Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

OPTION a. BATTERY it is the SOURCE of ELECTRICITY

ANSWER:

True

True

True

False

True

False

True

True

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ANSWER:

magnesium is the most REACTIVE followed by zinic then iron then lastly COPPER. The student will observe that there will be no reaction when copper is added on sulphate solution since copper does not react with sulphur ACCORDING to the RESEARCHES.

EXPLANATION:

PASCAL barabar 1 NEWTON METRE Nm-2 or,kgm-1, S-2 g

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Explanation:

Advantages of FRICTION:

1. Friction enables us to walk freely.

2. It helps to support ladder against wall.

3. It becomes possible to transfer one FORM of energy to another.

4. Objects can be piled up without slipping.

5. Breaks of vehicles work due to friction.

Disadvantages of friction:

1.It always resists the motion, so extra energy is required to overcome it.

2.It causes wear and TEAR of machines.

3.It decreases the life expectancy of moving parts of vehicles.

4.Since friction is very useful in some cases while harmful in some cases, friction is called a necessary evil.

Answer:

1 FALSE

2 TRUE

3 false

4 false

Answer:

Chemical effect of the ELECTRIC current:

The passage of an electric current through a CONDUCTING solution causes chemical reaction. That may cause formation of bubbles of a gas on the ELECTRODES, deposites of metal on electrodes, CHANGES of colour of SOLUTIONS etc.

ANSWER:

OHHHHHH I am SURE you are not the INTENDED RECIPIENT you are not

ANSWER:

building/cement

Explanation:

Answer:

there are two TYPES of MIRROR concave mirror which is also known as CONVERGING mirror and other is concave mirror which KNOWS as diverging mirror

EXPLANATION:

There are three types of aliphatic hydrocarbons. Alkanes are aliphatic hydrocarbons with only single COVALENT bonds. ALKENES are aliphatic hydrocarbons that contain at least ONE C–C double bond, and alkynes are aliphatic hydrocarbons that contain a C–C triple bond.

Answer:

Op

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Answer:

this happens when water is boiled as you can see boiling the water causes the precipitation of solid calcium carbonate or solid magneesium carbonate. this removes the calcium IONS or the MAGNESIUM ions from the water and so removes the hardness therefore hardness due to hydrogen carbons is SAID to be temporary

hope this HELPS you

<U>it's A arabic LANGUAGE?

but i didn't understand what u are saying

طعا

امممممم

I KNOW Arabic

in ENGLISH ⤵

1. Of course
2. Mmmm

Btw Sorry please resend your question in English

Answer:

Dear friends ‚

Explanation:

10 elements are =

i) Hydrogen (H)

ii) Helium (He)

iii) LITHIUM (Li)

IV) Boron ( B)

v) Carbon (C)

vi) Nitrogen (N)

vii) Oxygen (O)

viii) Beryllium (Be)

ix) Fluorine (F)

X) Neon (Ne)

ANSWER:

Because they don't WANT to GO there where are HUMAN BEINGS

ANSWER:

विभिन्न जैविक स्तरों पर भाग लेने वाले जीवों की शृंखला आहार शृंखला का निर्माण करती हैं। जीवों की वह शृंखला जिसमे हर एक चरण में पोषी स्तर का निर्माण होता है तथा जिसमे जीव एक दुसरे का आहार करते है। इसी प्रकार विभिन्न जैविक स्तर पर भाग लेने वाले जीवो की इस शृंखला को आहार शृंखला कहते है।

आहार जाल

विभिन्न आहार शृंखलाओं की लंबाई एवं जटिलता में बहुत अंतर होता है। आमतौर पर प्रत्येक जीव दो अथवा अधिक प्रकार के जीवों द्वारा खाया जाता है जो स्वयं अनेक प्रकार के आहार बनाते हैं। अतः एक सीधी आहार शृंखला के बजाय जीवों के मध्य आहार संबंध शाखान्वित होते हैं तथा शाखान्वित शृंखलाओं का एक जाल बनाते हैं जिससे ‘आहार जाल’ कहते हैं।

आहार शृंखला एवं जाल में अन्तर

1.आहार शृंखला में कई पोषी स्तर मिलकर इसका निर्माण करते है।

2. इसमें उर्जा के प्रवाह की दिशा एक रेखीय होती है।

3. आहार शृंखला सामान्यतः तीन अथवा चार चरण की होती है।

आहार जाल

1. कई आहार शृंखला मिलकर आहार जाल का निर्माण करती है।

2. इसमें उर्जा का प्रवाह शाखान्वित होता है।

3. यह एक जाल की तरह होता है जिसमे कई चरण होते है।

आहार शृंखला का प्रत्येक चरण अथवा कड़ी एक पोषी स्तर बनाते हैं। स्वपोषी अथवा उत्पादक जो की अपना भोजन स्वय बनाते है प्रथम पोषी स्तर हैं तथा सौर ऊर्जा का स्थिरीकरण करके उसे विषमपोषियों अथवा उपभोक्ताओं के लिए उपलब्ध कराते हैं। शाकाहारी अथवा प्राथमिक उपभोक्ता दूसरा पोषी स्तर बनाते है। छोटे मांसाहारी अथवा दूसरा उपभोक्ता मिलकर तीसरे पोषी स्तर बनाते है तथा बड़े मांसाहारी अथवा तृतीय उपभोक्ता चौथे पोषी स्तर का निर्माण करते हैं।

हम जानते हैं कि जो भोजन हम खाते हैं हमारे लिए ऊर्जा स्रोत का कार्य करता है तथा विभिन्न कार्यों के लिए ऊर्जा प्रदान करता है। अतः पर्यावरण के विभिन्न घटकों की परस्पर अन्योन्य क्रिया में निकाय के एक घटक से दूसरे में ऊर्जा का प्रवाह होता है। स्वपोषी सौर प्रकाश में निहित ऊर्जा को ग्रहण करके उसे रासायनिक ऊर्जा में बदल देते हैं। यह ऊर्जा संसार के संपूर्ण जैव समुदाय की सभी क्रियाओं के संपादन में सहायक होती है। स्वपोषी से ऊर्जा विषमपोषी एवं अपघटकों तक जाती है

जब ऊर्जा का एक रूप से दूसरे रूप में परिवर्तन होता है तो पर्यावरण में ऊर्जा की कुछ मात्रा का अनुपयोगी ऊर्जा के रूप में ह्नास हो जाता है। पर्यावरण के विभिन्न घटकों के बीच ऊर्जा के प्रवाह होता है

Explanation:

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ANSWER:

STATEMENT is CORRECT but what's your QUESTION?

HCL आमाशय में भोजन को अम्लीय माध्यम में बदलता है तथा हाइड्रोक्लोरिक अम्ल के पेप्पसीनोजन सक्रिय पेप्पसीन में बदलता है

EXPLANATION:

After reflection/ REFRACTION through a MIRROR/ LENS,when light rays actually meet at a point,then the second point is the REAL image of the first point.Real image can also be obtained on a screen.

Answer:

Per the AMU definition, a single 12C atom weighs 12 amu (its ATOMIC mass is 12 amu). A MOLE of 12C weighs 12 g (its MOLAR mass is 12 g/mol).

EXPLANATION:

Electric current has the following effect :

(i) Electric current can give rise to heating and lighting. (ii) Electric current can convert a STRAIGHT CONDUCTOR into a temporary magnet.

correct answer

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ANSWER:

CHRONIC venous insufficiency occurs when your leg veins don't allow blood to FLOW back up to your heart. Symptoms include pain, SWELLING, cramps, and skin changes. Some common causes are being overweight and having damage to a leg, such as from an injury or blood CLOT.

ANSWER:

The STATE of being HAPPY

Explanation:

When your happy

EXPLANATION:

FLOW of ELECTIONS in with a POTENTIAL DIFFERENCE

Answer:

HMM I don't understand this question can you EXPLAIN more PROPERLY please

ANSWER:

there you ROCK

EXPLANATION:

CHECK the PHOTO

Explanation:

Specialised cells have a specific role to perform. Each specialised cell has a DIFFERENT job to do. They have SPECIAL features that allow them to do these jobs. Muscle cells, for EXAMPLE, are held TOGETHER in bundles, which pull together to make muscles CONTRACT.

1. EYE.

2 .wings

3.compound eyes

4. 3

5. 60 to 100

ANSWER:

HEY

EXPLANATION:

HIT me up on pad-let

22dtdelong

Answer:

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EXPLANATION:

DRAW a LINE 6.5cm and draw its PERPENDICULAR BISECTOR ?

Explanation:

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ANSWER:

MAGNETIC lines of force are the IMAGINARY lines that are used to illustrate and describe the pattern of the magnetic field. These lines travel from the north pole to south pole OUTSIDE the magnet BODY.

ANSWER:

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Explanation:

1.false

2. true

3. false

4. false

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Answer:

) U = -20cm, V = -15cm

We know that

1/v + 1/u = 1/F

⇒ 1/-15 + 1/-20 = 1/f

⇒ 1/f = - (1/15) – 1/20 = (-4 – 3)/60 = - (7/60)

∴ f = - (60/7) cm

The mirror is a concave mirror.

(b) u = -20cm, v = 15cm

We know that

1/v + 1/u = 1/f

⇒ 1/15 + 1/-20 = 1/f

Explanation:

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ANSWER:

What is this question about

EXPLANATION:

Can you plz check my biography

ANSWER:

b

Explanation:

ANSWER:

A magnetic field is a vector field that describes the magnetic influence on MOVING electric charges, electric currents, and magnetic materials. A moving CHARGE in a magnetic field EXPERIENCES a FORCE perpendicular to its own velocity and to the magnetic field.

Answer:

potential ENERGY: STORED energy

heat: the flow of THERMAL energy

conductor: assist the flow of energy

kinetic energy: energy from movement

insulator: resists energy

temperature: the average kinetic energy of particles

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ANSWER:

OK I will HELP you but what HAPPENED

It makes sense to believe that cold water would turn to ice before hot water because the hot water would need to cool first before it could freeze; but how do you know if that idea is correct? Test this theory—untested idea—will tell you whether cold water actually freezes faster than hot water.

Problem:

Does temperature affect how quickly water freezes?

Materials:

• Freezer
• 3 bowls of equal size and shape
• Sticky labels
• Marker
• Water
• Measuring cup
• Thermometer
• Notebook
• PENCIL
• Procedure:

Clear enough room in your freezer for the three bowls. You need to be able to put them in the freezer at exactly the same time, so you don't want to be moving your frozen food and drinks AROUND later.

Think about what you know about ice. What temperature is water right before it freezes? You probably usually take baths in warm water. How quickly does the water turn cold when you're in the tub?

After considering different temperatures of water and ice, make a guess—called a HYPOTHESIS—answering the question: Does hot water freeze faster than cold water?

Write your hypothesis in your notebook, including whether you think the hot, warm, or cold water would freeze first and why.

Using your marker, write Hot on one of your sticky labels. Repeat with labels for Warm and Cold.

Place the sticky labels on each of the three bowls, using one per bowl. The labels will help you keep track of which bowl holds which temperature of water.

With your pencil, draw three columns in your notebook. Label the first column Hot, the second one Warm and the third Cold.

With the help of an adult, heat 1 cup of water to 100 DEGREES Fahrenheit. Pour it into the Hot bowl, being careful not to burn yourself.

Heat 1 cup of water to 70 degrees Fahrenheit, and pour it into the Warm bowl.

Fill the Cold bowl with water that's 40 degrees Fahrenheit.

Immediately place all three bowls in the freezer.

Record the starting temperatures in the correct columns of your notebook.

Open the freezer door every 10 minutes and take the temperature of the water in each bowl with a thermometer. Record the temperature in your notebook.

Repeat Step 13 until all three bowls have frozen over.

Compare the information in each of the three columns in your notebook. Was your hypothesis correct?

Results:

The bowls that contain the hot and warm water will freezer faster than the bowl that is filled with cold water.

Why?

Hot water freezing more quickly than cold water is known as the Mpemba effect. So, why does the Mpemba effect occur?

• First, all water evaporates, which means that the liquid (water) "disappears" and becomes a vapor, or gas. Hot water evaporates at a much faster rate than cold water. This means that the bowl with hot water actually had less water than the bowl with cold water, which helped it freeze more quickly.

• Second, convection (the transfer of heat within the water as it moves around) plays a part in helping hot water freeze more quickly than the bowl of cold water. The hot water has more convection currents than cold water, causing it to cool down much more quickly. That's why your bath water always seems to get cold much faster than you'd like!

• Now that you know about freezing water at different temperatures, keep the science going by testing other liquids, such as milk or apple juice. Will warm milk freeze faster than cold milk? Or, switch up the project altogether! Does milk freeze faster than water at the same temperature? Science is all about guessing what will happen, then testing to see if you're right. You now know that hot water freezes faster than cold water, so brainstorm a new project that you're interested in. By constantly changing your experiments, you'll continue learning new things—and become a science whiz!

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❥A᭄ɴsᴡᴇʀ࿐:

false

Explanation:-

CORRECT ANSWER

FORCE=mass×acceleration.

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Answer:

positive and negative

Explanation:

PHOTO SYNTHESIS is the process by which PLANTS prepare their own FOOD

ANSWER:

high to LOW ENERGY 1 st ONE

ANSWER:

a) SONOGRAPHY

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Answer:

SOCIAL CHANGE INVOLVES alteration of the social order of a SOCIETY. It may include changes in social institutions, social behaviours or social relations.

Answer:

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Answer:

VITAL connection between MOTHER and FOETUS for EXCHANGE of materials is placenta.

Explanation:

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ANSWER:

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