Day 16: CBSE Class 10 Science

5 questions. Try each one first, then open its answer.

Question 1
Acids, Bases and Salts. Asked 2 times: 2024*, 2026 (* = numbers or wording changed that year)
27 (a) $Explain chlor-alkali process with chemical equation. Name the products formed at anode and cathode.$
Question 2
Acids, Bases and Salts. Asked 2 times: 2023*, 2026 (* = numbers or wording changed that year)
18 $Which of the following compounds is used for removing permanent hardness of water ?$
Tap an option to check your answer.
Question 3
Acids, Bases and Salts. Asked 2 times: 2024*, 2026 (* = numbers or wording changed that year)
25 $Write the preparation of Baking soda. How does it help in making cakes soft and spongy ?$

Question 4

Acids, Bases and Salts. Asked 2 times: 2023*, 2026 (* = numbers or wording changed that year)

\mathrm{NaCl}

Option	Salt	Acid used	Base used	Nature of Salt
(A)	$\mathrm{NaCl}$	$\mathrm{HCl}$	$\mathrm{NaOH}$	Basic
(B)	$\mathrm{Na_2CO_3}$	$\mathrm{H_2CO_3}$	$\mathrm{NaOH}$	Neutral
(C)	$\mathrm{Na_2SO_4}$	$\mathrm{H_2SO_4}$	$\mathrm{NaOH}$	Acidic
(D)	$\mathrm{CH_3COONa}$	$\mathrm{CH_3COOH}$	$\mathrm{NaOH}$	Basic

Tap an option to check your answer.

Question 5
Carbon and its Compounds. Asked 2 times: 2023*, 2026 (* = numbers or wording changed that year)
29 (b) $\mathrm{H_2SO_4}$