(21) ‘IC chips’ for computers are usually made of
(a) Silicon
(b) Chromium
(c) Gold
(d) Lead
(22) In case of cardiac arrest, what should be the most primary step?
(a) Mouth to mouth respiration
(b) To cell a doctor
(c) Cardiac massage
(d) None of the above
(23) Of the following commonly used materials, the one that is not an alloy is
(a) Steel
(b) Copper
(c) Brass
(d) Silver
(24) Which of the following is not a parasite?
(a) Louse
(b) Housefly
(c) Mosquito
(d) Tick
(25) In oil wells, oil, water and gas are present in the ascending order
(a) water, gas, oil
(b) oil, gas, water
(c) gas, oil, water
(d) water, oil, gas
(26) What should be given to an athlete for instant energy?
(a) Protein
(b) Fat
(c) Carbohydrate
(d) Vitamin
(27) We get energy directly from
(a) The sun
(b) Ocean
(c) Space
(d) Atmosphere
(28) In which of the following industries is mica used as a raw material?
(a) Toys
(b) Electrical
(c) Iron and Steel
(d) Glass and Pottery
(29) Which one of the following animals does not have a segmented body?
(a) earth worm
(b) Tape worm
(c) Glow worm
(d) Ship worm
(30) Heart pumps only impure blood in case of
(a) Whale
(b) Lizard
(c) Shark
(d) Frog