Q:

Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)

A) the gold piece will weigh more	B) the silver piece will weighmore
C) both silver and gold pieces weigh equal	D) weighing will depend on their masses

Answer & Explanation Answer: B) the silver piece will weighmore

Explanation:

As it is said that density of gold is greater than that of density of silver, so silver occupies a greater volume than gold. So it has more upthrust from the water, although they both show the same weight under water, there is more silver present. Hence silver piece will weigh more.

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Filed Under: Physics
Exam Prep: Bank Exams

0 3508

Q:

What is the measurement at remote distances by means of a radio -link from the object to the ground called?

Answer

Telemetry

Workspace

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Subject: General Science

12 3506

Q:

Who among the following was the advisor to the Drafting Committee of Constiuent Assembly

A) B.Shiva Rao	B) B.R.Ambedkar
C) Sachchidananda Sinha	D) B.N.Rau

Answer & Explanation Answer: D) B.N.Rau

Explanation:

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Filed Under: Indian Politics

5 3506

Q:

Why does the sea appear blue in colour?

A) Reflection of the sun light from water surface	B) Interference of the sun light from water surface
C) Scattering of the sunlight by water molecules	D) refraction of the sun light

Answer & Explanation Answer: C) Scattering of the sunlight by water molecules

Explanation:

Sea appears blue in colour due to the scattering of the rays when they hit water molecules

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Filed Under: Physics

1 3505

Q:

Who amongst the following is the author of the book " Development as Freedom" ?

A) M.S. Swaminathan	B) C. Rangarajan
C) Y.V. Reddy	D) Amartya Sen

Answer & Explanation Answer: D) Amartya Sen

Explanation:

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Filed Under: General Awareness

2 3504

Q:

The grouping of blood is based on substances called

A) antibodies	B) antigens
C) antitoxin	D) enzymes

Answer & Explanation Answer: B) antigens

Explanation:

The red blood corpuscles or erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen B in their red corpuscles. The AB group person have both antigen A and antigen B in their erythrocytes. The 'O' group persons have no antigens in their red corpuscles.

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Filed Under: Biology

7 3504

Q:

The Kinetic energy of gas molecules

A) is unaffected by temperature variations	B) decreases with increase of temperature
C) increases with decrease of temperature	D) increases with increase of temperature

Answer & Explanation Answer: D) increases with increase of temperature

Explanation:

Kinetic Energy $K . E = \frac{1}{2} m V^{2}$ or

$K . E \propto V^{2}$ , Where 'm' is the mass and 'v' is the velocity of molecules.

Velocity is proportional to temperature. Hence, KE is proportional to temperature and would increase with temperature.

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Filed Under: Chemistry
Exam Prep: AIEEE

18 3503

Q:

An element X forms an oxide $XO_{_{3}}$ , what ihe valency of X

A) 1	B) 2
C) 3	D) 6

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