Which of the following solvents are aprotic ?
`(1) NH_(3)" "(2)SO_(2)`
`(3) CH_(3)CN" "(4)CH_(3)CO_(2)H`

Explain the order of basicity of the following compounds : (a) CH_(3) - CH_(2) - NH_(2) " " (b) CH_(3) - CH = N -H (c) CH_(3) - CH_(2) - CN

Which of the following is a Bronsted base ? (i) NH_(3) , (ii) CH_(3)NH_(2) (iii) HCO_(3)^(-) , (iv) SO_(4)^(2-)

Which of the following is a gas at room temperature ? CH_(3)NH_(2) (ii) CH_(3)CH_(2)NH_(2) (iii) (CH_(3))_(2) (iv) (CH_(3))_(3)N

Which molecule is polar in each of the following pairs ? (i) HF, F_(2)" (ii) "CO_(2), H_(2)O (iii) n_(2),NH_(3)" (iv) "CH_(4),CH_(3)Cl.

Which of the following cannot act as a ligand? NH_(3),CH_(4),CO, H_(2)O

(i) State the formula and name the conjugate base of each of the following species : (a) H_(3)O^(+) (b) HSO_(4)^(-) (C ) NH_(4)^(+) (d) HF (e ) CH_(3)COOH (f) CH_(3)NH_(3)^(+) (g) H_(3)PO_(4)(h)H_(2)PO_(4)^(-). (ii) State the formula and name the conjugate acid of each of the following species : (a) OH^(-) (b) HPO_(4)^(2-) (C) H_(2)PO_(4)^(-) (d) CH_(3)NH_(2) (e) CO_(3)^(2-) (f) NH_(3)(g) CH_(3)COO^(-) (h) HS^(-)