Class-8 - Chemistry - Chapter-4  - Combustion and Flame

Class-8 - Chemistry - Chapter-4 - Combustion and Flame

8th Grade

7 Qs

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Class-8 - Chemistry - Chapter-4  - Combustion and Flame

Class-8 - Chemistry - Chapter-4 - Combustion and Flame

Assessment

Quiz

Chemistry, Science

8th Grade

Medium

Created by

The Pro

Used 237+ times

FREE Resource

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following gases is used in combustion?

Hydrogen

Oxygen

Nitrogen

Carbon dioxide

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is non-combustible substance?

Wood

Paper

Iron nails

Straw

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which zone of a flame does a goldsmith use for melting gold and silver ?

Outer zone

Middle zone

Inner zone

Lower zone

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Substances which catch fire are called

acids

bases

combustible

burners

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a fossil fuel?

Coal

Petroleum

Natural gas

Water gas

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A temperature at which the substance starts burns is called

melting

boiling temperature

ignition temperature

evaporation

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If 150g of fuel is burned the energy produced is 45,000J then find the calorific value of the fuel .

3,00,000Kj

2,30,000Kj

30,000Kj

4,50,000Kj