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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1101.

Explain states of matter on the basis of kinetic molecular theory.​

Answer»

Answer:

The kinetic molecular theory of MATTER states that: Matter is made up of particles that are CONSTANTLY moving. All particles have energy, but the energy VARIES depending on the TEMPERATURE the sample of matter is in. This in turn DETERMINES whether the substance exists in the solid, liquid, or gaseous state.

1102.

The amount of heat required to change one form of matter to other without changing the temperature is called what ?​

Answer»

EXPLANATION:

VAPORIZATION

HOPE it HELPS

1103.

पंच शील ओके नाम लिखो​

Answer»

EXPLANATION:

MEANS

didn't UNDERSTANDING your QUESTION

1104.

Write the chemical property of nonmetals with suitable reaction​

Answer»

Explanation:

Non-metals generally have somewhere around 4 to 8 electrons in the outer SHELL. Non-metals TEND to gain or accept valence electrons. When they are exposed to OXYGEN, non-metals react with oxygen to FORM acidic oxides.

1105.

African is the largest continent of the world​

Answer»

Answer:

Africa, the second largest CONTINENT (after Asia), covering about one-fifth of the total land SURFACE of Earth.

1106.

Un antílope se encuentra descansando a 300m de un guepardo ¿Qué tiempo se demora en alcanzar a su presa si corre a una velocidad de 100km/hora y la gacela avanzó 100m más?

Answer»

Answer:

Communication is simply the ACT of transferring information from one PLACE, person or group to another. Every communication involves (at LEAST) one sender, a message and a recipient. ... These include our EMOTIONS, the cultural situation, the medium USED to communicate, and even our location.

1107.

उपास्थि के मैट्रिक्स में पाए जाने वाली कोशिका क्या कहलाती है?

Answer»

Answer

साथ ही इसमें थोड़ा लचीलापन भी होता है। इसी कारण उपास्थि हड्डी के जैसा सख्त और कड़ा नहीं होता। इसके मैट्रिक्स में कोलाजन फाइबरों और जीवित कोशिकाओं का अच्छा खासा नेटवर्क होता है जिसे कॉन्ड्रोसाइट्स (CHONDROCYTES) कहते हैं। ये तरल से भरे स्थानों जिन्हें गर्तिका(LACUNAE)कहते हैं, में मौजूद होते हैं।

HOPE IT HELPS DEAR!!!

1108.

Ques.26 On heating blue coloured powder of X, a black coloured copper oxide, oxygen gas and abrown gas Y is evolved.(b)write the balanced chemical equation(a) Identify X and Yinvolved(c) Identify the type of chemical reaction(d) Solution of gas Y is acidic /basic?​

Answer»

Answer:

b) 2CU(No2) 2 ==>2 CuO + O2 +4 NO2

a) X- CU(No2) 2

Y-NO2

c) decomposition reaction

d) ACIDIC

1109.

The oxidation number of "C" in CH⁴ molecule is​

Answer»

Charge of the molecule is 0. Charge of the molecule is 0. Charge of the molecule is 0. Since, the OXIDATION NUMBERS of C in CH4 , CH3Cl , CH2Cl2 , CHCl3 and CCl4 are −4,−2,0,+2,+4 respectively.

1110.

Muddy Water is a mixture not a compound. Explain ​

Answer»

Answer:

So, from the above discussed definitions, it is clear that the water is a COMPOUND and not a mixture because it is made up of only one kind of element i.e. OXYGEN and hydrogen ATOMS and HENCE, is a diatomic molecule. Note: Don't GET confused in the molecules and compounds.

1111.

Elements present in Acetic Acid​

Answer»

ANSWER:

ACETIC ACID : Carbon, hydrogen, OXYGEN.

1112.

To tabulate acids , bases , and salts found and used in your daily life used items.​

Answer»

Answer:

Hydrochloric acid used in the production of glucose from corn starch.

Carbonic acid (H2CO3) is used in aerated drinks.

Sulphuric acid is used in the MANUFACTURE of fertilisers, paints, dyes, CHEMICALS, plasti-cs and SYNTHETIC fibres.

Sulphuric acid is also used in CAR batteries.

Explanation:

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1113.

Define chemical substance in chemistry ​

Answer»

Explanation:

A chemical substance is a FORM of matter having CONSTANT chemical composition and characteristic properties.

Chemical SUBSTANCES MAY be combined or converted to others by MEANS of chemical reactions. Forms of energy, such as light and heat, are not matter, and are thus not "substances" in this regard.

1114.

An atom has 5 electrons in its outer shell. To which group of the periodic table does it belong?

Answer»

ANSWER:

NITROGEN

.

Explanation:

(i) Nitrogen is an ELEMENT with five electrons in its outershell

hope this will HELP you ☺️

1115.

52 g of He contains(a) 4 x 6.022 x 10*23 atoms(b) 13 atoms(c) 13 x 6.022 x 10*23 atoms(d) 4 atoms.​

Answer»

Answer:

(i)  52 moles of Ar

The number of atoms PRESENT in 52 mol of Ar can be calculated as follows.

1 moles of Ar = 6.022×1023 atoms of Ar

52 moles of Ar = 52 X 6.022 x 1023

∴ 52 moles of Ar = 3.13144 × 1025

(ii) 52 U of He

The atomic mass of He is 4 amu.

52 u of He will contain  52/4  = 13 atoms

(III) 52 g of He

1 mole of He = 4 g = 6.022 × 10²³ atoms of He

52 grams of He will contain = 52/4 = 13 moles

Number of atoms in 13 moles of He = 13 × 6.022 × 1023atoms

Number of atoms in 13 moles of He = 78.29× 1023 atoms

52 grams of He = 7.829 × 1024 atoms

1116.

Work out the mass of the sugar and water to prepare 150g of a 30% solution.

Answer»

Answer:

45

Explanation:

30÷100×150

zero's CUT

3÷1×15

45

1117.

Answer the questions please....​

Answer»

Answers:

1. (iii)

2. (i)

3. (II)

4. A = (2,8,2)

B = (2,8,8,1)

C = (2,5)

D = (2,8,8,8)

E = (2,8)

I hope this helps.

1118.

What is the difference between N2 and NH2 in short paragraph​

Answer»

Answer:

In All of the Molecules NITROGEN has sp3 hybridization , the only difference is in the angle of HNH bond which is different . In NH3 - There is 1 lone pair and hence due to LP BP repulsion the angle DECREASES a little . NH2- has two lone pair and therefore the decrease in bond angle is maximum

1119.

Which mixture does chromatagraphy used​

Answer»

Answer:

In gas CHROMATOGRAPHY, the mixture of interest is vaporized and carried through a STATIONARY phase (usually a METAL or glass separation column) with an INERT gas, usually NITROGEN or helium.

1120.

Who is known as the father of chemistry ?why?​

Answer»

Answer:

Astoine Laurent Lavoisier

Explanation:

The French chemist Antoine Laurent Lavoisier is CONSIDERED by many as the FATHER of Chemistry. He is believed to have revolutionized chemistry and was central to the CHEMICAL revolution of the 18TH CENTURY.

1121.

What do the following symbols stand for?(a) H(b) H2(c) 2H(d) 2H2​

Answer»

Answer:

H2 MEANS two HYDROGEN ATOMS. O2 means two oxygen atoms. ... 2H2 means two molecules of hydrogen and four hydrogen atoms

1122.

Balancing of chemical reaction is based on whatTHIS IS URGENT I WILL SURELY GIVE YOU THE BRILIYENT ANSWER

Answer»
1123.

Name the colouring agent using red for soft drink​

Answer»

ANSWER:

HI I can't UNDERSTAND sent me the details

1124.

Name the process that occurs when a drop of dettol is added to the water ​

Answer»

ANSWER:

it is a CHEMICAL PROCESS

1125.

What is the meaning of family?

Answer»

Answer:

A FAMILY is a group of people generally PARENTS and their CHILDREN living together as ONE unit.

1126.

3.007 and 3.700 are unlike , like or nine of these​

Answer»

Answer:

they are in ‘LIKE

Explanation:

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1127.

Mixing of powdered sulphur with iron fillings is a chemical change true or false​

Answer»

YES it is a chemical change as a NEW product will be FORMED

1128.

15. Write the basic radicals and acidic radicals of thefollowing and then write the chemical formulae of thesecompounds.(a) Barium sulphate​

Answer»

HAI FRIEND are you a GIRL

1129.

Which metal does make fire with the touch of water ?​

Answer»

ANSWER: The alkali METALS

Explanation: The alkali metals such as sodium, POTASSIUM and lithium react with WATER to produce heat and flammable hydrogen gas, which can ignite or combine EXPLOSIVELY with atmospheric oxygen.

1130.

In which salts the valency of metal (A) is 1?(a) A2CO3(b) A(NO3)2(c) ACIO(d) None of theseIn organic chemistry we study about(a) Carbohydrates (b) Fertilizers(c) Proteins(d) CeramicsWhich of the following are acidic radicals?(a) PO3-4(b) Mg2+(c) CO2-3(d) NO-3​

Answer»

Answer:

1. (C) AClO

2. (a) Carbohydrates

ps MARK me BRAINLIEST

1131.

Steam has the highest latent heat explain

Answer»

\huge \boxed{ \fcolorbox{purple}{black}{Answer}}

The temperature of the hot water LEAVING a steam TRAP will be at or just below the water boiling point CORRESPONDING to the pressure. ... As the latent heat of steam at atmospheric pressure is 2257 kJ/kg the amount of flash steam produced will be 299/2257 = 0.133 kg/kg of CONDENSATE.

1132.

An atom of fluorine is written as 9F ^19Write downThe number of protons(ii) The number of neutronsThe number of electrons(iv) Electronic configuration of fluorine atoms ​

Answer»

Answer:

This is the answer

Explanation:

No. Of protons = 9

No. Of neutrons = 10

No. Of electrons = 9

Electronic CONFIGURATION is 2 ,7

1133.

Pls answer this que how to balance​

Answer»

ANSWER:

Here is your answer

1134.

Freezing of water is an example of​

Answer»

Answer:

FREEZING of water is an example of

PHASE transition.

Explanation:

When water freezes, it converts from liquid water to solid water (also known as ice). Thus water freezing is an example of a phase transition. Change in phase is a physical change, since the molecules REMAIN the same and there is no change in the CHEMICAL composition of the material.

1135.

What is called binercalculators​

Answer»

Answer:

An ELECTRONIC calculator is typically a PORTABLE electronic DEVICE used to perform calculations, ranging from basic arithmetic to COMPLEX mathematics.

1136.

Help me to solve this Match the columns​

Answer»

ANSWER:

  1. F
  2. D
  3. E
  4. A
  5. B,C

I HOPE its HOPEFUL

1137.

Which is the main gas found in the air we breathe?​

Answer»

Answer:

Answer:Carbon dioxide

Carbon dioxide in the air can be both GOOD and bad

When humans and animals BREATHE, we give off an ODORLESS gas called carbon dioxide, or CO2.

1138.

15. Expenmental cars are using compounds of​

Answer»

ANSWER:

CAR 3

car 82

and

car 93

Explanation:

this is the answer

1139.

Eperimantal cars are using compounds of​

Answer»

EXPLANATION:

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1140.

6. Surabhi deposited *7500 in a finance company which pays interest 15% per annum. Find the amount3Surabhi is expected to get after 5 years.4​

Answer»

<P>Answer:

Rate=15%. Time=23/4years. SI= (P*R*T)/100. = (7500*15*23)/(100*4).

1141.

Eveluate the following mixture ?ink, muddy water, fog, atmosphere air, milk, sugar, water, dilute rice, classify them into true solution, colloid, and suspension​

Answer»

ANSWER:

SUSPENSION = MUDDY water and air ( DUST ) and dilute rice

COLLOID = ink , fog

solution = water , sugar

1142.

डीकमेन की साइक्लो ऐल्केन चक्रीयकरण संश्लेषण विधि पर टिप्पणी लिखिये?Write a note on Dieckmann's synthesis for cyclisation of cycloalkane​

Answer»

ANSWER:

बोध प्रश्न विश्लेषण और संश्लेषण विधि में अंतर स्पष्ट कीजिए। खोजता हूँ " ( ) इस विधि के जनक हेनरी एडवर्ड आर्मस्ट्रांग हैं।

विश्लेषण विधि क्या है ?

विश्लेषण विधि(ANALYSIS METHOD) एक शिक्षण विधि है। जिसमें किसी समस्या को पहले छोटे-छोटे भागों में विभाजित किया जाता है। उसके बाद समस्या के बारे में अध्ययन किया जाता है। फिर उसके निष्कर्ष पर पहुंचा जाता है।

संश्लेषण विधि क्या है ?

संश्लेषण विधि (SYNTHESIS Method) एक शिक्षण विधि है। इस विधि में ज्ञात से अज्ञात की ओर जाते हैं। अर्थात पहले से ज्ञात तथ्य एवं सूत्रों की सहायता से नए तथ्यों या समस्या के हल करने की शिक्षण विधि को संश्लेषण विधि करते हैं।

1143.

the following salt is used as fertilizer a) ammonium nitrate b) silver nitrate c) sodium bicarbonate d) sodium carbonate​

Answer»

Answer:

the following SALT is USED as FERTILIZER ..

d) SODIUM carbonate

1144.

I shall give you an apple​

Answer»

ANSWER:

PLEASE don't WRITE UNLESS QUESTIONS.

1145.

NaOH + H2SO4. --> Na2SO4 +2H2O. a)Sodium hydroxide,water. b)Sulphric acid,Water. c)water,sodium Sulphate d) none of the above​

Answer»

The products formed from the reaction between sodium HYDROXIDE and hydrogen SULPHATE is sodium sulphate and WATER.

1146.

Write the chemical equation for rusting of iron​

Answer»

Answer:

Let's return to the chemical reaction in which iron (Fe) COMBINES with oxygen (O2) to form rust, or iron OXIDE(Fe2O3). The equation for this reaction is: 4Fe+ 3O2 → 2Fe2O. This equation illustrates the use of COEFFICIENTS to balance chemical equations

1147.

What is lattice enthalpy?​

Answer»

Answer:

EXPLANATION:

Lattice enthalpy is a MEASURE of the strength of the forces between the ions in an ionic solid. The GREATER the lattice enthalpy, the stronger the forces.

As an example, the lattice energy of sodium CHLORIDE, NaCl, is the energy released when gaseous Na+ and Cl– ions COME together to form a lattice of alternating ions in the NaCl crystal.

1148.

Complete the equation Sn(s) + H2O(g) =​

Answer»

Answer:

Sn (s) + H2O (l) → SnO (s) + H2 (g)

EXPLANATION:

his is an oxidation-reduction (redox) reaction:

2 HI + 2 e- → 2 H0 (reduction)

Sn0 - 2 e- → SnII (oxidation)

H2O is an OXIDIZING agent, Sn is a REDUCING agent.

1149.

Definition of manioc in hiindi​

Answer»

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Manioc➜युद्ध

Hope it HELPS ☺️☘️

1150.

25) Identify nucleophiles and electrophiles from the following, NH3, ​

Answer»

Answer:

AMMONIA is a nucleophile because it has a lone pair of electrons and a δ⁻ CHARGE on the N ATOM. A nucleophile is a reactant that provides a pair of electrons to FORM a new covalent bond.

Explanation: