Questions

Q:

Which of the following cannot be used for making lenses?

A) Plastic B) Soil
C) Glass D) Water
 
Answer & Explanation Answer: B) Soil

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Q:

A body in motion essentially acquires

A) Kinetic energy B) Potential energy
C) Mechanical energy D) Heat energy
 
Answer & Explanation Answer: A) Kinetic energy

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Q:

All of the following are functions of the skin except

A) insulation B) site of vitamin A synthesis
C) excretion body wastes D) protection from mechanical damage
 
Answer & Explanation Answer: B) site of vitamin A synthesis

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Filed Under: General Science
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2 2063
Q:

Scanning means that the reader

A) reads every single word of the article. B) searches for the most important details.
C) looks for words to catch his or her attention. D) focuses on the text's conclusion.
 
Answer & Explanation Answer: B) searches for the most important details.

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Q:

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

London is one of the oldest towns of England.

A) in B) at
C) besides D) No improvement
 
Answer & Explanation Answer: A) in

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Filed Under: English
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Q:

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

 

Oracular

A) Lucid B) Distinct
C) Cryptic D) Unambiguous
 
Answer & Explanation Answer: C) Cryptic

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Q:

A cube is inscribed in a sphere. A right circular cylinder is within the cube touching all the vertical faces. A right circular once is inside the cylinder. Their heights are same and the diameter of the cone is equal to that of the cylinder.

Consider the following statements:

1) The surface area of the sphere is √5 Times the curved surface area of the cone.

2) The surface area of the cube is equal to the curved surface area of the cylinder. Which of the above statements is/are correct?

 

A) 1 only B) 2 only
C) Both 1 and 2  D) Neither 1 nor 2
 
Answer & Explanation Answer: D) Neither 1 nor 2

Explanation:
The top view of the given assembly will look like the figure above
Outermost is the sphere. Inside that there is a cube and within that there is a cone and cylinder with same radius.
Here side of cube = a
Diameter of Sphere = body diagnol = √3 a
Radius of sphere = √3 a/2 =r1
Height of Cylinder = Height of cone = side of cube = a =h
Radius of cylinder = Radius of cone = side of cube/2 = a/2 =r2(as shown in the figure)
 
Thus neither 1 nor 2 are true
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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.

A solemn promise or undertaking

A) Pledge B) Deceit
C) Myth D) Perjury
 
Answer & Explanation Answer: A) Pledge

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