75607 + Interview Questions in Secondary School in Science

1.	Where do the following functions occure...?(i) Production of an egg(ii) Fertilisation (iii) Implantation of zygote(iv) Production of sperm.
Answer» Answer: 1. It occurs in ovary 2. It occurs at the END of fallpian tube 3. It takes place in the uterus 4. Production of SPERM occurs in testicles

1.

Where do the following functions occure...?(i) Production of an egg(ii) Fertilisation (iii) Implantation of zygote(iv) Production of sperm.

Answer»

Answer:

1. It occurs in ovary

2. It occurs at the END of fallpian tube

3. It takes place in the uterus

4. Production of SPERM occurs in testicles

Discussion

2.	OjectPrepare a chart giving detailed information of carbon compounds in everyday use.Display it in the class and discuss.
Answer» Answer: Carbon is an element that is the found in abundance in the earth's crust. It is found in group 14 of the Periodic Table and has the atomic number 6. Carbon, which is non metallic in nature, is the 4th most abundant element in the universe and the 15th most abundant element in the Earth's crust. The name 'carbon' comes from the Latin word carbo which means coal or charcoal. Though carbon was present for centuries in the forms of soot and charcoal, it was only in 1772 that its real uses, which are still figured in carbon uses in everyday LIFE, were discovered by an eminent French scientist Rene Antoine Ferchault de Réaumur. The major source of carbon is the deposits of coal that are buried deep inside the earth. There are three allotropes of carbon, namely graphite, diamond and amorphous carbon. Carbon is a highly stable element that can combine with almost any other element to form a number of useful compounds. Organic chemistry, a branch of chemistry has been DEDICATED to the study of the properties and uses of carbon, as a chemical element and in its compound forms. Uses of Carbon in Everyday Life There are many limited uses of carbon in its elemental form. But once it combines with another element, it changes itself into a useful substance for numerous things. Carbon is used as a base for the ink in inkjet printers. Carbon, in the form of carbon DIOXIDE, is used in the manufacture of many fizzy and CARBONATED drinks. It is also used in fire extinguishers. Dry ice, which is the solid form of carbon dioxide, is used as a cooling agent. Freon, is used in cooling systems and devices like refrigerators and air conditioners. Carbon is also used to manufacture many heat resistant devices and tools and metal cutters. It is used as a decorative tool in many jewelry items. Carbon monoxide, extracted through metallurgical process, is used as a reducing agent to obtain many elements and compounds. Vegetal carbon, which is an amorphous form of carbon, is UTILIZED as a bleaching agent and a gas absorbent. Carbon is used in the rim of automobiles as a black fume pigment. Calcium carbide is used as a welding agent for cutting metals, in the preparation of acetylene and other organic compounds. Explanation: Please mark me as Brainliest.

2.

OjectPrepare a chart giving detailed information of carbon compounds in everyday use.Display it in the class and discuss.

Answer»

Answer:

Carbon is an element that is the found in abundance in the earth's crust. It is found in group 14 of the Periodic Table and has the atomic number 6. Carbon, which is non metallic in nature, is the 4th most abundant element in the universe and the 15th most abundant element in the Earth's crust. The name 'carbon' comes from the Latin word carbo which means coal or charcoal. Though carbon was present for centuries in the forms of soot and charcoal, it was only in 1772 that its real uses, which are still figured in carbon uses in everyday LIFE, were discovered by an eminent French scientist Rene Antoine Ferchault de Réaumur.

The major source of carbon is the deposits of coal that are buried deep inside the earth. There are three allotropes of carbon, namely graphite, diamond and amorphous carbon. Carbon is a highly stable element that can combine with almost any other element to form a number of useful compounds. Organic chemistry, a branch of chemistry has been DEDICATED to the study of the properties and uses of carbon, as a chemical element and in its compound forms.

Uses of Carbon in Everyday Life

There are many limited uses of carbon in its elemental form. But once it combines with another element, it changes itself into a useful substance for numerous things.

Carbon is used as a base for the ink in inkjet printers.

Carbon, in the form of carbon DIOXIDE, is used in the manufacture of many fizzy and CARBONATED drinks. It is also used in fire extinguishers.

Dry ice, which is the solid form of carbon dioxide, is used as a cooling agent.

Freon, is used in cooling systems and devices like refrigerators and air conditioners.

Carbon is also used to manufacture many heat resistant devices and tools and metal cutters.

It is used as a decorative tool in many jewelry items.

Carbon monoxide, extracted through metallurgical process, is used as a reducing agent to obtain many elements and compounds.

Vegetal carbon, which is an amorphous form of carbon, is UTILIZED as a bleaching agent and a gas absorbent.

Carbon is used in the rim of automobiles as a black fume pigment.

Calcium carbide is used as a welding agent for cutting metals, in the preparation of acetylene and other organic compounds.

Explanation:

Please mark me as Brainliest.

Discussion

3.	Which of the following is not the property of cardiac muscle tissue1. Autorhythmicity2. Excitability3. Fatigueability4. Contractility
Answer» ANSWER: DESCRIBE the STRUCTURE of cardiac muscle Identify and describe the components of the CONDUCTING system that distributes electrical impulses through the heart Compare the effect of ion movement on membrane potential of cardiac conductive and CONTRACTILE cells Relate characteristics of an electrocardiogram to events in the cardiac cycle Identify blocks that can interrupt the cardiac cycle

3.

Which of the following is not the property of cardiac muscle tissue1. Autorhythmicity2. Excitability3. Fatigueability4. Contractility

Answer»

ANSWER:

DESCRIBE the STRUCTURE of cardiac muscle

Identify and describe the components of the CONDUCTING system that distributes electrical impulses through the heart

Compare the effect of ion movement on membrane potential of cardiac conductive and CONTRACTILE cells

Relate characteristics of an electrocardiogram to events in the cardiac cycle

Identify blocks that can interrupt the cardiac cycle

Discussion

4.	2. दूर सम्मेलन किस प्रकार का संचार है?क. दूर देशों का सम्मेलनख. समान स्थान पर लोगों द्वारा किया गया सम्मेलनग. पारस्परिक क्रियात्मक समूह संचारघ. मित्रों का सम्मेलन
Answer» Answer: 1.) वीडियो कॉन्फ्रेंसिंग आधुनिक संचार तकनीक है, जिसके माध्यम से दो या इससे अधिक स्थानों से एक साथ ऑडियो-वीडियो माध्यम से कई लोग जुड़ सकते हैं। इसे वीडियो टेलीकॉन्फ्रेंस भी कहा जाता है। इसका प्रयोग खासकर किसी बैठक या सम्मेलन के लिए तब किया जाता है, जब कई लोग अलग-अलग स्थानों में बैठे हों। 4.) पारस्परिक संचार आम तौर पर कम संख्या में लोगों के बीच संचार को संदर्भित करता है। ऐसा संचार तीन प्रकार का होता है - मौखिक, लिखित और अशाब्दिक। (मैं) मौखिक संचार: मौखिक संचार में आमने-सामने की बातचीत, समूह चर्चा, टेलीफोन कॉल और अन्य परिस्थितियां शामिल होती हैं जिसमें प्रेषक संवाद करने के लिए बोले गए शब्द का उपयोग करता है।

4.

2. दूर सम्मेलन किस प्रकार का संचार है?क. दूर देशों का सम्मेलनख. समान स्थान पर लोगों द्वारा किया गया सम्मेलनग. पारस्परिक क्रियात्मक समूह संचारघ. मित्रों का सम्मेलन

Answer»

Answer:

1.) वीडियो कॉन्फ्रेंसिंग आधुनिक संचार तकनीक है, जिसके माध्यम से दो या इससे अधिक स्थानों से एक साथ ऑडियो-वीडियो माध्यम से कई लोग जुड़ सकते हैं। इसे वीडियो टेलीकॉन्फ्रेंस भी कहा जाता है। इसका प्रयोग खासकर किसी बैठक या सम्मेलन के लिए तब किया जाता है, जब कई लोग अलग-अलग स्थानों में बैठे हों।

4.) पारस्परिक संचार आम तौर पर कम संख्या में लोगों के बीच संचार को संदर्भित करता है। ऐसा संचार तीन प्रकार का होता है - मौखिक, लिखित और अशाब्दिक। (मैं) मौखिक संचार: मौखिक संचार में आमने-सामने की बातचीत, समूह चर्चा, टेलीफोन कॉल और अन्य परिस्थितियां शामिल होती हैं जिसमें प्रेषक संवाद करने के लिए बोले गए शब्द का उपयोग करता है।

Discussion

5.	Q23. What happens when a copper vessel is exposed to moist for long time? Write wordequation of the reaction.
Answer» $\red{\bigstar \large\underline{\boxed{\bf\pink{Answer:-}}}}$ COPPER forms a green deposit on its surface when exposed to air which is usually a MIXTURE of copper CARBONATE and copper hydroxide. The CHEMICAL reaction is 2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3

5.

Q23. What happens when a copper vessel is exposed to moist for long time? Write wordequation of the reaction.

Answer»

$\red{\bigstar \large\underline{\boxed{\bf\pink{Answer:-}}}}$

COPPER forms a green deposit on its surface when exposed to air which is usually a MIXTURE of copper CARBONATE and copper hydroxide.

The CHEMICAL reaction is

2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3

Discussion

6.	Herbivores are directly depends on ________.1️⃣ ecosystem2️⃣ carnivores3️⃣ autotropes (plants)4️⃣ omnivores
Answer» ${\huge {\red {\underline {\underline {\mathcal {♡AnSwEr♡⤵}}}}}}$ $\: \: \: \: \:$ $\: \: \: \:$ ${\mathbb{\colorbox {black} {\boxed{\boxed{\boxed{\boxed{\boxed{\colorbox {red}{\boxed{\boxed{\boxed{\boxed{\boxed{\colorbox {cyan} {Autotrophs}}}}}}}}}}}}}}}$

6.

Herbivores are directly depends on ________.1️⃣ ecosystem2️⃣ carnivores3️⃣ autotropes (plants)4️⃣ omnivores

Answer»

${\huge {\red {\underline {\underline {\mathcal {♡AnSwEr♡⤵}}}}}}$ $\: \: \: \: \:$

$\: \: \: \:$

${\mathbb{\colorbox {black} {\boxed{\boxed{\boxed{\boxed{\boxed{\colorbox {red}{\boxed{\boxed{\boxed{\boxed{\boxed{\colorbox {cyan} {Autotrophs}}}}}}}}}}}}}}}$

Discussion

7.	A)define one joule of work.b)write an expression for the work done when a force is acting an object in the direction of the displacement.c) write the conservation of momentum?derive an expression for it.answer these all question.
Answer» Answer: a) 1 J is the amount of work done by a force of 1 N on an object that displaces it through a DISTANCE of 1 m in the direction of the applied force. c) CONSERVATION of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant. . hope helps

7.

A)define one joule of work.b)write an expression for the work done when a force is acting an object in the direction of the displacement.c) write the conservation of momentum?derive an expression for it.answer these all question.

Answer»

Answer:

a) 1 J is the amount of work done by a force of 1 N on an object that displaces it through a DISTANCE of 1 m in the direction of the applied force.

c) CONSERVATION of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant. .

hope helps

Discussion

8.	1.what is team work?ak kuch bhi mat bol ab
Answer» ANSWER: $\huge{\textbf{\textsf{{\color{navy}{an}{\purple{sw}}{\pink{er}}{\color{pink}:)}}}}}$ EXPLANATION: chhod NA

8.

1.what is team work?ak kuch bhi mat bol ab

Answer»

ANSWER:

$\huge{\textbf{\textsf{{\color{navy}{an}{\purple{sw}}{\pink{er}}{\color{pink}:)}}}}}$

EXPLANATION:

chhod NA

Discussion

9.	7. निम्नलिखित कथन को सही करके लिखिए -गुरुत्वाकर्षण बल के कारण जड़ों की अधोमुखी गति को प्रकाशानुवर्तन कहते हैं।
Answer» कोई भी वस्तु ऊपर से गिरने पर सीधी पृथ्वी की ओर आती है। ऐसा प्रतीत होता है, मानो कोई अलक्ष्य और अज्ञात शक्ति उसे पृथ्वी की ओर खींच रही है। इटली के वैज्ञानिक, गैलिलीयो गैलिलीआई ने सर्वप्रथम इस तथ्य पर प्रकाश डाला था कि कोई भी पिंड जब ऊपर से गिरता है तब वह एक नियत त्वरण से पृथ्वी की ओर आता है। त्वरण का यह मान सभी वस्तुओं के लिए एक समान रहता है। अपने इस निष्कर्ष की पुष्टि उसने प्रयोगों और गणितीय विवेचनों द्वारा की है।

9.

7. निम्नलिखित कथन को सही करके लिखिए -गुरुत्वाकर्षण बल के कारण जड़ों की अधोमुखी गति को प्रकाशानुवर्तन कहते हैं।

Answer»

कोई भी वस्तु ऊपर से गिरने पर सीधी पृथ्वी की ओर आती है। ऐसा प्रतीत होता है, मानो कोई अलक्ष्य और अज्ञात शक्ति उसे पृथ्वी की ओर खींच रही है। इटली के वैज्ञानिक, गैलिलीयो गैलिलीआई ने सर्वप्रथम इस तथ्य पर प्रकाश डाला था कि कोई भी पिंड जब ऊपर से गिरता है तब वह एक नियत त्वरण से पृथ्वी की ओर आता है। त्वरण का यह मान सभी वस्तुओं के लिए एक समान रहता है। अपने इस निष्कर्ष की पुष्टि उसने प्रयोगों और गणितीय विवेचनों द्वारा की है।

Discussion

10.	My nowe type questionsExplain the respiratory tract in humans with thehelp of a suitable dimasam. with the vidieo
Answer» Answer: The organs that are involved in BREATHING. These INCLUDE the nose, throat, LARYNX, trachea, bronchi, and LUNGS.

10.

My nowe type questionsExplain the respiratory tract in humans with thehelp of a suitable dimasam. with the vidieo

Answer»

Answer:

The organs that are involved in BREATHING. These INCLUDE the nose, throat, LARYNX, trachea, bronchi, and LUNGS.

Discussion

11.	1. If you could use any source of energy for heating your food which one would you prefer?State one reason for your choice. ★Help me guys plz★ ✪ No spAming anSwer✪
Answer» Explanation: We would USE a MICROWAVE oven for heating the food as it heats it uniformly and CLEANLY WITHOUT loss in its nutritional value. This answer may be help you

11.

1. If you could use any source of energy for heating your food which one would you prefer?State one reason for your choice. ★Help me guys plz★ ✪ No spAming anSwer✪

Answer»

Explanation:

We would USE a MICROWAVE oven for heating the food as it heats it uniformly and CLEANLY WITHOUT loss in its nutritional value.

This answer may be help you

Discussion

12.	4) Calculate the critical velocity (V) of thesatellite to be located at 35780 km above thesurface of the earth.(G=6.6710 N.m /kgMEarth) = 610*4kg, ReBarts = 6.4 x 10 m)22and
Answer» Answer: sorry this is out of my RANGE EXPLANATION: because I am SCIENCE STUDENT

12.

4) Calculate the critical velocity (V) of thesatellite to be located at 35780 km above thesurface of the earth.(G=6.6710 N.m /kgMEarth) = 610*4kg, ReBarts = 6.4 x 10 m)22and

Answer»

Answer:

sorry this is out of my RANGE

EXPLANATION:

because I am SCIENCE STUDENT

Discussion

13.	प्रश्न : (a) या कृतीतून पदार्थाच्या कोणत्या गुणधर्माचा अभ्यास करता येईल?(b) तो गुणधर्म कमीत कमी शब्दांत सांगा.
Answer» your QUESTIONS is WRONG

Discussion

14.	Other than thermal power plant,which power plants use thermal en-ergy for power generation? In whatdifferent ways is the thermal energyobtained?
Answer» Answer: Answer: Other than THERMAL power plant, nuclear power plants, solar power plants use thermal energy for power GENERATION. Different ways of generating thermal energy are: Using fossil FUELS: By burning fossil fuels such as coal, PETROLEUM, the chemical energy stored in them is CONVERTED into thermal energy.

14.

Other than thermal power plant,which power plants use thermal en-ergy for power generation? In whatdifferent ways is the thermal energyobtained?

Answer»

Answer:

Answer: Other than THERMAL power plant, nuclear power plants, solar power plants use thermal energy for power GENERATION. Different ways of generating thermal energy are: Using fossil FUELS: By burning fossil fuels such as coal, PETROLEUM, the chemical energy stored in them is CONVERTED into thermal energy.

Discussion

15.	Fill in the banks by selecting the correct word from the bracket and complete thegiven paragraph.(evolaton first 400. Cultural, 200, human ancestry)Neanderthal man can be considered as the _________ example of wise-man: The Cro-Magon man evolved about 50 thousand years ago and afterwards, this______had been faster thanthe earlier.About 10 thousand years ago, wise-man started to practice the agriculture. It started tothe cattle-herds and established the cities. ________ development took place . Art of writinginvented about 5000 years ago and thus the history had been started. Modern sciences emerged about _______ years ago and industrial society was established about _______ year ago and now we have reached at this stage, and still we are searching the details of roots of _______
Answer» Answer: answer for blank... Explanation: blank 1) first blank 2) evolation blank 3) CULTURAL blank 4) blank 5) blank 6) Human ancestry So I have given you the answer but I am not sure so please CONFIRM with a teacher And I have left blank 4 and 5 since I don't remember how many years AGO was the Modern sciences EMERGED

15.

Fill in the banks by selecting the correct word from the bracket and complete thegiven paragraph.(evolaton first 400. Cultural, 200, human ancestry)Neanderthal man can be considered as the ___ example of wise-man: The Cro-Magon man evolved about 50 thousand years ago and afterwards, thishad been faster thanthe earlier.About 10 thousand years ago, wise-man started to practice the agriculture. It started tothe cattle-herds and established the cities. development took place . Art of writinginvented about 5000 years ago and thus the history had been started. Modern sciences emerged about _ years ago and industrial society was established about _ year ago and now we have reached at this stage, and still we are searching the details of roots of ___

Answer»

Answer:

answer for blank...

Explanation:

blank 1) first

blank 2) evolation

blank 3) CULTURAL

blank 4)

blank 5)

blank 6) Human ancestry

So I have given you the answer but I am not sure so please CONFIRM with a teacher

And I have left blank 4 and 5 since I don't remember how many years AGO was the Modern sciences EMERGED

Discussion

16.	2.Write the names of two plants and their parts useful as food.please tell me the right answer....
Answer» Answer: PARTS of PLANTS that we eat Plant Consumable parts of the Plant Carrot, reddish, BEETROOT, etc. Root Spinach, cabbage, lettuce, etc. Leaves Cauliflower, Broccoli, sunflower etc. Flower Apple, ORANGE, banana, etc. FRUITS

16.

2.Write the names of two plants and their parts useful as food.please tell me the right answer....

Answer»

Answer:

PARTS of PLANTS that we eat

Plant Consumable parts of the Plant

Carrot, reddish, BEETROOT, etc. Root

Spinach, cabbage, lettuce, etc. Leaves

Cauliflower, Broccoli, sunflower etc. Flower

Apple, ORANGE, banana, etc. FRUITS

Discussion

17.	A) Choose the correct alternative from the given options.1) The value of'g'is highest at thea) equatorb) polesc) latituded) longitude
Answer» ANSWER: The answer is this QUESTION is a) EQUATOR

17.

A) Choose the correct alternative from the given options.1) The value of'g'is highest at thea) equatorb) polesc) latituded) longitude

Answer»

ANSWER:

The answer is this QUESTION is a) EQUATOR

Discussion

18.	2) State whether the following reactions areexothermic or endothermic.i) KNO36+H,00) + Heat —— KNO3(aq)
Answer» Answer: exothermic EXPLANATION: hope it helps you please mark as BRAINLIEST and THANK you

18.

2) State whether the following reactions areexothermic or endothermic.i) KNO36+H,00) + Heat —— KNO3(aq)

Answer»

Answer:

exothermic

EXPLANATION:

hope it helps you please mark as BRAINLIEST and THANK you

Discussion

19.	Please give answerDjsjbd
Answer» Answer: d) 10 m/s Explanation: The Velocity-Time Graph SHOWS the velocity at DIFFERENT time intervals. The car will BEGIN its JOURNEY at t = 0 s and over 0 LIES 10 m/s. So, initial speed/velocity of the car will be 10 m/s.

19.

Please give answerDjsjbd

Answer»

Answer:

d) 10 m/s

Explanation:

The Velocity-Time Graph SHOWS the velocity at DIFFERENT time intervals. The car will BEGIN its JOURNEY at t = 0 s and over 0 LIES 10 m/s.

So, initial speed/velocity of the car will be 10 m/s.

Discussion

20.	एखाद्या ठिकाणी भूकंप झाल्यावर त्याची नोंद ________ या यंत्राद्वारे घेतली जाईल.1️⃣ स्ट्रेनमीटर2️⃣ रिश्टर स्केल3️⃣ सेस्मोमीटर4️⃣ टील्ट मीटरplease answer fast now online homework
Answer» Answer: 2 HOPE it is HELP FULL to you

20.

एखाद्या ठिकाणी भूकंप झाल्यावर त्याची नोंद ________ या यंत्राद्वारे घेतली जाईल.1️⃣ स्ट्रेनमीटर2️⃣ रिश्टर स्केल3️⃣ सेस्मोमीटर4️⃣ टील्ट मीटरplease answer fast now online homework

Answer»

Answer:

2 HOPE it is HELP FULL to you

Discussion

21.	Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gasᴘᴛᴀ ɴᴏɪ ʟᴇ
Answer» Room mai chalo memories banate hai xD

Discussion

22.	2H,S+SO, +35+ +HOIn above reaction, which reactant is oxidized and reduced? Write theof reaction
Answer» ANSWER: In this EQUATION H2S is GETTING OXIDIZED

22.

2H,S+SO, +35+ +HOIn above reaction, which reactant is oxidized and reduced? Write theof reaction

Answer»

ANSWER:

In this EQUATION H2S is GETTING OXIDIZED

Discussion

23.	The major demerit of Mendeleev'speriodic table is that the elementcould not be properlypositioned.1 Helium2 Hydrogen3 Alluminium4 Chlorine8:14 pm
Answer» ANSWER: CHLORINE are CORRECT OPTION

23.

The major demerit of Mendeleev'speriodic table is that the elementcould not be properlypositioned.1 Helium2 Hydrogen3 Alluminium4 Chlorine8:14 pm

Answer»

ANSWER:

CHLORINE are CORRECT OPTION

Discussion

24.	TEXT BOOK EXERCISE1. Which separation techniques will you apply forthe separation of the following? Imp
Answer» ANSWER: Separation TECHNIQUES APPLIED for the separation of : ??????? CORRECT the QUESTION

24.

TEXT BOOK EXERCISE1. Which separation techniques will you apply forthe separation of the following? Imp

Answer»

ANSWER:

Separation TECHNIQUES APPLIED for the separation of :

???????

CORRECT the QUESTION

Discussion

25.	3 8:13 pmIn Dobereiner's triad, 23 is the meanof atomic masses of Li and K. This isthe atomic mass of1 Na2 Ca3 Br8:13 pm
Answer» ANSWER: NA the answer is SODIUM (Na)

25.

3 8:13 pmIn Dobereiner's triad, 23 is the meanof atomic masses of Li and K. This isthe atomic mass of1 Na2 Ca3 Br8:13 pm

Answer»

ANSWER:

NA

the answer is SODIUM (Na)

Discussion

26.	Rohini tested the solubility of five substances at different temperatures. She noted the amount of each substance dissolved in 100g of water to form a saturated solution at a particular temperature and reported the following data:SubstanceABСDETemperature35°C21.425.07.940.662.020°C18,620.08.236.232.050°C23.835.07.645.4106.0(a) Which substance is least soluble in water at 35°C?(b) Which substance is most soluble in water at 20°C?(c) What mass of B would be needed to make a saturated solution in(d)(e)200g of water at 20°C? What amount of E would separate out when 106.0g of its solution at 50°C is cooled to 20°C?Do all solutions show the same effect of temperature on the solubility of the salt?
Answer» Explanation: ANSWER (a) At 313 K 62 g of potassium nitrate dissolved in 100 g of water. So to produce a saturated solution of potassium nitrate in 50 g of water we need 100 62 ×50=31 g of potassium nitrate. (b)Some soluble potassium CHLORIDE will separate out in the form of CRYSTAL at room TEMPERATURE because the solubility of potassium chloride will DECREASE. (c) (i) Solubility of Potassium nitrate at 293 K is 32 g. (ii) Solubility of sodium chloride at 293 K is 36 g. (iii) Solubility of Potassium chloride at 293 K is 35 g. (iv) Solubility of Ammonium chloride at 293 K is 37 g. The solubility of Ammonium chloride is highest at this temperature. (d)The solubility of salt increases with the increase in temperature.

26.

Rohini tested the solubility of five substances at different temperatures. She noted the amount of each substance dissolved in 100g of water to form a saturated solution at a particular temperature and reported the following data:SubstanceABСDETemperature35°C21.425.07.940.662.020°C18,620.08.236.232.050°C23.835.07.645.4106.0(a) Which substance is least soluble in water at 35°C?(b) Which substance is most soluble in water at 20°C?(c) What mass of B would be needed to make a saturated solution in(d)(e)200g of water at 20°C? What amount of E would separate out when 106.0g of its solution at 50°C is cooled to 20°C?Do all solutions show the same effect of temperature on the solubility of the salt?

Answer»

Explanation:

ANSWER

(a) At 313 K 62 g of potassium nitrate dissolved in 100 g of water. So to produce a saturated solution of potassium nitrate in 50 g of water we need

100

62

×50=31 g of potassium nitrate.

(b)Some soluble potassium CHLORIDE will separate out in the form of CRYSTAL at room TEMPERATURE because the solubility of potassium chloride will DECREASE.

(c)

(i) Solubility of Potassium nitrate at 293 K is 32 g.

(ii) Solubility of sodium chloride at 293 K is 36 g.

(iii) Solubility of Potassium chloride at 293 K is 35 g.

(iv) Solubility of Ammonium chloride at 293 K is 37 g.

The solubility of Ammonium chloride is highest at this temperature.

(d)The solubility of salt increases with the increase in temperature.

Discussion

27.	The images of the cinema screen are______a.) real image b.) virtual image c.)regular imaged.)lateral image
Answer» ANSWER: B VIRTUAL IMAGE is your answer

27.

The images of the cinema screen are______a.) real image b.) virtual image c.)regular imaged.)lateral image

Answer»

ANSWER:

B VIRTUAL IMAGE

is your answer

Discussion

28.	Visit a furniture industry near your house. Look at the different kindsof simple machines used over there. Observe those machines yourself aswell as ask the carpenters and fill in the given table.
Answer» ANSWER: I will be in the same to you as soon as possible and I have to be ABLE EXPLANATION: mummy ki practical book 6p

28.

Visit a furniture industry near your house. Look at the different kindsof simple machines used over there. Observe those machines yourself aswell as ask the carpenters and fill in the given table.

Answer»

ANSWER:

I will be in the same to you as soon as possible and I have to be ABLE

EXPLANATION:

mummy ki practical book 6p

Discussion

29.	10. The increasing order of the atomic radii of the following elements is(A) C(B)O(C) F (D) CI(E) Br(a) (A) < (B) < (C) < (D) < E)b) (c) < (B) < (A) < (D)
Answer» Answer: A is the answer Explanation: This is because when we move LEFT to RIGHT in a periodic table we see trend of radii changes so we take electronegativity and Valence shell DISTANCE or screening effect in CONSIDERATION . According to that carbon is most electronegative then O then F , and for Cl and Br screening effect concept will apply.

29.

10. The increasing order of the atomic radii of the following elements is(A) C(B)O(C) F (D) CI(E) Br(a) (A) < (B) < (C) < (D) < E)b) (c) < (B) < (A) < (D)

Answer»

Answer:

A is the answer

Explanation:

This is because when we move LEFT to RIGHT in a periodic table we see trend of radii changes so we take electronegativity and Valence shell DISTANCE or screening effect in CONSIDERATION . According to that carbon is most electronegative then O then F , and for Cl and Br screening effect concept will apply.

Discussion

30.	नैसर्गिक व बाह्य घटकांच्या मिश्रणाने पाणी जेव्हा अस्वच्छ, विषारी होते, तेव्हा त्यातील _______ प्रमाण घटते.1️⃣ नायट्रोजन2️⃣ ऑक्सिजन3️⃣ हायड्रोजन4️⃣ कार्बन डायऑक्साईड
Answer» ANSWER: *कार्बन डायऑक्साईड* प्रमाण घटते.*

30.

नैसर्गिक व बाह्य घटकांच्या मिश्रणाने पाणी जेव्हा अस्वच्छ, विषारी होते, तेव्हा त्यातील _______ प्रमाण घटते.1️⃣ नायट्रोजन2️⃣ ऑक्सिजन3️⃣ हायड्रोजन4️⃣ कार्बन डायऑक्साईड

Answer»

ANSWER:

कार्बन डायऑक्साईड प्रमाण घटते.*

Discussion

31.	ਇਕ ਕੁੜੀ ਜੋ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਹੱਸਦੀ ਤਾ ਉਹ ਸਾਰਿਆਂ ਨਾਲ ਆਪਰ ਖੁਸ਼ ਕਿਸੇ ਨਾਲ ਹੀ ਰਹਿੰਦੀ ਆਖੁਸ਼ੀਆ ਚਾਰੇ ਪਾਸੇ ਵੰਡ ਦੀ ਆਪਰ ਕਿਸੇ ਨੂੰ ਕਿ ਪਤਾ ਊ ਕਿੰਨੀ ਦੁਖੀ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੀ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਆਪਣਾ ਮੂੰਹ ਸਿਰਹਾਣੇ ਚ ਦੇ ਕੇ ਪੈਂਦੀ ਆਫਿਰ ਵੀ ਸਬਬ ਕੁਝ ਠੀਕ ਆ ਇਹੀ ਕੇਂਦੀ ਆਆਪਣਾ ਦਰਦ ਇਹ ਲਕੋਂਦੀ ਰਹਿੰਦੀ ਆਤੇ ਸਾਰੀ ਰਾਤ ਊ ਰੋਂਦੀ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਮੈਨੂੰ ਪਰਵਾਹ ਨਹੀਂ ਬਸ ਇਹੀ ਕੈਂਦੀ ਆਤੇ ਦੁਨੀਆ ਓਹਨੂੰ ਪੱਥਰ ਦਿਲ ਕੇਂਦੀ ਆਕੋਈ ਕ਼ੀ ਜਾਣੇ ਊ ਚੂਰ ਹੋਈ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ ਤਾਹੀਓਂ ਹੁਣ ਊ ਚੁੱਪ ਜੀ ਹੋਈ ਰਹਿੰਦੀ ਆ❤️#sadsoul#
Answer» ANSWER: ਇਕ ਕੁੜੀ ਜੋ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ ਹੱਸਦੀ ਤਾ ਉਹ ਸਾਰਿਆਂ ਨਾਲ ਆ ਪਰ ਖੁਸ਼ ਕਿਸੇ ਨਾਲ ਹੀ ਰਹਿੰਦੀ ਆ ਖੁਸ਼ੀਆ ਚਾਰੇ ਪਾਸੇ ਵੰਡ ਦੀ ਆ ਪਰ ਕਿਸੇ ਨੂੰ ਕਿ ਪਤਾ ਊ ਕਿੰਨੀ ਦੁਖੀ ਰਹਿੰਦੀ ਆ ਇਕ ਕੁੜੀ ਜੀ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ ਆਪਣਾ ਮੂੰਹ ਸਿਰਹਾਣੇ ਚ ਦੇ ਕੇ ਪੈਂਦੀ ਆ ਫਿਰ ਵੀ ਸਬਬ ਕੁਝ ਠੀਕ ਆ ਇਹੀ ਕੇਂਦੀ ਆ ਆਪਣਾ ਦਰਦ ਇਹ ਲਕੋਂਦੀ ਰਹਿੰਦੀ ਆ ਤੇ ਸਾਰੀ ਰਾਤ ਊ ਰੋਂਦੀ ਰਹਿੰਦੀ ਆ ਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ ਮੈਨੂੰ ਪਰਵਾਹ ਨਹੀਂ ਬਸ ਇਹੀ ਕੈਂਦੀ ਆ

31.

ਇਕ ਕੁੜੀ ਜੋ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਹੱਸਦੀ ਤਾ ਉਹ ਸਾਰਿਆਂ ਨਾਲ ਆਪਰ ਖੁਸ਼ ਕਿਸੇ ਨਾਲ ਹੀ ਰਹਿੰਦੀ ਆਖੁਸ਼ੀਆ ਚਾਰੇ ਪਾਸੇ ਵੰਡ ਦੀ ਆਪਰ ਕਿਸੇ ਨੂੰ ਕਿ ਪਤਾ ਊ ਕਿੰਨੀ ਦੁਖੀ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੀ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਆਪਣਾ ਮੂੰਹ ਸਿਰਹਾਣੇ ਚ ਦੇ ਕੇ ਪੈਂਦੀ ਆਫਿਰ ਵੀ ਸਬਬ ਕੁਝ ਠੀਕ ਆ ਇਹੀ ਕੇਂਦੀ ਆਆਪਣਾ ਦਰਦ ਇਹ ਲਕੋਂਦੀ ਰਹਿੰਦੀ ਆਤੇ ਸਾਰੀ ਰਾਤ ਊ ਰੋਂਦੀ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆਮੈਨੂੰ ਪਰਵਾਹ ਨਹੀਂ ਬਸ ਇਹੀ ਕੈਂਦੀ ਆਤੇ ਦੁਨੀਆ ਓਹਨੂੰ ਪੱਥਰ ਦਿਲ ਕੇਂਦੀ ਆਕੋਈ ਕ਼ੀ ਜਾਣੇ ਊ ਚੂਰ ਹੋਈ ਰਹਿੰਦੀ ਆਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ ਤਾਹੀਓਂ ਹੁਣ ਊ ਚੁੱਪ ਜੀ ਹੋਈ ਰਹਿੰਦੀ ਆ❤️#sadsoul#

Answer»

ANSWER:

ਇਕ ਕੁੜੀ ਜੋ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ

ਹੱਸਦੀ ਤਾ ਉਹ ਸਾਰਿਆਂ ਨਾਲ ਆ

ਪਰ ਖੁਸ਼ ਕਿਸੇ ਨਾਲ ਹੀ ਰਹਿੰਦੀ ਆ

ਖੁਸ਼ੀਆ ਚਾਰੇ ਪਾਸੇ ਵੰਡ ਦੀ ਆ

ਪਰ ਕਿਸੇ ਨੂੰ ਕਿ ਪਤਾ ਊ ਕਿੰਨੀ ਦੁਖੀ ਰਹਿੰਦੀ ਆ

ਇਕ ਕੁੜੀ ਜੀ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ

ਆਪਣਾ ਮੂੰਹ ਸਿਰਹਾਣੇ ਚ ਦੇ ਕੇ ਪੈਂਦੀ ਆ

ਫਿਰ ਵੀ ਸਬਬ ਕੁਝ ਠੀਕ ਆ ਇਹੀ ਕੇਂਦੀ ਆ

ਆਪਣਾ ਦਰਦ ਇਹ ਲਕੋਂਦੀ ਰਹਿੰਦੀ ਆ

ਤੇ ਸਾਰੀ ਰਾਤ ਊ ਰੋਂਦੀ ਰਹਿੰਦੀ ਆ

ਇਕ ਕੁੜੀ ਜੌ ਮੇਰੇ ਅੰਦਰ ਰਹਿੰਦੀ ਆ

ਮੈਨੂੰ ਪਰਵਾਹ ਨਹੀਂ ਬਸ ਇਹੀ ਕੈਂਦੀ ਆ

Discussion

32.	Conduct a survey in your school to investigate various environllellrelated activities that have been undertaken. The class can divideitself into two groups, with each group looking at a different area.For example, one group can find out whether there is anenvironment club in the school. What are its objectives ? What isits calendar of events? How can you become a member?ib, you even think of starting
Answer» EXPLANATION: . মান্নান মিঞা কিছু টাকা ধার করার 6 বছর পর দেখলেন দেয় সরল সুদের পরিমাণ আসলের 3/8 অংশ হয়ে গেছে। বার্ষিক শতকরা সরল সুদের হার কত ছিল নির্ণয় করি।

32.

Conduct a survey in your school to investigate various environllellrelated activities that have been undertaken. The class can divideitself into two groups, with each group looking at a different area.For example, one group can find out whether there is anenvironment club in the school. What are its objectives ? What isits calendar of events? How can you become a member?ib, you even think of starting

Answer»

EXPLANATION:

.

মান্নান মিঞা কিছু টাকা ধার করার 6 বছর পর দেখলেন দেয় সরল সুদের পরিমাণ আসলের 3/8 অংশ

হয়ে গেছে। বার্ষিক শতকরা সরল সুদের হার কত ছিল নির্ণয় করি।

Discussion

33.	At what temperature is the root mean square speed of an atom in anargon gas cylinder equal to the rms speed of a helium gas atom at-20°C ?(atomic mass of Ar=39.9u,He=4.0u)
Answer» Answer: SOLUTION : Let C and C' be the r.m.s. Velocity of argon and a helium gas atoms at TEMPERATURE TK and T'K respectively. Since, C=C′,∴,√3RT39.9=√3R×2534orT Explanation: this is your answer PLEASE mark me brainlist

33.

At what temperature is the root mean square speed of an atom in anargon gas cylinder equal to the rms speed of a helium gas atom at-20°C ?(atomic mass of Ar=39.9u,He=4.0u)

Answer»

Answer:

SOLUTION : Let C and C' be the r.m.s. Velocity of argon and a helium gas atoms at TEMPERATURE TK and T'K respectively. Since, C=C′,∴,√3RT39.9=√3R×2534orT

Explanation:

this is your answer

PLEASE mark me brainlist

Discussion

34.	Name one vehicle that usea)multi plate clutch b)friction clutch c)semi centrifugal clutch
Answer» Answer: HEAVY meachenearies are used in multi PLATE CLUTCH

34.

Name one vehicle that usea)multi plate clutch b)friction clutch c)semi centrifugal clutch

Answer»

Answer:

HEAVY meachenearies are used in multi PLATE CLUTCH

Discussion

35.	Give me right answer urgentthe process by which water converts into water vapour is called________a.) evaporation b.)transpirationc.) condensation d.)precipiation
Answer» Answer: evaporation Explanation: I HOPE this is helpful to you PLEASE MARK me brainleast please

35.

Give me right answer urgentthe process by which water converts into water vapour is called________a.) evaporation b.)transpirationc.) condensation d.)precipiation

Answer»

Answer:

evaporation

Explanation:

I HOPE this is helpful to you

PLEASE MARK me brainleast please

Discussion

36.	Two students Sam and Rohit were performing experiments in the science lab.Sam mixed 10.6 g of sodium carbonate in a conical flask with 12 g of hydrochloric acid in an ignition tube. He took care that the solutions did not mix with each other. He then put a cork on the conical flask and weighed the flask with the ignition tube and its contents. After weighing the flask for the first time Sam tilted it and allowed the solutions to mix and react. He then weighed the conical flask again. Sam found that the mass of the flask with its contents both before and after the experiment was the same.Rohit mixed 10.6 g of sodium carbonate in a conical flask with 12 g of Hydrochloric acid in ignition tube. He took care so that the solutions did not mix with each other. He weighed the flask with the ignition tube and its contents. He then tilted the conical flask to allow the solutions to mix and react. After the experiment, Rohit again weighed the conical flask. Rohit found that the mass of the flask with its contents both before and after the experiment was the not the same.() State the law which was being tested in the experiment.(ii)Why did Rohit get a difference in the mass?
Answer» Answer: (i.) Law of conservation of MASS. Explanation: According to the law of conservation of mass, the mass of the products in a chemical REACTION must be equal to the mass of the REACTANTS. (ii.) Rohit didn't put a cork on the the conical flask, due to which some of the CONTENTS in the flask MAY have fallen out of it on tilting. Therefore, the mass of the flask may have reduced from when it was observed the previous time.

36.

Two students Sam and Rohit were performing experiments in the science lab.Sam mixed 10.6 g of sodium carbonate in a conical flask with 12 g of hydrochloric acid in an ignition tube. He took care that the solutions did not mix with each other. He then put a cork on the conical flask and weighed the flask with the ignition tube and its contents. After weighing the flask for the first time Sam tilted it and allowed the solutions to mix and react. He then weighed the conical flask again. Sam found that the mass of the flask with its contents both before and after the experiment was the same.Rohit mixed 10.6 g of sodium carbonate in a conical flask with 12 g of Hydrochloric acid in ignition tube. He took care so that the solutions did not mix with each other. He weighed the flask with the ignition tube and its contents. He then tilted the conical flask to allow the solutions to mix and react. After the experiment, Rohit again weighed the conical flask. Rohit found that the mass of the flask with its contents both before and after the experiment was the not the same.() State the law which was being tested in the experiment.(ii)Why did Rohit get a difference in the mass?

Answer»

Answer:

(i.) Law of conservation of MASS.

Explanation: According to the law of conservation of mass, the mass of the products in a chemical REACTION must be equal to the mass of the REACTANTS.

(ii.) Rohit didn't put a cork on the the conical flask, due to which some of the CONTENTS in the flask MAY have fallen out of it on tilting. Therefore, the mass of the flask may have reduced from when it was observed the previous time.

Discussion

37.	Two identical resistors are first connected series and then in parallel . Find the ratio equivalent resistance in 2 cases
Answer» EXPLANATION: HOPE it will HELP you ❤️ Have a NICE DAY

37.

Two identical resistors are first connected series and then in parallel . Find the ratio equivalent resistance in 2 cases

Answer»

EXPLANATION:

HOPE it will HELP you ❤️

Have a NICE DAY

Discussion

38.	Hy cantour elbows bend backwards?hy does a blacksmith use heat to make vanous tools in his business?irement kept in the open gets soaked in rain What will be its con
Answer» Answer: 777777777to was 77feet 7AM 7

38.

Hy cantour elbows bend backwards?hy does a blacksmith use heat to make vanous tools in his business?irement kept in the open gets soaked in rain What will be its con

Answer»

Answer:

777777777to was 77feet 7AM 7

Discussion

39.	Q1 - Select correct option:1. The structural formula of formic acid isA. H-COOHC. CH3-COOHB. CH3-CH2-CH2-COOHD. CH3-CH2-COOH
Answer» ANSWER: FORMULA of FORMIC ACID is CH2O2

39.

Q1 - Select correct option:1. The structural formula of formic acid isA. H-COOHC. CH3-COOHB. CH3-CH2-CH2-COOHD. CH3-CH2-COOH

Answer»

ANSWER:

FORMULA of FORMIC ACID is CH2O2

Discussion

40.	34. "Global warming' is on the rise due to anincreasing concentration of(a) Argon(b) NO3(c) SO2(d) CO2
Answer» Answer: SO2 Explanation: GLOBAL WARMING is rise DUE to an INCREASE in SO2 SO2- sulphur dioxide

40.

34. "Global warming' is on the rise due to anincreasing concentration of(a) Argon(b) NO3(c) SO2(d) CO2

Answer»

Answer:

SO2

Explanation:

GLOBAL WARMING is rise DUE to an INCREASE in SO2

SO2- sulphur dioxide

Discussion

41.	Keywords in the long tail were characterized by the following except _______.a. Relevant to the pageb. Lesser with regard to competitionc. Limited to the number of searchesd. Driving greater conversion
Answer» ANSWER: a.relevent to the PAGE

41.

Keywords in the long tail were characterized by the following except _______.a. Relevant to the pageb. Lesser with regard to competitionc. Limited to the number of searchesd. Driving greater conversion

Answer»

ANSWER:

a.relevent to the PAGE

Discussion

42.	The process by which water converts into water vapour is calleda. Evaporationb. Transpirationc. Condensationd. Precipitation
Answer» ANSWER: a. EVAPORATION is the answer

42.

The process by which water converts into water vapour is calleda. Evaporationb. Transpirationc. Condensationd. Precipitation

Answer»

ANSWER:

a. EVAPORATION is the answer

Discussion

43.	31.Which of the following vertebrates hasthe longest life span on Earth ?(a) Elephant(b) Giant Tortoise(c) Snake(d) None of these
Answer» ANSWER: *(a)ELEPHANT* Is The CORRECT Answer**

43.

31.Which of the following vertebrates hasthe longest life span on Earth ?(a) Elephant(b) Giant Tortoise(c) Snake(d) None of these

Answer»

ANSWER:

(a)ELEPHANT Is The CORRECT Answer

Discussion

44.	The specific heat of substance depends upon ?︎︎︎︎︎︎︎︎︎︎︎︎Today's look :) #B- Day boy ❥︎
Answer» SPECIFIC HEAT capacity (or simply, the specific heat), which is the heat capacity PER unit MASS of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance. ❤️today's LOOK ☺️❤️ love u akka

44.

The specific heat of substance depends upon ?︎︎︎︎︎︎︎︎︎︎︎︎Today's look :) #B- Day boy ❥︎

Answer»

SPECIFIC HEAT capacity (or simply, the specific heat), which is the heat capacity PER unit MASS of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.

❤️today's LOOK ☺️❤️

love u akka

Discussion

45.	DjBinary fissioninj Multiple fissionBinary fission-During binary fision, the parent cell dividentwounter thedivides and form two nocle. Then the cytoplasm divides and foodParamecium and LeishmaniaBINARY FISSIONINAMOEBABINARY FISSION INLEISHMANIA
Answer» ANSWER: WRITE the QUESTIONS PROPERLY

45.

DjBinary fissioninj Multiple fissionBinary fission-During binary fision, the parent cell dividentwounter thedivides and form two nocle. Then the cytoplasm divides and foodParamecium and LeishmaniaBINARY FISSIONINAMOEBABINARY FISSION INLEISHMANIA

Answer»

ANSWER:

WRITE the QUESTIONS PROPERLY

Discussion

46.	Sometimes, we have to use groundwater for our needs and cannot avoid it. However, in some areas, wastewater is cleaned and sent back to groundwater. Will this affect the groundwater?1 No, it will have no effect on the groundwater.2 Yes, it will make the groundwater unusable.3 Yes, it will increase the availability of groundwater.4 It depends on how much groundwater is already present in that region.
Answer» ANSWER: shayad 4th hai iska JAWAB

46.

Sometimes, we have to use groundwater for our needs and cannot avoid it. However, in some areas, wastewater is cleaned and sent back to groundwater. Will this affect the groundwater?1 No, it will have no effect on the groundwater.2 Yes, it will make the groundwater unusable.3 Yes, it will increase the availability of groundwater.4 It depends on how much groundwater is already present in that region.

Answer»

ANSWER:

shayad 4th hai iska JAWAB

Discussion

47.	4cm high object is placed at a distance of 12cm from a converging lens of focal length of8cm. Determine the position, size and type of the image.
Answer» Required Answer :- Height of object = 4cm distance from MIRROR (u) = 12cm Focal length = 8cm _____________________________ To Find :- The POSITION size and type of image formed. ___________________________________________ $\frac{1}{f} = \frac{1}{u} + \frac{1}{v} \\ \\ \frac{1}{8} = \frac{1}{12} + \frac{1}{v} \\ \\ \frac{1}{v} = \frac{1}{ - 24} - \frac{1}{ - 12} \\ \\ v = 24cm$ $m = - \frac{v}{u} \\ \\ m = - \frac{ - 24}{ - 3} \\ \\ m = 8cm$ Hence Image formed is virtual and ERECT and position is behind the mirror.

47.

4cm high object is placed at a distance of 12cm from a converging lens of focal length of8cm. Determine the position, size and type of the image.

Answer»

Required Answer :-

Height of object = 4cm

distance from MIRROR (u) = 12cm

Focal length = 8cm

_____________________________

To Find :-

The POSITION size and type of image formed.

___________________________________________

$\frac{1}{f} = \frac{1}{u} + \frac{1}{v} \\ \\ \frac{1}{8} = \frac{1}{12} + \frac{1}{v} \\ \\ \frac{1}{v} = \frac{1}{ - 24} - \frac{1}{ - 12} \\ \\ v = 24cm$

$m = - \frac{v}{u} \\ \\ m = - \frac{ - 24}{ - 3} \\ \\ m = 8cm$

Hence Image formed is virtual and ERECT and position is behind the mirror.

Discussion

48.	For which of the following do animals depend on plants?(i) shelter(ii) food(iii) seed dispersal(iv) transfer of pollen1 only (ii)2 only (i) and (ii)3 only (i), (ii) and (iii)4 all - (i), (ii), (iii) and (iv)
Answer» ANSWER: (only II) FOOD *Hope* it HELPS you ...

48.

For which of the following do animals depend on plants?(i) shelter(ii) food(iii) seed dispersal(iv) transfer of pollen1 only (ii)2 only (i) and (ii)3 only (i), (ii) and (iii)4 all - (i), (ii), (iii) and (iv)

Answer»

ANSWER:

(only II) FOOD

Hope it HELPS you ...

Discussion

49.	Which of the following can be caused by deforestation?P. Some animals will become extinct.Q. The existing petroleum reserves will decrease.R. The temperature of the Earth will increase.S. The amount of certain atmospheric gases will be affected.1 only P2 only P and S3 only P, R and S4 all - P, Q, R and S
Answer» <P>Answer: 4 All - P, Q, R and S *Hope* it HELPS you

49.

Which of the following can be caused by deforestation?P. Some animals will become extinct.Q. The existing petroleum reserves will decrease.R. The temperature of the Earth will increase.S. The amount of certain atmospheric gases will be affected.1 only P2 only P and S3 only P, R and S4 all - P, Q, R and S

Answer»

<P>Answer:

4 All - P, Q, R and S

Hope it HELPS you

Discussion

50.	15. Assertion : The outer and inner lining of animal system is made up of epithelial tissue.Reason: Epithelial tissue may be simple or stratified.ORAssertion : Desert plants have thick waxy cuticle.Reason: Thick waxy coating over epidermal layer reduces transpiration.
Answer» Answer: In first QUESTION, both assertion and reason are true but reason is not the correct explanation of assertion . In second question, assertion is wrong and reason is true Explanation: Ans1: The reason is not the correct explanation because not EVERY tissue in human BODY is lined by simple and stratified epithelial tissues only other complex epithelial tissues ALSO line them. Ans2: This is because desert plants have modified leaves as thorns and hence have no cuticle.

50.

15. Assertion : The outer and inner lining of animal system is made up of epithelial tissue.Reason: Epithelial tissue may be simple or stratified.ORAssertion : Desert plants have thick waxy cuticle.Reason: Thick waxy coating over epidermal layer reduces transpiration.

Answer»

Answer:

In first QUESTION, both assertion and reason are true but reason is not the correct explanation of assertion .

In second question, assertion is wrong and reason is true

Explanation:

Ans1: The reason is not the correct explanation because not EVERY tissue in human BODY is lined by simple and stratified epithelial tissues only other complex epithelial tissues ALSO line them.

Ans2: This is because desert plants have modified leaves as thorns and hence have no cuticle.

Discussion

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The specific heat of substance depends upon ?︎︎︎︎︎︎︎︎︎︎︎︎Today's look :) #B- Day boy ❥︎​

SPECIFIC HEAT capacity (or simply, the specific heat), which is the heat capacity PER unit MASS of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.

❤️today's LOOK ☺️❤️

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Required Answer :-

_____________________________

To Find :-

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OjectPrepare a chart giving detailed information of carbon compounds in everyday use.Display it in the class and discuss.

Which of the following is not the property of cardiac muscle tissue1. Autorhythmicity2. Excitability3. Fatigueability4. Contractility

Q23. What happens when a copper vessel is exposed to moist for long time? Write wordequation of the reaction.

Herbivores are directly depends on ________.1️⃣ ecosystem2️⃣ carnivores3️⃣ autotropes (plants)4️⃣ omnivores

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7. निम्नलिखित कथन को सही करके लिखिए -गुरुत्वाकर्षण बल के कारण जड़ों की अधोमुखी गति को प्रकाशानुवर्तन कहते हैं।

My nowe type questionsExplain the respiratory tract in humans with thehelp of a suitable dimasam. with the vidieo

1. If you could use any source of energy for heating your food which one would you prefer?State one reason for your choice. ★Help me guys plz★ ✪ No spAming anSwer✪

4) Calculate the critical velocity (V) of thesatellite to be located at 35780 km above thesurface of the earth.(G=6.6710 N.m /kgMEarth) = 610*4kg, ReBarts = 6.4 x 10 m)22and

प्रश्न : (a) या कृतीतून पदार्थाच्या कोणत्या गुणधर्माचा अभ्यास करता येईल?(b) तो गुणधर्म कमीत कमी शब्दांत सांगा.

Other than thermal power plant,which power plants use thermal en-ergy for power generation? In whatdifferent ways is the thermal energyobtained?

2.Write the names of two plants and their parts useful as food.please tell me the right answer....

A) Choose the correct alternative from the given options.1) The value of'g'is highest at thea) equatorb) polesc) latituded) longitude

2) State whether the following reactions areexothermic or endothermic.i) KNO36+H,00) + Heat —— KNO3(aq)

Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gasᴘᴛᴀ ɴᴏɪ ʟᴇ

2H,S+SO, +35+ +HOIn above reaction, which reactant is oxidized and reduced? Write theof reaction

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TEXT BOOK EXERCISE1. Which separation techniques will you apply forthe separation of the following? Imp

3 8:13 pmIn Dobereiner's triad, 23 is the meanof atomic masses of Li and K. This isthe atomic mass of1 Na2 Ca3 Br8:13 pm

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Visit a furniture industry near your house. Look at the different kindsof simple machines used over there. Observe those machines yourself aswell as ask the carpenters and fill in the given table.

At what temperature is the root mean square speed of an atom in anargon gas cylinder equal to the rms speed of a helium gas atom at-20°C ?(atomic mass of Ar=39.9u,He=4.0u)

Name one vehicle that usea)multi plate clutch b)friction clutch c)semi centrifugal clutch

Give me right answer urgentthe process by which water converts into water vapour is called________a.) evaporation b.)transpirationc.) condensation d.)precipiation

Two identical resistors are first connected series and then in parallel . Find the ratio equivalent resistance in 2 cases

Hy cantour elbows bend backwards?hy does a blacksmith use heat to make vanous tools in his business?irement kept in the open gets soaked in rain What will be its con

Q1 - Select correct option:1. The structural formula of formic acid isA. H-COOHC. CH3-COOHB. CH3-CH2-CH2-COOHD. CH3-CH2-COOH

34. "Global warming' is on the rise due to anincreasing concentration of(a) Argon(b) NO3(c) SO2(d) CO2

Keywords in the long tail were characterized by the following except _______.a. Relevant to the pageb. Lesser with regard to competitionc. Limited to the number of searchesd. Driving greater conversion

The process by which water converts into water vapour is calleda. Evaporationb. Transpirationc. Condensationd. Precipitation

31.Which of the following vertebrates hasthe longest life span on Earth ?(a) Elephant(b) Giant Tortoise(c) Snake(d) None of these

The specific heat of substance depends upon ?︎︎︎︎︎︎︎︎︎︎︎︎Today's look :) #B- Day boy ❥︎

DjBinary fissioninj Multiple fissionBinary fission-During binary fision, the parent cell dividentwounter thedivides and form two nocle. Then the cytoplasm divides and foodParamecium and LeishmaniaBINARY FISSIONINAMOEBABINARY FISSION INLEISHMANIA

4cm high object is placed at a distance of 12cm from a converging lens of focal length of8cm. Determine the position, size and type of the image.

For which of the following do animals depend on plants?(i) shelter(ii) food(iii) seed dispersal(iv) transfer of pollen1 only (ii)2 only (i) and (ii)3 only (i), (ii) and (iii)4 all - (i), (ii), (iii) and (iv)

15. Assertion : The outer and inner lining of animal system is made up of epithelial tissue.Reason: Epithelial tissue may be simple or stratified.ORAssertion : Desert plants have thick waxy cuticle.Reason: Thick waxy coating over epidermal layer reduces transpiration.