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Q:

Ultrasonic waves are used for stirring liquid solutions because they 

A) do not produce noise during the operation B) are easy to produce
C) can produce perfectly homogeneous solutions D) do not produce chemical reactions in the solution
 
Answer & Explanation Answer: C) can produce perfectly homogeneous solutions

Explanation:
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Filed Under: Physics

87 14873
Q:

Two cubes have their volumes in the ratio 1 : 27. Find the ratio of their surface areas.

A) 2:9 B) 3:9
C) 1:9 D) 4:9
 
Answer & Explanation Answer: C) 1:9

Explanation:

Let their edges be a and b. Then,

 

a3/b3 = 1/27 (or) (a/b)3 = (1/3)3 (or) (a/b) = (1/3).

 

\Ratio of their surface area = 6a2/6b2 = a2/b2 = (a/b)2 = 1/9, i.e. 1:9.

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Filed Under: Quantitative Aptitude - Arithmetic Ability

31 14865
Q:

The nitrogen atom has 7 protons and 7 electrons,The nitride ion will have

A) 10 protons and 7 electrons B) 7 protons and 10 electrons
C) 4 protons and 7 electrons D) 4 protons and 10 electrons
 
Answer & Explanation Answer: B) 7 protons and 10 electrons

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Filed Under: Chemistry

42 14844
Q:

Which of these artist was principally entrusted with the task of 'Illuminating' the original document of the Constitution of India ?

A) Benode Behari Mukherrjee B) Nand lal Bose
C) Abanindranath Tagore D) Ram Kinkar Baij
 
Answer & Explanation Answer: B) Nand lal Bose

Explanation:
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Filed Under: Indian Politics
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

54 14841
Q:

Manipur has common boundaries with the group of states of

A) Meghalaya, Mizoram and Tripura B) Nagaland, Mizoram and Meghalaya
C) Nagaland, Assam and Mizoram D) Nagaland, Meghalaya and Tripura
 
Answer & Explanation Answer: C) Nagaland, Assam and Mizoram

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Filed Under: Indian Geography

53 14840
Q:

Civil equality implies

A) Equality before law B) Equality of opportunity
C) Equal distribution of wealth D) Equal right to participate in the affairs of the State
 
Answer & Explanation Answer: A) Equality before law

Explanation:
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Filed Under: Indian Politics

34 14836
Q:

A Computer works on a _______ number system

A) binary B) octal
C) decimal D) hexadecimal
 
Answer & Explanation Answer: A) binary

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams

49 14835
Q:

Pieces of camphor placed on water move about rapidly. This is because of

A) diffusion B) viscosity
C) surface tension D) capillarity
 
Answer & Explanation Answer: C) surface tension

Explanation:

The Camphor slowly dissolves in the water lowering the latter's surface tension in the immediate neighbourhood. The stronger pull exerted by the uncontaminated portion of water brings about a movement of the surface and the camphor particles are carried along with it. When after sometime the whole surface settles for the reduced tension, the movement of the camphor too short.

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Filed Under: Physics

66 14832