Q. The number of moles of solute present in 1 kg of a solvent is called its
? Molality
Q. The most electronegative element among the following is
? Fluorine
Q. The metal used to recover copper from a solution of copper sulphate is
? Fe
Q. The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
? p-electrons in CI(Z = 17)
Q. The metallurgical process in which a metal is obtained in a fused state is called
? Smelting
Q. The molecules of which gas have highest speed ?
? H2 at -73oC
Q. The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is
? Henry’s law
Q. The gas present in the stratosphere which filters out some of the sun’s ultraviolet light and provides an effective shield against radiation damage to living things is
? Ozone
Q. The most commonly used bleaching agent is
? Chlorine
Q. The nucleus of a hydrogen atom consists of
? 1 proton only
Q. The heat required to raise the temperature of body by 1 K is called
? Thermal capacity
Q. The nuclear particles which are assumed to hold the nucleons together are
? Mesons
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