Mathematics carries the highest weight in AISSEE — 150 of 300 marks in Class 6 and 200 of 400 marks in Class 9 — and it is also a key section of the RMS CET. Practise these 10 MCQs on Temperature Conversion, then check your answers and step-by-step solutions in the answer key at the end.
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. Convert 25°C into degrees Fahrenheit.
(A) 95°F
(B) 77°F
(C) 67°F
(D) 57°F
Q2. Convert 104°F into degrees Celsius.
(A) 45°C
(B) 72°C
(C) 50°C
(D) 40°C
Q3. A clinical thermometer usually reads temperatures from ________.
(A) 35°C to 42°C
(B) 0°C to 100°C
(C) −10°C to 110°C
(D) 20°C to 60°C
Q4. Convert 30°C into degrees Fahrenheit.
(A) 104°F
(B) 76°F
(C) 62°F
(D) 86°F
Q5. Convert 113°F into degrees Celsius.
(A) 50°C
(B) 81°C
(C) 55°C
(D) 45°C
Q6. At which temperature are the Celsius and Fahrenheit readings equal?
(A) 0°
(B) −40°
(C) 40°
(D) 100°
Q7. Convert 15°C into degrees Fahrenheit.
(A) 77°F
(B) 49°F
(C) 59°F
(D) 47°F
Q8. At what temperature does pure water boil at sea level?
(A) 90°C
(B) 212°C
(C) 100°C
(D) 0°C
Q9. Convert −40°C into degrees Fahrenheit.
(A) −40°F
(B) −22°F
(C) −50°F
(D) −8°F
Q10. Convert 68°F into degrees Celsius.
(A) 25°C
(B) 20°C
(C) 36°C
(D) 30°C
Answer Key with Explanations
(B) 77°F — F = (9/5)×C + 32 = (9/5)×(25) + 32 = 77°F.
(D) 40°C — C = (5/9)×(F − 32) = (5/9)×72 = 40°C.
(A) 35°C to 42°C — A clinical thermometer measures body temperature, from 35°C to 42°C.
(D) 86°F — F = (9/5)×C + 32 = (9/5)×(30) + 32 = 86°F.
(D) 45°C — C = (5/9)×(F − 32) = (5/9)×81 = 45°C.
(B) −40° — −40°C = −40°F.
(C) 59°F — F = (9/5)×C + 32 = (9/5)×(15) + 32 = 59°F.
(C) 100°C — Water boils at 100°C, which is 212°F.
(A) −40°F — F = (9/5)×C + 32 = (9/5)×(−40) + 32 = −40°F.
(B) 20°C — C = (5/9)×(F − 32) = (5/9)×36 = 20°C.
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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