Questions

Q:

For an ideal gas, which one of the following statements does not hold true?

A) The speed of all gas molecules is same B) The kinetic energies of all gas molecules are not same
C) The potential energy of the gas molecules is zero D) There is no interactive force between the molecules.
 
Answer & Explanation Answer: A) The speed of all gas molecules is same

Explanation:

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.

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Filed Under: Physics
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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

 

The state or quality of being holy, sacred, or saintly

 

 

A) Base B) Sanctity
C) Vile D) Heinous
 
Answer & Explanation Answer: B) Sanctity

Explanation:
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Filed Under: English
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Q:

What is the difference between, page directive include, action tag include?

Answer

One difference is while using the include page directive, in translation time it is creating two servelts. But, while using the include action tag, in translation time it is creating only one servlet.

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Subject: Hardware

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Q:

What is a deadlock?

Answer

Deadlock is a situation where a group of processes are all blocked and none of them can become unblocked until one of the other becomes unblocked. The simplest deadlock is two processes each of which is waiting for a message from the other.

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Q:

The compound used in prickly-­heat powder to prevent excessive sweating is

A) Boric acid B) Phosphoric acid
C) Carbonic acid D) Sulphonic acid
 
Answer & Explanation Answer: A) Boric acid

Explanation:
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Q:

Which among the following has the maximum density?

A) Water B) Ice
C) Ethylene D) Acetone
 
Answer & Explanation Answer: A) Water

Explanation:
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Q:

Which one of the following physical quantities has the same dimensions as that of Planck’s constant h?

A) Linear momentum B) Angular momentum
C) Force D) Potential energy
 
Answer & Explanation Answer: B) Angular momentum

Explanation:

In S.I. System unit of angular momentum is "joule.Second".

SI unit of Planck's constant is joule-seconds(j-s).

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Q:

Calculate the time period (in seconds) of a sound wave of wavelength 2m travelling with a speed of 250 m/s.

A) 500 B) 0.008
C) 0.016 D) 250
 
Answer & Explanation Answer: B) 0.008

Explanation:
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