Class 10 Practice - Level 1 - Acids, Bases and Salts

Total questions: 40

What is the pH range of a basic solution?

Topic: pH of Bases

0 to 6

7 to 14

1 to 7

0 to 7

None

Which base is commonly used in baking?

Topic: Uses of Bases

Sodium hydroxide

Potassium hydroxide

Sodium bicarbonate

Calcium hydroxide

None

Which of the following is true for the solution of a salt formed by a strong acid and a strong base?

Topic: Nature of Salt Solutions

Acidic

Basic

Neutral

Depends on the concentration

None

What is the chemical formula of sodium hydroxide?

Topic: Chemical Formula of Bases

NaCl

NaOH

KOH

$ \displaystyle Ca{{\left( {OH} \right)}_{2}}$

None

What is the pH range of an acidic solution?

Topic: pH of Acids

0 to 6

7 to 14

8 to 14

1 to 7

None

Which salt is used in cooking?

Topic: Uses of Salts

Sodium carbonate

Sodium chloride

Sodium bicarbonate

Sodium sulphate

None

What happens to the pH of water when a few drops of concentrated hydrochloric acid are added?

Topic: Effect on pH of Water

pH increases

pH decreases

pH remains the same

Water becomes neutral

None

Which type of reaction is represented by the equation: HCl + NaOH → NaCl + H₂O?

Topic: Types of Reactions

Decomposition

Neutralization

Displacement

Redox

None

Which of the following is an example of a mineral acid?

Topic: Identification of Acids

Acetic acid

Citric acid

Hydrochloric acid

Lactic acid

None

10.

Which of the following is a common base found in household cleaners?

Topic: Common Bases

Sodium chloride

Sodium hydroxide

Sodium bicarbonate

Sodium sulphate

None

11.

What is formed when a base reacts with an acid?

Topic: Acid-Base Reactions

Salt only

Water only

Salt and water

Gas and water

None

12.

Which of the following is used to measure the pH of a solution?

Topic: Indicators

Litmus paper

pH meter

Phenolphthalein

Methyl orange

None

13.

Which of the following acids is found in the stomach?

Topic: Properties of Acids

Acetic acid

Hydrochloric acid

Citric acid

Lactic acid

None

14.

Which of the following is a characteristic of a base?

Topic: Chemical Reactions

Sour taste

Turns blue litmus red

Slippery to touch

Reacts with carbonates to produce carbon dioxide

None

15.

What happens when a base is diluted with water?

Topic: Dilution of Bases

pH increases

pH decreases

pH remains the same

Neutralization occurs

None

16.

What is the chemical formula of sodium chloride?

Topic: Chemical Formula of Salts

NaCl

NaOH

Na₂CO₃

NaHCO₃

None

17.

What is produced when a metal reacts with an acid?

Topic: Reaction with Acids

Salt and water

Salt and hydrogen gas

Water and hydrogen gas

Salt and carbon dioxide

None

18.

What is the approximate pH of lemon juice?

Topic: pH of Common Substances

None

19.

Which gas is produced when an acid reacts with a carbonate compound?

Topic: Reaction with Carbonates

Oxygen

Hydrogen

Carbon dioxide

Nitrogen

None

20.

Which indicator turns red in an acidic solution?

Topic: Indicators

Phenolphthalein

Methyl orange

Bromothymol blue

Litmus

None

21.

Which solution has a pH less than 7?

Topic: Acidic and Basic Solutions

Sodium hydroxide solution

Ammonium hydroxide solution

Vinegar

Soap solution

None

22.

What is the product of a neutralization reaction?

Topic: Neutralization Reaction

Only salt

Only water

Salt and water

Acid and base

None

23.

Which of the following is a property of acids?

Topic: Properties of Acids

They turn blue litmus red.

They turn red litmus blue.

They are slippery to touch.

They do not conduct electricity.

None

24.

Which substance will turn red litmus paper blue?

Topic: Properties of Bases

Vinegar

Lemon juice

Baking soda solution

Orange juice

None

25.

Which acid is found in tomatoes?

Topic: Common Acids in Foods

Lactic acid

Acetic acid

Tartaric acid

Oxalic acid

None

26.

What is the pH value of pure water?

Topic: pH Scale

None

27.

What is the chemical formula of hydrochloric acid?

Topic: Chemical Formula of Acids

$ \displaystyle {{H}_{2}}S{{O}_{4}}$

$ \displaystyle HN{{O}_{3}}$

$ \displaystyle HCl$

$ \displaystyle C{{H}_{3}}COOH$

None

28.

Which of the following salts is used in the food industry as a preservative?

Topic: Salts

Sodium chloride

Sodium bicarbonate

Sodium benzoate

Sodium hydroxide

None

29.

Which of the following is a natural source of citric acid?

Topic: Common Acids

Apple

Banana

Lemon

Grapes

None

30.

Which gas is produced when acids react with metals?

Topic: Reaction with Metals

Oxygen

Hydrogen

Carbon dioxide

Nitrogen

None

31.

Which acid is commonly used in car batteries?

Topic: Uses of Acids

Hydrochloric acid

Sulfuric acid

Acetic acid

Citric acid

None

32.

What should be done if acid spills on your skin?

Topic: Safety Precautions

Wash with soap

Wash with vinegar

Wash with plenty of water

Apply baking soda

None

33.

What happens when an acid is diluted with water?

Topic: Dilution of Acids

pH increases

pH decreases

pH remains the same

Neutralization occurs

None

34.

Which of the following is a weak acid?

Topic: Strong and Weak Acids

Hydrochloric acid

Sulfuric acid

Acetic acid

Nitric acid

None

35.

Which of the following is a natural indicator?

Topic: Indicators

Methyl orange

Phenolphthalein

Litmus

Bromothymol blue

None

36.

What is the effect of adding a small amount of a strong acid to water?

Topic: </strong Effect on pH

Increase in pH

Decrease in pH

No change in pH

Neutralization
None

37.
Which of the following is a common base used in soap making?

Topic: Common Bases

Hydrochloric acid

Sulfuric acid

Sodium hydroxide

Nitric acid
None

38.
What gas is produced when an acid reacts with a carbonate?

Topic: Strong and Weak Bases

Oxygen

Hydrogen

Carbon dioxide

Nitrogen
None

39.
Which indicator turns pink in a basic solution?

Topic: Common Indicators

Litmus

Phenolphthalein

Methyl orange

Bromothymol blue
None

40.
Which of the following is a weak base?

Topic: Strong and Weak Bases

Sodium hydroxide

Potassium hydroxide

Ammonium hydroxide

Calcium hydroxide
None

1 out of 40

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Class 10 Practice - Level 1 - Acids, Bases and Salts

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