HARD
10th Assam Board
IMPORTANT
Earn 100

You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels. 
 

Important Questions on Acids, Bases and Salts

EASY
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2018>Q 1
A solution turns red litmus blue. Its pH is likely to be
EASY
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2018>Q 2
What is the common name of the compound CaOCl2?
MEDIUM
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2018>Q 3

What is the chemical name of baking soda? How is it produced? Give chemical equation. 

MEDIUM
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2019>Q 4
A solution reacts with crushed egg cells to give a gas that turns lime water milky. The solution contains-
MEDIUM
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2019>Q 5
What is neutralisation reaction? Give two examples.
MEDIUM
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2019>Q 6
You have been provided with three test tubes. One of them contains distilled water and the other two contains an acidic solution and basic solution respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
EASY
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2019>Q 7

Pratyush took sulphur powder on a spatula and heated it. He collected the evolved by inverting a test tube over it. What will be the action of gas on the following?

Dry litmus paper.

EASY
10th Assam Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 2 - Acids, Bases and Salts>assam board-2019>Q 8

Pratyush took sulphur powder on a spatula and heated it. He collected the evolved by inverting a test tube over it. What will be the action of gas on the following?

Moist litmus paper.