Question

Explain the following in one or two lines
1) A cup of cold milk turn warm when kept out of refrigerator.
2) Pressure cookers are provided with Bakelite handles.
3) Water is generally heated from below.
4) In the kitchen exhaust fans are placed near the roof.
5) We feel hot when we stand near the fire.
6) The fire fighting suits are always bright and shiny.
7) Freezers are placed at top of refrigerators.
8) Gunny bags are used to prevent melting of ice.
9) Two thin blankets are better than one thick one.
10) Thick sweaters with larger holes are warmer than those knitted with thin wool .
11) Mud houses with thatched roofs keep cool in summers.
12) We prefer light coloured clothes during summers and dark coloured clothes
during winters.

Answer 1

) We prefer light coloured clothes during summers and dark coloured clothes

during winters.

You have 9 balls,equally big,equally heavy-except for one, which is a little heavier.How would you identify the heavier ball if you could use a pair of balance scales only twice?

Answer 2

The freezer which is situated at the top had the lowest temperature compared to other components. ... So the hotter air current from the bottom will rise up to the freezer part and the hot air current gets cooled down due to the freezer.