MEDIUM
9th Kerala Board
IMPORTANT
Earn 100

Hydrogen is not used as a domestic fuel. What are the reasons for this limitation?

Important Questions on Non Metals

MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 98
One of the crystalline forms of carbon is diamond. Diamond does not conduct electricity. Why?
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 99
Which allotrope of carbon is a conductor of electricity?
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 100
Graphite is the allotrope of carbon that conducts electricity. Give reason for this.
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 101
Write down any two uses of graphite allotrope.
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 102

Match the following.

A B
Diamond Nanotechnology
Graphite Making of ornaments
Graphene Lubricants
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 103
Dilute hydrochloric acid and calcium carbonate are taken in a test tube. Which gas is produced?
MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 104

Complete the chemical equation of the reaction.

CaCO3+ 2HCl→ CaCl2+_____+_____

MEDIUM
9th Kerala Board
IMPORTANT
Chemistry Standard IX Part 2>Chapter 3 - Non Metals>Exercise 1>Q 105
Dilute hydrochloric acid and calcium carbonate are taken in a test tube. The gas obtained is passed through clear lime water. Write down the observation.