1046: A girl is swinging on a swing in sitting position. When the same girl stands up, the period of swing will
(a) be shorter
(b) be longer
(c) depend on the height of the girl
(d) not change
1047: Unit of distance used in navigation is:
(a) Nautical mile
(b) Kilometre
(c) Light year
(d) Yard
1048: Which one among the following is called philosopher's wool?
(a) Zinc oxide
(b) Zinc chloride
(c) Zinc nitrate
(d) Zinc bromide
1049: Which one of the following is not an instrument of selective credit control in India ?
(a) Regulation of consumer credit
(b) Rationing of credit
(c) Margin requirements
(d) Variable cost reserve ratios
1050: All India Services can be created by the:
(a) President
(b) U.P.S.C.
(c) Prime Minister
(d) Parliament