Chemistry - Questions (Section-1)
1The metal used to recover copper from a solution of copper sulphate is
A. NaB. Ag
C. Hg D. Fe
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2The metallurgical process in which a metal is obtained in a fused state is called
A. smeltingB. roasting
C. calcinations D. froth floatation
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3The most electronegative element among the following is
A. sodiumB. bromine
C. fluorine D. oxygen
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4The nucleus of an atom consists of
A. electrons and neutronsB. electrons and protons
C. protons and neutrons D. All of the above
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5The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
A. p-electrons in Ne(Z = 10)B. s-electrons in Mg(Z = 12)
C. d-electrons in Fe(Z = 26) D. p-electrons in CI(Z = 17)
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6The number of moles of solute present in 1 kg of a solvent is called its
A. molalityB. molarity
C. normality D. formality
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