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SSC CGL Scientific Research and Everyday Science — practice questions — page 3

Explore 63 free Scientific Research and Everyday Science questions in SSC CGL General Awareness. Open each question or exercise to read its content, reference answers and available explanation.

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Scientific Research and Everyday Science questions and exercises with answers

Showing questions 61–63 of 63.

Einstein's first relativity paper begins by defining which concepts?Read the answer and worked solution →Who deduced from refraction measurements that outer space is less dense than air?Read the answer and worked solution →Why is detailed record-keeping essential in experiments?Read the answer and worked solution →

Worked practice questions

Einstein's first relativity paper begins by defining which concepts?

  1. Gravity and inertia
  2. Energy and momentum
  3. Simultaneity and length
  4. Light and colour
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Correct answer: C. Simultaneity and length

Einstein opened by defining simultaneity and the means for determining length.

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Who deduced from refraction measurements that outer space is less dense than air?

  1. Avicenna
  2. Al-Biruni
  3. Roger Bacon
  4. Alhazen
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Correct answer: D. Alhazen

By 1027 Alhazen used his refraction measurements to deduce that space is rarer than air.

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Why is detailed record-keeping essential in experiments?

  1. It lets others repeat results
  2. It lowers experiment costs
  3. It replaces peer review
  4. It removes all errors
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Correct answer: A. It lets others repeat results

Detailed records support integrity and help other scientists reproduce the experimental results.

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