9th Chemistry Unit 9 Acids Bases And Salts MCQs Sindh Board

 9th Grade Chemistry Chapter 9 Acids, Bases And Salts Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 9 Acids, Bases And Salts Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

9th Chemistry Sindh Board Notes

Q.1: The substances whose aqueous solution change the blue litmus to red:?

1. Bases
2. Acids
3. Salts
4. Neutral

B

Q.2: The substances having a tendency to lose one or more protons are called:?

1. Salts
2. Bases
3. Acids
4. Neutral

C

Q.3: The substances which donate the pair of electrons for bond formation, is known as:?

1. Acids
2. Bases
3. Salts
4. Neutral

B

Q.4: When equivalent quantities of acid and base are mixed, salt and water are formed, the reactions is termed as:?

1. Neutralization
2. Hydrolysis
3. None of these
4. Hydration

A

Q.5: The acids, which contain one acidic hydrogen are called?

1. Di-protic
2. Tri-protic
3. Mono-protic
4. Poly protic

C

Q.6: The number of acidic hydrogen atoms present in a molecule of an acid is called:?

1. Basicity
2. Hydrolysis
3. Neutral
4. Acidity

A

Q.7: The number of replaceable [OH^-] ions present in a molecule of base is called:?

1. Acidity
2. Neutral
3. Basicity
4. Hydrolysis

A

Q.8: An acid that produces large number of (H⁺) ions in aqueous solution is called:?

1. Weak acid
2. Weak base
3. Strong base
4. Strong acid

D

Q.9: An ionic compound, that is formed when an acid neutralizes a base, is called:?

1. Bases
2. Neutral
3. Salts
4. Acids

C

Q.10: Salts that formed by the reaction of weak acid with srong base are:?

1. Basic
2. Acidic
3. Normal
4. Neutral

B

Q.11: Salts that formed by the reaction of weak acid with strong base are:?

1. Basic
2. Normal
3. Neutral
4. Acidic

A

Q.12: Alums are:?

1. Normal salts
2. Triple salts
3. Double salts
4. Single salts

C

Q.13: The formula of washing soda is.?

1. NaHCO₃
2. Na₂CO₃.6H₂O
3. Na₂CO₃
4. Na₂CO₃. 10H₂O

D

Q.14: All the citrus fruits contain?

1. Butyric acid
2. Ascorbic acid
3. Lactic acid
4. Acetic acid

B

Q.15: All the acids and bases react together to form salt and water, the reaction is called.?

1. Decomposition
2. Synthesis
3. Hydrolysis
4. Neutralization

D

Q.16: According to Arrhenius, a base gives hydroxide OH^- ion in water, while an acid gives?

1. Ammonium ion
2. Metallic ion
3. Hydrogen ion
4. Non metallic

C