General Science carries 50 marks in the AISSEE Class 9 paper (25 questions × 2 marks). These 10 MCQs on Metals, Non-metals, Coal, Petroleum and Combustion are based on the NCERT Class 8 topics listed in the official syllabus.
Quick facts: AISSEE 2027 will be held on Sunday, 31 January 2027. There is no negative marking, so attempt every question. Online applications are open until 2 December 2026 on exams.nta.nic.in/sainik-school-society.
Practice Questions
Q1. Which metal is liquid at room temperature?
(A) Aluminium
(B) Sodium
(C) Iron
(D) Mercury
Q2. Which non-metal is a good conductor of electricity?
(A) Sulphur
(B) Oxygen
(C) Graphite
(D) Phosphorus
Q3. Which metal is stored in kerosene because it reacts strongly with air and water?
(A) Copper
(B) Silver
(C) Sodium
(D) Gold
Q4. Rusting of iron needs ________.
(A) only water
(B) only heat
(C) only air
(D) both air (oxygen) and water
Q5. The process of coating iron with zinc to prevent rusting is called ________.
(A) galvanisation
(B) electrolysis
(C) crystallisation
(D) distillation
Q6. Coal, petroleum and natural gas are called ________.
(A) biofuels
(B) fossil fuels
(C) metals
(D) renewable resources
Q7. The process of turning coal into coke by heating in absence of air is called ________.
(A) evaporation
(B) combustion
(C) fermentation
(D) destructive distillation
Q8. The lowest temperature at which a substance catches fire is its ________.
(A) freezing point
(B) ignition temperature
(C) boiling point
(D) melting point
Q9. Which gas is essential for combustion?
(A) Oxygen
(B) Helium
(C) Nitrogen
(D) Carbon dioxide
Q10. Which is the hottest zone of a candle flame?
(A) Outer (non-luminous) zone
(B) The wax
(C) Middle luminous zone
(D) Innermost dark zone
Answer Key with Explanations
(D) Mercury — Mercury is the only metal that is liquid at room temperature.
(C) Graphite — Graphite, a form of carbon, conducts electricity.
(C) Sodium — Sodium catches fire in air, so it is kept in kerosene.
(D) both air (oxygen) and water — Iron rusts in the presence of oxygen and moisture.
(A) galvanisation — A zinc layer protects iron from rust.
(B) fossil fuels — They were formed from the remains of living things over millions of years.
(D) destructive distillation — Heating coal without air gives coke, coal tar and coal gas.
(B) ignition temperature — A substance burns only above its ignition temperature.
(A) Oxygen — Oxygen supports burning.
(A) Outer (non-luminous) zone — Complete combustion in the outer zone makes it the hottest.
How did you score?
9–10 correct: excellent — move on to a full-length mock test. 6–8: good — revise the explanations of the questions you missed. Below 6: study this topic again from your NCERT book and retry these questions after two days.
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