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1.  The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
Answer & Explanation
Answer: Option C
2.  The number of moles of solute present in 1 kg of a solvent is called its
A. molalityB. molarity
C. normalityD. formality
Answer & Explanation
Answer: Option A
3.  The most electronegative element among the following is
A. sodiumB. bromine
C. fluorineD. oxygen
Answer & Explanation
Answer: Option C
4.  The metal used to recover copper from a solution of copper sulphate is
A. NaB. Ag
C. HgD. Fe
Answer & Explanation
Answer: Option D
5.  The 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)
Answer & Explanation
Answer: Option D
6.  The metallurgical process in which a metal is obtained in a fused state is called
A. smeltingB. roasting
C. calcinationsD. froth floatation
Answer & Explanation
Answer: Option A

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