Acids, Bases, and Light Phenomena Quiz

Which of the following is a strong acid?

• Acetic acid

• Hydrochloric acid

• Citric acid

• Formic acid

What is the pH value of a neutral solution?

• 0

• 7

• 5

• 14

Which of the following substances is a base?

• Lemon juice

• Vinegar

• Sodium hydroxide

• Carbonic acid

Litmus turns red in which type of solution?

• Basic

• Acidic

• Neutral

• None of these

What is the chemical formula of sulfuric acid?

• HCl

• H₂SO₄

• HNO₃

• CH₃COOH

Which base is commonly used in soap making?

• Calcium hydroxide

• Magnesium hydroxide

• Sodium hydroxide

• Ammonium hydroxide

What happens when an acid reacts with a metal?

• It produces salt and hydrogen gas.

• It produces salt and oxygen gas.

• It produces only water.

• It produces carbon dioxide.

What is the pH range of acidic solutions?

• 7 to 14

• 0 to 7

• 8 to 14

• 6 to 7

Which gas is evolved when a metal carbonate reacts with an acid?

• Hydrogen

• Oxygen

• Carbon dioxide

• Chlorine

Baking soda is chemically known as:

• Sodium bicarbonate

• Sodium carbonate

• Sodium hydroxide

• Calcium carbonate