hello, I have several general questions for chemistry, will you help me a

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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

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2.

The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality

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3.

The most electronegative element among the following is
A. sodium
B. bromine
C. fluorine
D. oxygen

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4.

The metal used to recover copper from a solution of copper sulphate is
A. Na
B. Ag
C. Hg
D. Fe

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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)

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6.

The metallurgical process in which a metal is obtained in a fused state is called
A. smelting
B. roasting
C. calcinations
D. froth floatation

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