1. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because ?

it is easier to see through the glass tube

glass tube is cheaper than a metallic tube

it is not possible to conduct this experiment with any other tube

all of the above

Answer: it is easier to see through the glass tube

Explanation:


2. The stability of a dam is checked for ?

tension at the base

overturning of the wall or dam

sliding of the wall or dam

all of these

Answer: all of these

Explanation:


3. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in ?

neutral equilibrium

stable equilibrium

unstable equilibrium

none of these

Answer: stable equilibrium

Explanation:


4. An orifice is said to be large, if ?

the size of orifice is large

the velocity of flow is large

the available head of liquid is more than 5 times the height of orifice

the available head of liquid is less than 5 times the height of orifice

Answer: the available head of liquid is less than 5 times the height of orifice

Explanation:


5. The variation in the volume of a liquid with the variation of pressure is called its ?

surface tension

compressibility

capillarity

viscosity

Answer: compressibility

Explanation:


6. The buoyancy depends upon the ?

weight of the liquid displaced

pressure with which the liquid is displace

viscosity of the liquid

compressibility of the liquid

Answer: weight of the liquid displaced

Explanation:


7. In one dimensional flow, the flow ?

is steady and uniform

takes place in straight line

takes place in curve

takes place in one direction

Answer: takes place in straight line

Explanation:


8. Falling drops of water become spheres due to the property of ?

surface tension of water

compressibility of water

capillarity of water

viscosity of water

Answer: surface tension of water

Explanation:


9. The intensity of pressure at any point, in a liquid, is ?

directly proportional to the area of the vessel containing liquid

directly proportional to the depth of liquid from the surface

directly proportional to the length of the vessel containing liquid

inversely proportional to the depth of liquid from the surface

Answer: directly proportional to the depth of liquid from the surface

Explanation:


10. One cubic metre of water weighs ?

100 litres

250 litres

500 litres

1000 litres

Answer: 1000 litres

Explanation: