MEDIUM
8th ICSE
IMPORTANT
Earn 100

What is a fire extinguisher? What is the substance used in the modern type of fire extinguishers? How is it an improvement over the soda acid-type and the foam-type fire extinguishers ?

Important Questions on Carbon And Its Compounds

MEDIUM
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 6
Explain the term 'green house effect'. What are its benefits? How is it harmful?
HARD
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 7
What steps should be taken to balance carbon dioxide in the atmosphere ?
MEDIUM
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 8
State three ways by which carbon dioxide gas is added into the atmosphere.
EASY
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 1
_____ is formed when carbon is burnt in a limited supply of air or oxygen. (Carbon monoxide/ Carbon dioxide)
EASY
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 1
Carbon monoxide burns in air with a_____ flame to form carbon dioxide. (red/ blue)
EASY
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 1
Carbon monoxide is a product of _____ combustion. (complete/ incomplete)
EASY
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 1
A mixture of  95% oxygen and 5% carbon dioxide is called _____.
EASY
8th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 8>Chapter 9 - Carbon And Its Compounds>Exercise>Q 1
Carbon monoxide is used as a _____ in the extraction of pure metals from their corresponding ores.