EASY
10th Karnataka Board
IMPORTANT
Earn 100

Write the molecular formula and structural formula for propanoic acid.

Important Questions on Carbon and its Compounds

EASY
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 11
Why are carbon and its compounds used as fuels for most applications?
MEDIUM
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 12
A mixture of oxygen and ethyne is burnt for welding. Can you tell why a mixture of ethyne and air is not used?
EASY
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 13
Why is candle flame generally yellow?
EASY
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 14

Write balanced chemical equation for the following:

Ethanol is treated with sodium

MEDIUM
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 15
What causes the hardness of water?
EASY
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 16
 What is scum? 
MEDIUM
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 17

Give reason for the following: 

Use of synthetic detergents cause pollution problems. 

MEDIUM
10th Karnataka Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Carbon and its Compounds>Exercise>Q 18
How would you distinguish experimentally between alcohol and carboxylic acid?