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Q. The tip of the match-stick contains
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Q. Which among the given metals can deposit copper from copper sulphate solution -
Q. Plants receive their nutrients mainly from
Q. Energy is continuously created in the sun due to:
Q. Plants absorb dissolved nitrates from soil and convert them into
Q. Ozone layer above earth’s atmosphere will
Q. A second pendulum is a pendulum whose time period is
Q. Which Poisonous gas is created by incomplete burning of Petrol or diesel in vehicles ?
Q. The product equivalent weight and valency of an element is equal to
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