| 31. | The pH of milk is |
A. 6.1 | |
B. 6.6 | |
C. 7.4 | |
D. 8 |
| 32. | Hydrochloric acid is stronger than acetic acid because |
A. It has less number of hydrogen ions | |
B. It ionizes completely to produce H+ ions. | |
C. contains chlorine | |
D. it contains oxygen |
| 33. | Salts which are derived from acidic hydrogen atom or hydroxyl ion are called |
A. common salt | |
B. acid salts | |
C. caustic salts | |
D. mixed salt |
| 34. | Which of the following is not a normal salt? |
A. Na₂SO₄ | |
B. NaHSO₄ | |
C. NaPO₄ | |
D. CaSO₄ |
| 35. | An example of a complex salt is – |
A. K₄[Fe(CN)₆] | |
B. K₂[HgI₄] | |
C. [Ag(Small)₂]CI | |
D. all of these |
| 36. | Mohr’s salt is |
A. simple salt | |
B. hybrid salts | |
C. Divalent salts | |
D. complex salts |
| 37. | Match List-I with List-II and select the correct answer from the code given below the lists : List-I A. Common salt B. Acidic salt C. Alkaline salt D. Double salt List-II 1. Alum ( alum) 2 .barium chloride 3. sodium bicarbonate 4. ferric hydroxide |
A. A → 3, B → 2, C → 4, D → 1 | |
B. A → 2, B → 3, C → 4, D → 1 | |
C. A → 2, B → 3, C → 1, D → 4 | |
D. A → 1, B → 2, C → 3, D → 4 |
| 38. | common salt solution in water |
A. Natural molecules of sodium and chlorine | |
B. Negative ions of sodium and positive ions of chlorine | |
C. positive ions of sodium and negative ions of chlorine | |
D. sodium chloride molecule |
| 39. | Who was the first to say that hydrogen is an essential component of all acids? |
A. arrhenius | |
B. braunsted | |
C. Die | |
D. lorry |
| 40. | The one which absorbs salts is called |
A. hygroscopic salts | |
B. anhydrides salt | |
C. hydrophilic salts | |
D. hydrophobic salts |