Which of the following is a Bronsted acid ?
(i) `HCN` , (ii) `H_(2)PO_(4)^(-)`
(iii) `NH_(4)^(+)` , (iv) `HCI`

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 molecules are homoatomic ? (i) H_(2)O , (ii) O_(3) , (iii) NH_(3) , (iv) Cl_(2)

Which of the following can act both as Bronsted acid and Bronsted base? (i) HCO_(3)^(-) (ii) NH_(3) (iii) O^(2-) (iv) HCl

Which of the following are Lewis acids ? (i) H_2O , (ii) BF_3 , (iii) H^+ , (iv) NH_4^+

Which of the following can act as both Bronsted acid and a Bronsted base? i) HCOO^(-) ii) NH_(2) iii) NH_(3) Iv) HSO_(4)^(-)

Which of the following are not ionic compound/ (i) KCI (ii) HCI (iii) CCI_(4) (iv) NaCI

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