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Q. The property of a substance to absorb moisture from the air on exposure is called
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Q. Iron filings can be separated from a heterogenous mixture using the technique of:
Q. A catalyst is a substance which
Q. The major use of sulphur is in the manufacture of
Q. The group of metals Fe, Co, Ni may best called as:
Q. The presence of ozone in the stratosphere is responsible for
Q. When light rays travel from a rarer medium to denser medium it is refracted
Q. If the magnetic flux linked with a coil varies at the rate of 1 Wb/min, the induced e.m.f. Is :
Q. Which of the following shows that the Earth behaves as a magnet ?
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