Question : A white, and smooth surface is:

Option 1: Good absorber, and a good reflector of heat

Option 2: Bad absorber, and good reflector of heat

Option 3: Good absorber, and bad reflector of heat

Option 4: Bad absorber, and bad reflector of heat

Question : Which of the following branches deals with the interactions of same species of the living organisms with their non-living environment.

Option 1: Autecology

Option 2: Synecology

Option 3: Ecology

Option 4: Palaeontology

Question : To keep warm, polar bears have a layer of _________ under their skin.

Option 1: muscle

Option 2: fat

Option 3: cartilage

Option 4: hair

Question : Ozone layer above the surface of the Earth provides a shield against

Option 1: X- Rays

Option 2: Ultra-violet rays

Option 3: Gamma rays

Option 4: Infra-red Rays

Question : A person sold two items each for INR 42,600. On the first item, he made a loss of 25%, while on the second, he gained 20%. Find his overall percentage gain or loss, giving your answer correct to one place of decimal.

Option 1: 7.7% gain

Option 2: 7.7% loss

Option 3: 8.3% loss

Option 4: 8.2% loss