Two aqueous solutions P and Q have pH of 5 and 13 respectively. The correct inference is that:

solution P is of CHCOOH and Q is of NaOH

solution P is of HCl and Q is of NHOH

solution P is of CHCOOH and Q is of Ca(OH)

solution P is of HNO and Q is of NHOH

solution P is of CHCOOH and Q is of NaOH

The pH of a solution is 7. How can you increase its pH?

By adding a small amount of base.

By adding a small amount of acid

By adding a small amount of base.

By adding a small amount of salt.

By passing carbon dioxide gas through it.

Which of the following gives the correct increasing order of acidic strength?

Water < Acetic acid < Hydrochloric acid

Water < Hydrochloric acid < Acetic acid

Acetic acid < Water < Hydrochloric acid

Hydrochloric acid < Water < Acetic acid

CBSE Class 10 Science Acids, Bases and Salts Quiz 1

8.

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

Wash the hand with saline solution.

Wash the hand immediately with plenty of water and apply a paste of sodium hydrogencarbonate.

After washing with plenty of water and apply solution of sodium hydroxide on the hand.

Neutralise the acid with a strong alkali.

1.

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

2.

Two aqueous solutions P and Q have pH of 5 and 13 respectively. The correct inference is that:

3.

The pH of a solution is 7. How can you increase its pH?

4.

Sodium carbonate is a basic salt because it is a salt of

5.

Which gas is evolved when acids react with metals?

6.

A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?

7.

Which of the following gives the correct increasing order of acidic strength?

8.

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

9.

Farmers neutralise the effect of acidity of the soil by adding

10.

A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide. She asked them to identify the test tube containing sodium hydroxide solution. Which one of the following can be used for the identification?

Time

1. An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

2. Two aqueous solutions P and Q have pH of 5 and 13 respectively. The correct inference is that:

3. The pH of a solution is 7. How can you increase its pH?

4. Sodium carbonate is a basic salt because it is a salt of

5. Which gas is evolved when acids react with metals?

6. A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?

7. Which of the following gives the correct increasing order of acidic strength?

8. If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

9. Farmers neutralise the effect of acidity of the soil by adding

10. A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide. She asked them to identify the test tube containing sodium hydroxide solution. Which one of the following can be used for the identification?

Time

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1.

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

2.

Two aqueous solutions P and Q have pH of 5 and 13 respectively. The correct inference is that:

3.

The pH of a solution is 7. How can you increase its pH?

4.

Sodium carbonate is a basic salt because it is a salt of

5.

Which gas is evolved when acids react with metals?

6.

A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?

7.

Which of the following gives the correct increasing order of acidic strength?

8.

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

9.

Farmers neutralise the effect of acidity of the soil by adding

10.

A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide. She asked them to identify the test tube containing sodium hydroxide solution. Which one of the following can be used for the identification?