Coal gas contains
(i) `CO` , (ii) `H_(2)`
(iii) `CH_(4)` , (iv) `CO_(2)`

Which of the following were called permanent gases ? (i) H_(2) , (ii) O_(2) (iii) N_(2) , (iv) CH_(4)

Write conjugate acids of (i) CO_(3)^(2-) (ii) H_(2)O (iii) OH^(-) (iv) HSO_(4)^(-) .

Which of the following in each pair has larger bond angle (i) CO_(2) , BF_(3) (ii) H_(2)O, H_(2)S (iii) CH_(4), C_(2)H_(2)

Correct set of species with zero dipole moment is : (i) CO_(2) " " (ii) COCl_(2) " " (iii) CH_(2)Cl_(2) " " (iv) BCl_(3)

Correct set of species with zero dipole moment is : (i) CO_(2) " " (ii) COCl_(2) " " (iii) CH_(2)Cl_(2) " " (iv) BCl_(3)

Correct set of species with zero dipole moment is : (i) CO_(2) " " (ii) COCl_(2) " " (iii) CH_(2)Cl_(2) " " (iv) BCl_(3)

Give balanced equation to obtain (i) H_(2) (ii) CO_(2) (iii) SO_(2) (iv) H_(2)S from dil HCl.

Calculate the molar mass of the following: (i) H_(2)O , (ii) CO_(2) , (iii) CH_(4)