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Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 3 August 2021, Shift 1, Physics Q7

Question 7 of 90 in this shift, Physics question 7 of 30, Section A.

A gas has a constant volume filled in a glass bulb and its pressure becomes 71.00 cmcm and 100 cmcm of HgHg at 0°C and 100°C respectively. The value of pressure at 30°C is -
  1. (1)73 cmcm of HgHg
  2. (2)27 cmcm of HgHg
  3. (3)79.7 cmcm of HgHgOfficial answer
  4. (4)78 cmcm of HgHg

Official answer

Option 3

NTA final key.

Chapter
Thermal Properties of Matter
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.