If the sand in-situ is in its densest state, then the relative density of sand is

The densest of all the atmosphere layers is ----

A

troposphere

B

stratosphere

C

mesosphere

D

ionosphere

Insitu theory and drift theory are related to the

A

Origin of petroleum oil

B

Origin of coal

C

Coalification

D

Variation of coal quality with depth

During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

A

Equal to

B

Equal and opposite to

C

Less than

D

Greater than

In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.

A

Equal to

B

Less than

C

Greater than

D

None of these

Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when

A

Only vapor phase follows Raoult's law

B

Only liquid phase obeys Dalton's law

C

Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law

D

Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law

__________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals.

A

Separation efficiency

B

Selectivity index

C

Concentration ratio

D

None of these

What is the unit of relative density?

A

kg\/m

B

kg\/m2

C

kg\/m3

D

It has no unit

Density in the solid state is slightly less than that in its liquid state, in case of

A

Carbon dioxide

B

Water

C

Mercury

D

None of these

The density of hydrogen is _____ times the density of air.

A

0.07

B

1.5

C

2.5

D

3.5

Low density polythene as compared to high density polythene is

A

Harder

B

Tougher

C

Chemically inert

D

More flexible

If the sand in-situ is in its densest state, then the relative density of sand is

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