411UPSC2000General ScienceEnglish
A noise level of 100 decibel would correspond to
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Correct option: D — Noise from a machine shop
Free · past papers · answers included
General Science MCQ practice free online · page 42
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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- 412UPPSC2010General ScienceEnglish
As per the WHO, the safe noise level for a city is
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Correct option: A — 45 dB
- 413RPSC1993General ScienceEnglish
The tolerable limit of noise for human being is around
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Correct option: B — 85 decibel
- 414UPPSC2013General ScienceEnglish
Sound above what level (in decibel) is considered hazardous noise pollution?
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Correct option: C — 80 dB
- 415RPSC2012General ScienceEnglish
The optimum sound level for human beings is
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Correct option: B — 60 dB
- 416RPSC1994General ScienceEnglish
A worker was working on the rail track. A boy at a distance holds his ear near the rail track. This boy was able to hear sound of the blow of workman twice. It is because of
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Correct option: A — The speed of sound is greater in steel than in air
- 417UPSC1995General ScienceEnglish
When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in
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Correct option: C — quality only
- 418RPSC1996General ScienceEnglish
Which of the following has the longest wavelength?
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Correct option: D — Radio waves
- 419UPPSC2013General ScienceEnglish
Which one of the following does a TV remote control unit use to operate a TV set?
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Correct option: D — Radio waves
- 420UPPSC2013General ScienceEnglish
Which type of electromagnetic radiation is used in the remote control of a television?
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Correct option: A — Infra-red
General Science practice — common questions
Page 42 of this set has 10 questions on it.
Are these General Science questions free to practise?
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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".