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Acids, Bases and Salts

A dry pellet of a common base B, when kept in open absorbs moisture and turns sticky. The compound is also a by–product of chloralkali process. Identify B. What type of reaction occurs when B is treated with an acidic oxide? Write a balanced chemical equation for one such solution.

06/11/2024

Science

10th

Acids, Bases and Salts

A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at anode during electrolysis of brine is passed on dry Y, it gives a compound Z, used for disinfecting drinking water. Identity X, Y, G and Z

06/11/2024

Science

10th

Acids, Bases and Salts

For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake,
(a) how will it affect the taste of the cake and why?
(b) how can baking soda be converted into baking powder?
(c) what is the role of tartaric acid added to baking soda?

06/11/2024

Science

10th

Acids, Bases and Salts

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.

06/11/2024

Science

10th

Acids, Bases and Salts

What are strong and weak acids? In the following list of acids, separate strong acids from weak acids.
Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.

06/11/2024

Science

10th

Acids, Bases and Salts

Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify A, B and C.

06/11/2024

Science

10th

Acids, Bases and Salts

How would you distinguish between baking powder and washing soda by heating?

06/11/2024

Science

10th

Acids, Bases and Salts

A student prepared solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless, how will she distinguish between the two?

06/11/2024

Science

10th

Acids, Bases and Salts

What happens when nitric acid is added to egg shell?

06/11/2024

Science

10th

Acids, Bases and Salts

Name the acid present in ant sting and give its chemical formula.
Also give the common method to get relief from the discomfort caused by the ant sting.

06/11/2024

Science

10th