[1 Mark Question Answer]

Question 11 Mark

Write the factors that determine whether a solid will float or sink in a liquid.

Answer

The factors that determine whether a solid will float or sink in a liquid are the densities of both the solid and the liquid.

Question 21 Mark

Write the order in which the density decreases in three states of matter.

Answer

The order in which the density decreases in the three states of matter is
Solids $>$ Liquids $>$ Gases

Question 31 Mark

How can we determine the volume of a liquid with a meniscus that curves upwards?

Answer

If a liquid has a meniscus that curves upwards, the volume of the liquid can be determined by reading the top of the meniscus.

Question 41 Mark

safety pin empty polythene bag metal key metal lock stone $–$

Answer

empty polythene bag

Question 51 Mark

iron nail cork plastic paper thermocol $–$

Answer

iron nail

Question 61 Mark

temperature mass relative density weight density $–$

Answer

relative density

Question 71 Mark

$\ce{kg/L \ 100 g/cm ^3 \ 50 mg/mm^{3} 6 N0.1 \ kg/mL –}$

Answer

$6N$

Question 81 Mark

Why is an air$-$conditioner normally installed at a height in a room ?

Answer

An air conditioner is installed at a height in a room so that the convection currents can cool the entire room efficiently.

PHYSICS [1 Mark Question Answer]