Match List-I with List-II:

The maximum number of atoms is present in which of the following -

1. 1 g of Mg_(s)  

2. 1 g of O_{2 (g)}

3. 1 g of Li_(s)    

4. 1 g of Ag_(s)   

One mole of carbon atom weights 12 g, the number of atoms in it is equal to:
(Mass of carbon – 12 is $1.9926\times {10}^{-23}$ $g$)

1. $1.2\times {10}^{23}$

2. $6.022\times {10}^{22}$

3. $12\times {10}^{22}$

4. $6.022\times {10}^{23}$

If Avogadro number \(N_{A}\), is changed from$\mathrm{}$ \(6 . 022 \times \left(10\right)^{23}\)\(\text{mol}^{- 1}\) to \(6 . 022 \times \left(10\right)^{20} ~\text{mol}^{- 1}\) this would change:

The number of water molecules is maximum in?

A mixture of gases contains H₂ and O₂ gases in the ratio of 1 : 4 (w/w). The molar ratio of the two gases in the mixture will be: