Biology Test 44

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Biology Test 44

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Weekly Quiz Competition

Question 1
4 / -1

Dimensions of energy are:

A
ML²T^-2

B
MT²

C
MLT²

D
ML²T

Solution

Dimensions of energy is ML²T^-2
Question 2
4 / -1

The reciprocal of bulk modulus is called

A
co-efficient of elasticity

B
shearing strain

C
volumetric strain

D
compressibility

Solution

The reciprocal of bulk modulus is called compressibility
Question 3
4 / -1

A lead ball falls through water more slowly than through air because

A
the value of g is less in water

B
density of air is less than that of water

C
of the viscous force in water

D
of the surface tension of water

Solution

A lead ball falls through water more slowly than through air because of the viscous force in water.
Question 4
4 / -1

Which of the following is the most elastic?

A
Rubber

B
Glass

C
Steel

D
Plastic

Solution

Steel is the most elastic as the greater the Young's modulus, greater the elasticity.
Question 5
4 / -1

What will be the effect on temperature of an ideal gas when some work is done during the adiabatic expansion and if the expansion process is reversible?

A
It increases

B
It decreases

C
It may increase or decrease

D
It will remain unchanged

Solution

In the adiabatic process, heat is neither take in not taken out of the system .During the expansion work done is positive so its temperature decreases.
Question 6
4 / -1

Unit of the Young's Modulus is:

A
Nm

B
Nm^-1

C
Nm^-2

D
None of the above

Solution

Unit of the Young's Modulus is Nm^-2
Question 7
4 / -1

The limit within which Hooke's Law is valid is known as:

A
elastic fatigue

B
elastic limit

C
yield point

D
breaking point

Solution

The limit within which Hooke's Law is valid is known as elastic limit.
Question 8
4 / -1

The dimensions of pressure are

A
ML¹T^-2

B
ML^-1T^-2

C
M⁰L^-2T^-2

D
ML²T^-2

Solution

The dimensions of pressure are ML^-¹T^-2
Question 9
4 / -1

Two glass plates are put together with a few drops of water between them. Then it becomes difficult to separate the two by pulling in opposite direction on account of:

A
friction

B
surface tension

C
atmospheric pressure

D
None of the these

Solution

Two glass plates are put together with a few drops of water between them. Then it becomes difficult to separate the two by pulling in opposite direction on account of surface tension.

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Biology Test 44

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Biology Test 44

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Question 1

ML2T-2

MT2

MLT2

ML2T

Solution

Question 2

co-efficient of elasticity

shearing strain

volumetric strain

compressibility

Solution

Question 3

the value of g is less in water

density of air is less than that of water

of the viscous force in water

of the surface tension of water

Solution

Question 4

Rubber

Glass

Steel

Plastic

Solution

Question 5

It increases

It decreases

It may increase or decrease

It will remain unchanged

Solution

Question 6

Nm

Nm-1

Nm-2

None of the above

Solution

Question 7

elastic fatigue

elastic limit

yield point

breaking point

Solution

Question 8

ML1T-2

ML-1T-2

M0L-2T-2

ML2T-2

Solution

Question 9

friction

surface tension

atmospheric pressure

None of the these

Solution

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ML²T^-2

MT²

MLT²

ML²T

Nm^-1

Nm^-2

ML¹T^-2

ML^-1T^-2

M⁰L^-2T^-2

ML²T^-2