Question

Match the mass of elements given in column I with the no. of moles given in column II and mark the appropriate choice.

Column -I	Column -II
(A) 28 g of He	(i) 2 moles
(B) 46 g of Na	(ii) 7 moles
(C) 60 g of Ca	(iii) 1 mole
(D) 27 g of Al	(iv) 1.5moles

• A. (A)$\rightarrow$ (iv), (B)$\rightarrow$ (iii), (C)$\rightarrow$ (ii), (D)$\rightarrow$ (i)

• B. (A)$\rightarrow$ (i), (B)$\rightarrow$ (iii), (C)$\rightarrow$ (ii), (D)$\rightarrow$ (iv)

• C. (A)$\rightarrow$ (iii), (B)$\rightarrow$ (ii), (C)$\rightarrow$ (i), (D)$\rightarrow$ (iv)
• D. (A)$\rightarrow$ (ii), (B)$\rightarrow$ (i), (C)$\rightarrow$ (iv), (D)$\rightarrow$ (iii)

Answer 1

(4) : (1) $28gHe = \frac{28}{4} = 7$mol

(2) : $46gofNa = \frac{46}{23} = 2$mol

(3) : $60gofCa = \frac{60}{40} = 1.5$mol

(4) : $27gofAl = \frac{27}{27} = 1$mol