Question # 1

The surface of a liquid is somewhat similar to a stretched membrane because.

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There is an elastic stress in the surface

Tension in the surface increases if the area is increased

The surface has a natural tendency to contract

Ripples can be produced on the surface

A rectangular block has length 6 cm, width 5 cm and height 10 cm Its mass is 150 g The density of the block is

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0.2 g cm-3

0.5 g cm-3

2 g cm-3

5 g cm-3

The fluid which is incompressible and non viscous is called.

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Viscous fluid

Nonideal fluid

Ideal fluid

Perfect fluid

In which one of the following states molecules do net leavt their position.

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Solid

Liquid

Gas

Plasma

Which liquid can flow easily.

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Traacle

Pitch

Ether

All flow with same rate

Which of the following is more viscous

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Air

Honey

Water

Milk

Liquids with disordered structure frozen in are an example of

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Amorphous solids

Glassy solids

Crystalline solids

Polymeric molecules

The SI unit of modulus of elasticity us

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N m-2

N m-1

N m

N m -3

Which principle is in effect when a ship displaces ocean water.

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Bernouli's

Pascal's

Hook's

Archimedes

A piece of weighed wood just floats in water when placed in alcohol will

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Float lower

Float higher

Stay as before

Sink

Which of the substances is the lightest one.

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Copper

Mercury

Aluminium

Lead

When the deforming force applied on a body produces change in shape, thenit is said t be

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Tensile stress

Compression stress

Shear stress

Shear modulus

Permanent change in shape or size of a solid body without fracture resulting from the application of strained stress beyond the elastic limit is called.

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Elastic limit

Plastic limit

elastic deformation

Plastic deformation

The force that moves a rocket or a plane forward is called.

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Lift

drag

Thrust

Turbulence

The change in the dimensions of a body produced by the action of the deformation force is known as.

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Strain

Stress

Tensile strain

Tensile stress

The product of velocity and cross sectional are for a liquid flowing through a pipe is a measure of the.

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Rate of flow

Volume of fluid

Fluid pressure

Fluid friction

A structure that is intermediate between order and disorder is.

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glassy solids

Polymeric solids

Amorphous solids

Crystalline solids

Which of the following solids exhibits only short range order.

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Amorphous solids

Polymeric solids

Crystalline solids

All of the above

A solid in which there is no regular arrangement of molecules.

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Amorphous solids

Glassy solids

Crystalline solids

Polymerization

Viscosity will be maximum when

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Water is at 20 ^oC

Honey is at 20 ^oC

Water is at 100 ^oC

Milk is at 100 ^oC

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

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