Questions

Q:

A wire of copper having length I and area of cross-section A is taken and a current / is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

A) P B) < P
C) > P D) 2P
 
Answer & Explanation Answer: C) > P

Explanation:

Aluminum has a resistivity varying from 2.65 to 2.82 × 10−8 Ω m.The resistivity of copper is generally given as: 1.72 x 10-8 Ω.m.So, since resistivity of aluminium is higher than that of copper, so Power dissipated will be greater than P. this is because rest of the factors (l, A and i) are constant.

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

An irregular mode of reproduction resulting in the development of an embryo without fertilization is called

1.Parthenogenesis 2.Apogamy 3.Sporophytic budding

Select the correct answer using the code given below.

A) 1 only B) 2 only
C) 2 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

Explanation:

In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. In plants parthenogenesis is a component process of apomixis.Apogamy is a type of reproduction, occurring in some ferns, in which the sporophytedevelops from the gametophyte without fusion of gametes.Adventitious embryony also called sporophytic budding, is a type of apomixis in which an embryo develops directly from nucellus or integument tissue.So, all three are correct.

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Filed Under: Biology
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Q:

The only perennial river in Peninsular India is _____ .

A) Godavari B) Kaveri
C) Krishna D) Bhima
 
Answer & Explanation Answer: B) Kaveri

Explanation:
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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

Anarchy means

A) Government by the rich B) Government by the King/Queen
C) Government by the God D) Absence of government
 
Answer & Explanation Answer: D) Absence of government

Explanation:

Anarchy means Absence of government.

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

The constitution of India describes India as

A) Unitary B) A quasi - federal
C) Union of States D) A Federation
 
Answer & Explanation Answer: C) Union of States

Explanation:

The Article - I of the constitution of India describes India as Union of States.

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Filed Under: Indian Politics
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Q:

The Waterfall with the greatest meterage in the fall is 

A) The Jog Falls, India B) The Victoria Falls, Africa
C) The Niagara Falls, N America D) The Salto Angel Falls, S America
 
Answer & Explanation Answer: D) The Salto Angel Falls, S America

Explanation:

The greatest single drop of the waterfall, Salto Angel of Venezuela, measures 807m and the width at the base is about 150 m. From top to bottom the Angel falls measures 979 m - almost 1 km.

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Filed Under: World Geography

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Q:

Which physical quantity is measured in 'siemens'?

A) Electric potential B) Electrical conductance
C) Magnetic flux D) Refractive index
 
Answer & Explanation Answer: B) Electrical conductance

Explanation:
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Filed Under: Physics
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Q:

Improve the bracketed part of the sentence.
The student of human history can draw on many more natural experiments (than) just comparisons among the five inhabited continents.

A) to B) of
C) for D) no improvement
 
Answer & Explanation Answer: D) no improvement

Explanation:
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Filed Under: English

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