Questions

Q:

A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity  water rises in the tube. The height of water rise in the tube can be increased by 

A) decreasing the radius of the capillary tube B) increasing the radius of the capillary tube
C) increasing the height of water in the vessel D) None of these
 
Answer & Explanation Answer: A) decreasing the radius of the capillary tube

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to (balances) the upward force due to surface tension. So it is clear that if the the bore (radius) to the tube is decreased, the height of the water column in it must be greater.  So, (a) is correct.

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Q:

The organizational form in which the project manager has informal authority over team members and little or no input to team member’s performance appraisal is called

A) weak matrix. B) functional.
C) strong matrix. D) composite.
 
Answer & Explanation Answer: A) weak matrix.

Explanation:

“Weak matrices maintain many of the characteristics of a functional organization, and the project manager role is more that of a coordinator or expediter than that of a true project manager.”

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Q:

Outward extension of the shoulder bone is the

A) acromion B) foramen
C) cancellous bone D) All of the above
 
Answer & Explanation Answer: A) acromion

Explanation:

Outward extension of the shoulder bone is called as the acromion.

acromion1533537961.jpg image

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Filed Under: Biology
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Q:

In the case of bodies falling under gravity which of the following remains constant at a given place?

A) Kinetic energy B) Potential energy
C) acceleration D) all the above
 
Answer & Explanation Answer: C) acceleration

Explanation:

This acceleeration denoted by letter g varies from place to place. Unless stated otherwise, it can be taken 9.8 m/s2.

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Q:

During the recent Venus transit (June 2012), the planet appeared as a tiny black circle moving on the Sun. The black colour on the sun is because the planet :

 

A) Is black in colour B) Obstructed all light from the sun
C) Was invisible due to bright rays from the Sun D) Behaved as a black hole during its transit
 
Answer & Explanation Answer: D) Behaved as a black hole during its transit

Explanation:
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Q:

A system of writing evolved by Sumerians is known as ______

A) Pictograms B) Cuneiform
C) Hieroglyphic D) None of these
 
Answer & Explanation Answer: B) Cuneiform

Explanation:

The Sumerians were the first to evolve a proper system of writing called cuneiform. The script is wedge-shaped. Henry Rawlinson a British officer, deciphered the cuneiform script. He discovered by chance an inscription known as the behistun inscription. Relentless work of almost 12 years by Henry Rawlinson on this inscription, he managed to decipher the cuneiform script.

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Q:

Nuclear explosive devices were tested in india at

A) Pokhran B) Kanchipuram
C) Sriharikota D) None of the above
 
Answer & Explanation Answer: A) Pokhran

Explanation:
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Q:

Which best describes how air moves during convection?

A) cool air falls down B) warm air falls down
C) cool air is replaced by warm air D) air always falls down
 
Answer & Explanation Answer: A) cool air falls down

Explanation:

During convection, cool and dense air falls through the warmer and less dense air. The warm air having less mass is being displaced by the cooler which is much heavy. Convection always involves the air rising through the atmosphere.

 

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Filed Under: Physics
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