Q:

Which of the following is used in pencils?

A) Silicon	B) Phosphorous
C) Graphite	D) Charcoal

Answer & Explanation Answer: C) Graphite

Explanation:

A pencil is an implement for writing or drawing. It is a thin core of graphite well mixed with clay, inside a wooden body as protective casing that prevents the core from being broken.

Which_of_the_following_is_used_in_pencils1558506948.jpg image

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Filed Under: General Science
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184 50174

Q:

Which of the following is NOT a waste material removed from blood in the kidney?

A) Ammonia	B) Carbon dioxide
C) Urea	D) Uric acid

Answer & Explanation Answer: B) Carbon dioxide

Explanation:

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Filed Under: Chemistry
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Q:

The paintings in the Ajanta and Ellora caves are indicative of the development of art under the -

A) Pallavas	B) Chalukyas
C) Pandyas	D) Rashtrakutas

Answer & Explanation Answer: B) Chalukyas

Explanation:

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Filed Under: Indian Culture

596 50123

Q:

Match the following.

A) I – 2, II – 3, III – 1	B) I – 1, II – 3, III – 2
C) I – 2, II – 1, III – 3	D) I – 3, II – 2, III – 1

Answer & Explanation Answer: D) I – 3, II – 2, III – 1

Explanation:

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Filed Under: Biology
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Q:

Consider the following statements :

1. There is no net moment on a body which is in equilibrium.

2. The momentum of a body is always conserved.

3. The kinetic energy of an object is always conserved.

Which of the statements given above is/are correct?

A) 1, 2 and 3	B) 2 and 3 only
C) 1 and 2 only	D) 1 only

Answer & Explanation Answer: C) 1 and 2 only

Explanation:

There are two conditions that must be met for an object to be in equilibrium. The first condition is that the net force on the object must be zero for the object to be in equilibrium. If net force is zero, then net force along any direction is zero.

Kinetic energy (KE) is the energy of motion, and kinetic energy is not always conserved in a collision

Energy and momentum are always conserved.

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Filed Under: Physics
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Q:

Calculate the pressure (in Pa) if a thrust of 750 N is applied to an area of 5 m2.

A) 37.5	B) 150
C) 75	D) 100

Answer & Explanation Answer: B) 150

Explanation:

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Q:

What is the general formula of alkenes?

A) CnH2n	B) CnH2n+2
C) CnH2n-2	D) CnH2n-1

Answer & Explanation Answer: A) CnH2n

Explanation:

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Filed Under: Chemistry
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Q:

The most abundant of the rare gases i ?

A) Helium	B) Argon
C) Neon	D) Nitrogen

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