Questions in chemical-aritmatic

Select	Question
	The number of significant figures in \[6.02 \times {10^{23}}\]is
	The prefix zepto stands for
	The significant figures in 3400 are
	The number of significant figures in 6.0023 are
	Given \[P = 0.0030m\], \[Q = 2.40m\], \[R = 3000m\], Significant figures in \[P,\,Q\] and \[R\] are respectively
	The number of significant figures in 60.0001 is
	A sample was weighted using two different balances. The results were (i) 3.929 g (ii) 4.0 g. How would the weight of the sample be reported
	Which of the following pairs of substances illustrate the law of multiple proportions
	1.0 g of an oxide of A contained 0.5 g of A. 4.0 g of another oxide of A contained 1.6 g of A. The data indicate the law of
	Among the following pairs of compounds, the one that illustrates the law of multiple proportions is