. Which one of the following crops enriches the nitrogen content in soil? (a) Potato (b) Sorghum (c) Sunflower (d) Pea6 22888
. The greatest diversity of animal and plant species occurs in (a) Temperate deciduous forests (b) Tropical moist forests (c) Heavily polluted rivers (d) Deserts and savannas1 13128
. The colour of an opaque object is due to the colour it (a) Absorbs (b) Refracts (c) Reflects (d) Scatters2 14233
The metal used in storage batteries is 1 Iron 2 Copper 3 Lead 4 Tin5 30644
A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the 1 Pupil 2 Cornea 3 Iris 4 Choroids4 12823
Hemoglobin is dissolved in the plasma of 1 Man 2 Fish 3 Frog 4 Earthworm7 25673
The bats are able to fly in dark since their wings produce 1 Sound waves 2 Ultrasonic waves 3 Infra-red rays 4 Ultraviolet rays2 12187
Which of the following have the highest upper limit of audible range? 1 Human beings 2 Dogs 3 Whales 4 Bats4 9972
The insect not useful to man is 1 Lac insect 2 Rice weevil 3 Silk worm 4 Honey bee4 6828
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