What is the process of separation of a mixture of soil from water by using filterpaper called?
sedimentation
decantation
distillation
filtration
What is as important as air for our survival?
heat
light
water
cloth
What do we use to store drinking water?
water filter
water cooler
water heater
water tank
Which is the fifth layer of the atmosphere?
exosphere
thermosphere
troposphere
stratosphere
Which of the following present in air is needed for burning?
oxygen
hydrogen
nitrogen
carbondioxide
Which is the purest form of water?
filtered water
distilled water
sedimented water
cold water
Which one of the following is an important gas for plants?
argon
chlorine
When do we say the air has low humidity?
wet
dry
cloudy
dust
What is needed for cooking, bathing, working and construction work?
food
Which is the second layer of the atmosphere?
Troposphere
Stratosphere
Mesosphere
Exosphere
