CLASS: X NCERT (CBSE)
SCIENCE
Acids, Bases and Salts
Question (1): The characteristic properties of an acid is
due to the presence of ___________.
1. hydride ions
2. hydroxyl ions
3. hydronium ions
4. oxide ions
Ans: 3
Question (2): A strong acid in solution is ___________.
1. mostly molecules
2. mostly ions
3. both molecules and ions
4. mostly water
Ans: 2
Question (3): A weak acid in solution is ___________.
1. mostly molecules
2. mostly ions
3. both molecules and ions
4. less water
Ans: 3
Question (4): The pH of a carbonated drink is ___________.
1. less than 7
2. more than 7
3. equal to 7
4. approximately 7.8
Ans: 1
Question (5): An acid is ___________.
1. a proton donor
2. a proton acceptor
3. electron donor
4. electron acceptor
Ans: 1
Question (6): The drying of milk of lime (white washing) is due to the action of ___________.
1. oxygen in air
2. nitrogen in air
3. CO2 in air
4. hydrogen in air
Ans: 3
Question (7): A salt derived from a strong base and a weak acid will give a salt that is _______.
1. acidic
2. basic
3. neutral
4. volatile
Ans: 2
Question (8): When litmus is added to a solution of borax it turns___________.
1. red
2. pink
3. remains colourless
4. blue
Ans: 4
Question (9): Which of the following is not a mixed salt?
1. K.Ca.PO4
2. Ca(OCl)Cl
3. Na.K.CO3
4. KCl
Ans: 4
Question (10): Which is a soluble base in water?
1. Fe(OH)3
2. Cu(OH)2
3. Zn(OH)2
4. NaOH
Ans: 4
Question (11): Which of the following is a weak base?
1. NaOH
2. KOH
3. NH4OH
4. Ca(OH)2
Ans: 3
Question (12): Choose the acid salt from the following:
1. NaNO3
2. Na2SO4
3. NaHSO4
4. Na2CO3
Ans: 3
Question (13): In the following reaction, identify the products
1. sodium chloride and water
2. water and carbon dioxide
3. sodium carbonate, carbon dioxide and water
4. sodium chloride, carbon dioxide and water
Ans: 4
Question (14): In the following reaction, identify the salt formed
1. NH4NO3
2. (NH4)2SO4
3. (NH4)3PO4
4. (NH4)2S
Ans: 2
Question (15): Which of the following ionic species exist in a neutralization reaction?
1. HCl-
2. H+
3. H2O
4. H3O+
Ans: 4
