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The most reactive among the halogens is
Which one of the following fuels causes minimum environmental pollution ?
Which one of the following has the highest fuel value ?
The alpha particle carries two positive charges. Its mass is very nearly equal to that of
Which one of the following polymers is widely used for making bullet proof material ?
The chemical used as a 'fixer ' in photography is
Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torchlights,electric shavers etc. ?
which one of the following is a mixed fertilizer
The main constituent gas of LPG is —
Which one of the following is the correct sequence of the given substances in the decreasing order of their densities ?
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