A. Copper
B. Mica
C. Zinc
D. Silver

A. Atom bomb
B. Hydrogen bomb
C. Ordinary bomb
D. Napalm bomb

A. Cosec
B. Cusecs
C. Ergs
D. Dynes

A. Oxidation
B. Reduction
C. Decomposition
D. Sublimation

A. Barometer
B. Manometer
C. Ammeter
D. None of the above

A. 1921
B. 1963
C. 1971
D. 1969

A. 1954
B. 1915
C. 1945
D. 1950

A. 21 July 1969
B. 21 July 1970
C. 21 July 1963
D. 21 July 1972

A. 1904
B. 1905
C. 1908
D. 1909

A. A Russian cosmonaut and became the first man to travel in space.
B. The first person to fly at great height of about 340 km from the earth
C. Both (a) and (b)
D. None of the above