Dilute hydrochloric acid is added to sodium carbonate. It is observed that:

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Important Questions on Acids, Bases and Salts

MEDIUM

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 70

On putting a few drops of a liquid on a pH strip, the colour of pH strip changed to green. The liquid is most probably.

HARD

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 71

Which of the following chemical properties are shown by dilute hydrochloric acid?
(i) turns blue litmus red
(ii) turns red litmus blue
(iii) reacts with zinc and a gas is evolved
(iv) reacts with solid sodium carbonate to give brisk effervescence.

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 72

Two test tubes containing 2 mL of dilute HCI are taken. Zinc granules are added to test tube (A) and solid sodium carbonate is added to test tube (B) as shown.

Question Image

The correct observation would be:

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 73

10 ml of HCI and 10 ml of NaOH solutions are taken in two separate beakers labelled I and Il respectively. On adding zinc granules to both, it is observed that at room temperature :

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 74

The correct method of finding pH of the solution is to:

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10th CBSE

IMPORTANT

ESSENTIALS OF CHEMISTRY X>Chapter 2 - Acids, Bases and Salts>Value Based Questions>Q 75

On putting a few drops of an unknown liquid on the pH strip, the colour of the pH strip is changed to violet. This liquid taken is likely to be :

EASY

10th CBSE