Acids Bases And Salts Quiz

1. What is Universal Indicator?

A type of musical instrument.

A device used to measure temperature.

A chemical used to preserve food.

A mixture ofindicators that havedifferent colours insolutions of different PH

Universal Indicator is a mixture of indicators that change color depending on the pH of a solution, making it a useful tool in determining the acidity or basicity of a substance.

Explanation

Universal Indicator is a mixture of indicators that change color depending on the pH of a solution, making it a useful tool in determining the acidity or basicity of a substance.

2. What is Methyl Orange?

A type of fruit found in tropical regions.

An acid-base indicator that is red in acidic and yellow in alkaline solutions

A new type of smartphone with orange-colored casing.

A type of orange-flavored soda popular in Japan.

Methyl Orange is commonly used in chemistry as an acid-base indicator to determine pH levels in a solution. It turns red in acidic conditions and yellow in alkaline conditions.

Explanation

Methyl Orange is commonly used in chemistry as an acid-base indicator to determine pH levels in a solution. It turns red in acidic conditions and yellow in alkaline conditions.

3. What is a weak alkali?

An acid that is partially dissociated into ions in water

An alkali that is fully dissociated into ions in water

A neutral substance with no dissociation in water

An alkali that is only partially dissociated into ions in water - usually this produces a low concentration of OH-(aq) in the solution, for example, ammonia solution.

A weak alkali is one that does not fully dissociate into ions in water, leading to a low concentration of hydroxide ions in the solution. This is in contrast to a strong alkali or acid that completely dissociates in water, and a neutral substance that does not dissociate at all.

Explanation

A weak alkali is one that does not fully dissociate into ions in water, leading to a low concentration of hydroxide ions in the solution. This is in contrast to a strong alkali or acid that completely dissociates in water, and a neutral substance that does not dissociate at all.

4. What does the term 'corrosive' refer to?

A type of electrical current

A type of renewable energy source

A type of weathering process

Corrosive Substance (an acid, for example) is one that can dissolve or 'eat away' at other materials (wood, metals, or human skin, for instance)

The term 'corrosive' specifically refers to substances that can dissolve or 'eat away' at other materials, such as wood, metals, or human skin.

Explanation

The term 'corrosive' specifically refers to substances that can dissolve or 'eat away' at other materials, such as wood, metals, or human skin.

5. What is a base?

A substance that is a type of acid.

A substance that intensifies the acidity of a solution.

A substance that neutralises an acid, producing gas as the only product.

A substance that neutralises and acid, producing salt and water as the only products; in their reactions bases act as proton acceptors.

Bases are substances that can accept protons, whereas acids donate protons. When a base neutralizes an acid, the result is the formation of salt and water, with no gas being produced. Bases do not intensify acidity or function as a type of acid.

Explanation

Bases are substances that can accept protons, whereas acids donate protons. When a base neutralizes an acid, the result is the formation of salt and water, with no gas being produced. Bases do not intensify acidity or function as a type of acid.