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When pressure is increased, then the melting point of ice:
The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organism is:
Cobalt-60, commonly used in radiation therapy, emits :
In a forest ecosystem, green plants are
Who discovered Electron?
Which of the following will not cause any atmospheric pollution ?
Sound waves having frequency less than 20 Hz are called __________ waves.
Which of the following is chiefly present in LPG?
Which of the following animals is carnivorous?
An instrument used for measuring depth of an ocean is called?
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