281UKPSC2010General ScienceEnglish
Colour in a colour television is produced by a combination of three basic colours, they are
Show answerAnswer & explanation
Correct option: B — Red, green and blue
Free · past papers · answers included
General Science MCQ practice free online · page 29
Questions from RRB, NTPC, Group D and JE past papers. Tap an option to check it instantly — every question shows the correct answer, and most carry the explanation the paper gave.
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- 282MPPSC2016General ScienceEnglish
The minimum distance of clear vision for a normal healthy eye of human being is supposed to be
Show answerAnswer & explanation
Correct option: D — 25 cm
- 283MPPSC2015General ScienceEnglish
Which is not a primary colour?
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Correct option: A — Black
- 284UPPSC2015General ScienceEnglish
The number of colours contained in the Sunlight is
Show answerAnswer & explanation
Correct option: D — 7
- 285RPSC1999General ScienceEnglish
Find out the odd colour from the following options.
Show answerAnswer & explanation
Correct option: B — Brown
- 286UPSC2013General ScienceEnglish
Consider the following phenomena. 1. Size of the Sun at dusk 2. Colour of the Sun at dawn 3. Moon being visible at dawn 4. Twinkle of stars in the sky 5. Polestar being visible in the sky Which of the above are optical illusions?
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Correct option: C — 1, 2 and 4
- 287UPPSC2003General ScienceEnglish
Consider the following statements. 1. Fibre optics is based on the principle of total internal reflection. 2. In an optical fibre communication system, power consumption is extremely low. 3. Optical fibre communications are free from radio frequency interference. 4. In India, Reliance Group of Industries is engaged in the manufacture of the optical fibre. Which of these statements are correct?
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Correct option: A — 1, 2 and 3
- 288UPSC2002General ScienceEnglish
Consider the following natural phenomena. 1. Terrestrial heating 2. Reflection of light 3. Refraction of light 4. Diffraction of light Due to which of these phenomena is mirage formed?
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Correct option: C — 1 and 3
- 289WBPSC2018General ScienceEnglish
Given below are two statements, one labelled as Assertion (A) and other labelled as Reason (R). Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape. Reason (R): The refractive index of diamond is less than that of glass. In the context of the above two statements, which one of the following is correct?
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Correct option: C — (A) is true, but (R) is false
- 290UPSC2002General ScienceEnglish
Consider the following statements. 1. Light of longer wavelength is scattered much more than the light of shorter wavelength. 2. The speed of visible light in water is 0.95 times the speed in vacuum. 3. Radio waves are produced by rapidly oscillating electrical currents. 4. To detect the overspeeding vehicles, police use the Doppler effect of reflected short radio waves. Which of these statements are correct?
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Correct option: D — 3 and 4
General Science practice — common questions
Page 29 of this set has 10 questions on it.
Are these General Science questions free to practise?
Yes. Every question on this page is free and needs no account. Create a free account only if you want your progress saved.
Where do these General Science MCQs come from?
They are taken from official past papers of Indian government recruitment exams such as RRB NTPC, RRB Group D and RRB JE, and each question keeps a reference to the exam it appeared in.
Are the questions available in Hindi?
Yes. Many papers are set in both languages, so a large share of these questions are available in Hindi. Use the language filter at the top of the page.
Do the questions show answers and explanations?
Every question shows the correct option. Where the source paper included a worked solution, the explanation is shown under "Show answer".