(A) Gamma rays
(B) X-rays
(C) Microwaves
(D) Gas welding

(A) Combustion with air
(B) Gravitational pull by earth
(C) Friction with earth’s atmosphere
(D) Loss in weight of the satellite

(A) Period increases
(B) Period decreases
(C) Group increases
(D) Both ‘b’ & ‘c’

(A) 768
(B) 908
(C) 1400
(D) 1539

(A) 0.03
(B) 0.3
(C) 0.8
(D) 1.5

(A) Lower melting temperature
(B) Same melting temperature
(C) Same composition
(D) Both ‘b’ & ‘c’

(A) Cyaniding
(B) Sherardizing
(C) Spheroidising
(D) None of these

(A) Burning
(B) Intensive oxidation
(C) Evaporation
(D) None of these