Match List-I with List-II and select the correct option (Based on mole concept):

List-I		List-II
(a)	$2$ moles of ethene	(i)	$11.2$ L volume at STP
(b)	Mass is equal to $66$ g	(ii)	$56$ g
(c)	$1$ g of $\text{H}_2$	(iii)	$12.04 \times 10^{23}$ Molecules
(d)	$2$ moles of water vapours	(iv)	$1.5$ mole of $\text{CO}_2$

From the given information, select the suitable law of chemical combination:

Cupric Carbonate	% of Cu	% of C	% of O
Natural Sample	51.35	9.74	38.91
Synthetic Sample	51.35	9.74	38.91

Which of the following methods of expressing concentration are unitless?

Select the INCORRECT statement/s from the following:

(a) 22 books have infinite significant figures

(b) In the answer of calculation $2.5 \times 1.25$ has four significant figures,.

(c) Zero's preceding to first non-zero digit are significant

(d) In the answer of calculation $12.11+18.0+1.012$ has three significant figures