General Science Question Answer

Q121. Rate of growth of a plant is measured by
(a) auxanometer
(b) hygrometer
(c) photometer
(d) None of the above

Q122. Which is the smallest flower in the world
(a) Duckweed
(b) Wolffia
(c) Rafflesia
(d) None of the above

Q123. Isobaths are used to show measure _______
(a) depth
(b) pressure
(c) rainfall
(d) snowfall

Q124. In which layer do Auroras [e.g. Northern lights) occur
(a) Exosphere
(b) Mesosphere
(c) Stratosphere
(d) Thermosphere

Q125. Which of the following material is used to make control rods in a nuclear reactor
(a) Iron
(b) Sodium
(c) Cadmium
(d) Potassium

Q126. Which worm most commonly causes anaemia in children
(a) Earth Worm
(b) Round Worm
(c) Tape Worm
(d) Hook Worm

Q127. White gold is an alloy containing about _____ gold
(a) 20%
(b) 45%
(c) 60%
(d) 75%

Q128. The radioactive element used in heart-pacemakers is
(a) Uranium
(b) Deuterium
(c) Plutonium
(d) Radium

Q129. The coldest region of atmosphere is
(a) Stratosphere
(b) Troposphere
(c) Thermosphere
(d) Mesosphere

Q130. Maximum reservoir of carbon dioxide is found in
(a) Forest
(b) Oceans
(c) Landmass
(d) Atmosphere

Q131. The isotope of carbon used in radiocarbon dating is
(a) C-12
(b) C-13
(c) C-14
(d) C-15

Q132. Which ray is very helpful in long distance photography
(a) Cosmic ray
(b) Ultraviolet ray
(c) Infrared ray
(d) Gamma ray

Q133. Which one is the lightest metal
(a) Lithium
(b) Aluminium
(c) Mercury
(d) Platinum

Q134. Detritus food chain starts from
(a) Plants
(b) Insect
(c) Grass
(d) Dead organic materials

Q135. Energy flow in an ecosystem is always
(a) Unidirectional
(b) Bidirectional
(c) Multidirectional
(d) Circular

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