Acids, Bases and Salts Class 10 MCQ Quiz – Test Your Knowledge!

Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?

The graph given below depicts a neutralization reaction (acid + base → salt + water). The pH of a solution changes as we add an excess of acid to an alkali.

Which letter denotes the area of the graph where both acid and salt are present?

In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus was set up.

Which among the following statement(s) is/are correct?

1. The bulb will not glow because the electrolyte is not acidic.
2. The bulb will glow because NaOH is a strong base and furnishes ions for conduction.
3. The bulb will not glow because the circuit is incomplete.
4. The bulb will not glow because it depends upon the type of electrolytic solution.

A solution of a base with pH 12.1 is given.

Which of the following can be done to decrease its pH?

1. Add distilled water to it.
2. Add a solution of a different base with pH 8.7
3. Add a few drops of an acid with an unknown pH

Assertion (A): While dissolving an acid in the water, the water must always be added slowly to the acid with constant stirring.

Reason (R): Dissolving an acid in water is a highly exothermic reaction.

Which of the following are correctly matched?

Some activities cause the soil and water resources in that area to become acidic. Once these activities are stopped, the land has to be treated to enable plants to grow once again.

Which of the following should be added to the land to decrease the acidity permanently and allow plants to grow once again?

Match the chemical substances given in column A with their appropriate application given in column B.

In a very polluted city, water from the first rain in the monsoon season is collected in a beaker. Which of the following changes will it have on a litmus paper?

Identify the basic salt from the following salts:

The yellow color of turmeric changes to red on addition of soap solution. When substance P is added to turmeric, there is no change in color.

Which of the following is definitely true about substance P?

The reaction between MnO₂ with HCl is depicted in the following diagram. It was observed that a gas with bleaching abilities was released.

The chemical reaction between MnO₂ and HCl is an example of:

Mild non-corrosive basic salt is

Which of the following are correctly matched?

Assertion (A): Fresh milk in which baking soda is added, takes a longer time to set as curd.

Reason (R): Baking soda decreases the pH value of fresh milk to below 6.