MEDIUM
9th Kerala Board
IMPORTANT
Earn 100

The bleaching action of chlorine requires moisture. Give reason.

Important Questions on Non Metals

HARD
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 89
Chemical fertilizers must be banned completely and organic fertilizers must be promoted.
What is your opinion about this argument? Justify your answer
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 90
What are the chemicals required for preparing hydrogen in the laboratory?
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 91
How will you identify that the gas obtained is hydrogen?
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 92
What are the merits of hydrogen when it is used as a fuel?
EASY
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 93
What are the isotopes of hydrogen?
EASY
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 94
Name an isotope of hydrogen which has no neutron.
EASY
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 95
What do you understand by calorific value?
EASY
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 96

Some fuels are given below. Which fuel has the highest calorific value?

Petrol, coal, ethanol, hydrogen, methanol