Airforce Group X 2021 Paper with Answer key 12 July
Airforce Group X
Airforce Group X2021Memory-based Airforce Group X paper from 12 July 2021, Shift 3: 70 questions on Physics, Maths and English, with the correct option given for each.
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About this paper
This is the Indian Air Force Airmen Group X paper for 12 July 2021 (Shift 3), marked 'MBT' (memory-based test) on its cover, so it is a recollection rather than an official question booklet. Its 70 multiple-choice questions run 1–25 Physics, 26–50 Mathematics and 51–70 English, and the correct option is printed under every question. Physics ranges from electromagnetic waves and resistance to a Carnot engine and induced emf; Maths covers logarithms, probability, conic sections, statistics and circular permutations; English tests synonyms, antonyms, spelling, idioms, error spotting, voice and narration. No marks or time limit are printed.
- Exam
- Airforce Group X
- Subject
- Airforce Group X
- Year
- 2021
- Questions
- 70
- Pages
- 15
- Answers included
- Yes
Paper pattern
Questions 1–25
Physics
Questions 26–50
Mathematics
Questions 51–70
English: synonyms, antonyms, spelling, idioms, prepositions, error spotting, voice and narration
Topics covered
- Electromagnetic waves
- Current electricity and resistance
- Electromagnetic induction
- Kinematics and projectile motion
- Gravitation
- Thermodynamics and Carnot engine
- Logarithms
- Probability
- Conic sections
- Permutations and combinations
- Statistics
- Voice, narration and error spotting
Questions from this paper
- A Carnot engine works between 327 °C and 127 °C. If the heat absorbed by the engine is 9 × 10⁴ J, what is the work done by the engine?
- The magnetic flux linked with a coil, in weber, is given by φ = 6t² + 3t + 2. Find the magnitude of the induced emf in the coil at t = 3 s.
- Two conducting wires A and B are made of the same material. B is twice as long as A, and the radius of A's cross-section is twice that of B. Find the ratio of their resistances.
- The arithmetic mean of 50 observations was found to be 36, but one observation of 48 had been wrongly taken as 23. What is the correct mean?
- Seven persons are to be seated at a circular table. If two particular persons must not sit side by side, how many arrangements are possible?
- Change the voice: Did he plan an excursion to the mountains?
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