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RRB NTPC Science & Technology — practice questions

Explore 10 free Science & Technology questions in RRB NTPC General Awareness. Open each question or exercise to read its content, reference answers and available explanation.

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Science & Technology questions and exercises with answers

Showing questions 1–10 of 10.

The Mach number of a moving object is defined as its speed divided by what?Read the answer and worked solution →Which of these planets is classed as an ice giant?Read the answer and worked solution →Which giant planet has the only rings easily observed from Earth?Read the answer and worked solution →Which dwarf planet lies in the asteroid belt?Read the answer and worked solution →How many planets does the Solar System have?Read the answer and worked solution →The first Indian in space, Rakesh Sharma, flew in which year?Read the answer and worked solution →RRB NTPC · Human Body FunctionsRead the answer and worked solution →RRB NTPC · Indian Defense & Space TechRead the answer and worked solution →RRB NTPC · Scientific Concepts & TermsRead the answer and worked solution →RRB NTPC · Advanced Biology and SpaceRead the answer and worked solution →

Worked practice questions

The Mach number of a moving object is defined as its speed divided by what?

  1. The speed of light
  2. Its own acceleration
  3. The time of travel
  4. The speed of sound
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Correct answer: D. The speed of sound

Mach number compares an object's speed with the local speed of sound.

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Which of these planets is classed as an ice giant?

  1. Jupiter
  2. Neptune
  3. Saturn
  4. Mars
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Correct answer: B. Neptune

Neptune, like Uranus, is largely made of water, methane and ammonia compounds termed ice, unlike gassy Jupiter and Saturn.

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Which giant planet has the only rings easily observed from Earth?

  1. Jupiter
  2. Uranus
  3. Saturn
  4. Neptune
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Correct answer: C. Saturn

All four giant planets have rings, but only Saturn's are bright enough to see easily from Earth.

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More General Awareness topics

History of IndiaGeography of IndiaGames and SportsBasics of Computers and Computer ApplicationsIndian Polity and GovernanceFamous Personalities of India and WorldFlagship Government ProgramsFlora and Fauna of India