Class 8th F Chapter # 5 test 1

spreading of rotten egg smell throughout the room is an example of .....

• Effusion

• diffusion

• density

• pressure

which gas is produced in rotten egg

• hydrogen

• hygrogen oxide

• hydrogen sulphide

• hydrogen disulphide

leaking of gas mlecules through a small hole is an example of...

• pressure

• density

• effusion

• diffusion

SI unit of pressure is

• mmHg

• torr

• atm

• pascal

which statement is correct

• pascal is larger unit

• 1 pascal is equal to 1kPa

• 1atm = 101.325kPa

• 1Pa = 2atm

volume of gas decreases by increasing

• density

• pressure

• temperature

• both pressure and temperature

which statement is true about gases

• not easily compressible

• fill entire available space

• high density

• can't exert pressure

1 atm =

• 760torr

• 760mmHg

• 1.01325Pa

• all above

density of a gas ___________ with increase in temperature

• increase

• decrease

• same

• no effect

density of oxygen at 0⁰ C is

• 1.6g/dm³

• 1.5g/dm³

• 1.4g/dm³

• 1.7g/dm³