Question 1 :
The force with which the earth attracts a body is called its mass. True or false.
Question 3 :
Assertion: Specific gravity of a fluid is a dimensionless quantity.
Reason: It is the ratio of density of fluid to the density of water.
Question 5 :
State whether given statement is True or False<br/>Archimede's principle describes the magnitude of a buoyant force acting on a body that is partly or completely submerged in a fluid.<br/>
Question 6 :
State whether true or false:The deeper an underwater swimmer goes, the more strongly the water pushes on his body and the greater is the pressure that he experiences.<br/>
Question 7 :
If the weight of a body on the earth is 12 Newtons (N), its weight on the moon will be:
Question 8 :
Assertion: The value of acceleration due to gravity does not depend upon the mass of the body.
Reason: Acceleration due to gravity is a constant quantity.
Question 9 :
Value of 'g' on moon is _________ of the value of 'g' on earth. Fill in the blank.
Question 13 :
A person stands on a weighing machine kept on the floor of an elevator, suppose the cable breaks, then the weighing machine will give a reading equal to 
Question 14 :
If W be the weight of the body and U be the upthrust force oft he liquid on the body then what happens if W=U<br>
Question 15 :
When an object is immersed in water, it displaces $20\,kg$ of water. How much is the buoyant force acting on the object in Newtons?
Question 16 :
Acceleration due to gravity of a body during free fall does not depend upon the:
Question 18 :
Fill in the blank. The magnitude of buoyant force depends on the ___________ of the fluid.<br/>
Question 20 :
Fill in the blank.When a solid object is immersed in a liquid, _________ force acts on the object because of the volume of liquid displaced.
Question 21 :
Fill in the blank.It is the ______ which makes balloon to rise in air. 
Question 23 :
Any solid will not sink in water if its relative density is