🔬
Class 8 Science — Chapter 4: Combustion and Flame
6 practice questions · 2 Easy · 2 Medium · 2 Hard
Free NCERT-aligned multiple-choice practice for Class 8 Science, Chapter 4 (Combustion and Flame). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 6.
Sample questions
Q1Easy
Combustion requires:
A.Fuel, oxygen, ignition heat✓ correct
B.Only fuel
C.Only oxygen
D.Only heat
Why
Fire triangle.
Q2Medium
Ignition temperature is:
A.Lowest temperature at which a substance catches fire✓ correct
B.Highest temperature
C.Boiling point
D.Melting point
Why
Property of the fuel.
Q3Hard
Calorific value of a fuel is:
A.Heat produced by complete combustion of unit mass✓ correct
B.Mass of fuel
C.Volume
D.Density
Why
Measured in kJ/kg.
Practise all 6 questions free
Timed quizzes, instant scoring, streaks and XP. Sign in with Google — no card needed.
Start this chapter free →