Class 11

1. Some basic concepts of chemistry question bank (Chemistry)

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Q1.

Mass of 1 mole of nitrogen atoms is:

(A)

28 g

(B)

14.0 g

(C)

28 amu

(D)

14 amu

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Q2.

The volume of a gas in discharge tube is
\( 1.12 \times 10^{-7} \) mL at STP. Then the number of molecules of gas in the tube is:

(A)

\( 3.01 \times 10^4 \)

(B)

\( 3.01 \times 10^{15} \)

(C)

\( 3.01 \times 10^{12} \)

(D)

\( 3.01 \times 10^{16} \)

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