921: Radio carbon dating process is used to know the age of:
(a) Fossils
(b) Plants
(c) Rocks
(d) All of these
922: Dalbergia species is associated with which one of the following ?
(a) Cashew nut
(b) Tea
(c) Coffee
(d) Rosewood
923: In the context of global oil prices. "Brent crude oil" is frequently referred to in the news. What does this term imply?
1. it is a major classification of crude oil.
2. It is sourced from north sea.
3. It does not contain sulphur.
which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
924: Consider the following statements:
1. Animal Welfare Board of India is established under the Environment (Protection) Act, 1986.
2. National Tiger Conservation Authority is a statutory body.
3. National Ganga River Basin Authority is chaired by the Prime Minister.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 2 only
(d) 1, 2 and 3
925: Galvanising of sheet iron is done by dipping the sheet metal into molten
(a) Mercury
(b) Cadmium
(c) Lead
(d) Zinc