General science Archives

1. Decibel is the unit used for: A. Speed of light B. Intensity of heat C. Intensity of sound D. Radio wave frequency

Speed of light

Intensity of heat

Intensity of sound

Radio wave frequency

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wave frequency" class="read-more button" href="https://exam.pscnotes.com/mcq/decibel-is-the-unit-used-for-a-speed-of-light-b-intensity-of-heat-c-intensity-of-sound-d-radio-wave-frequency/#more-21722">Detailed Solution

2. Newton is the unit of: A. Force B. Momentum C. Acceleration due to gravity D. Velocity

Force

Momentum

Acceleration due to gravity

Velocity

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Detailed SolutionNewton is the unit of: A.

Force B. Momentum C. Acceleration due to gravity D. Velocity

3. What are metal bearing rocks called? A. Bitumen B. Bauxite C. Metalloids D. Ores

Bitumen

Bauxite

Metalloids

Ores

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Detailed

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Solution

4. The percentage of oxygen present in air is approximately- A. 44% B. 23% C. 40% D. 21%

44%

23%

40%

21%

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Detailed Solution

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class="screen-reader-text">The percentage of oxygen present in air is approximately- A. 44% B. 23% C. 40% D. 21%

5. Which is the absolute temperature scale? A. Celsius B. Fahrenheit C. Kelvin D. All of these

Celsius

Fahrenheit

Kelvin

All of these

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Kelvin D. All of these" class="read-more button" href="https://exam.pscnotes.com/mcq/which-is-the-absolute-temperature-scale-a-celsius-b-fahrenheit-c-kelvin-d-all-of-these/#more-21718">Detailed Solution

6. Which layer protects earth from harmful rays of the Sun? A. Ionosphere B. Ozone layer C. Troposphere D. Magnetosphere

Ionosphere

Ozone layer

Troposphere

Magnetosphere

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Detailed SolutionWhich layer protects earth from harmful rays of the

Sun? A. Ionosphere B. Ozone layer C. Troposphere D. Magnetosphere

7. Which of the following schemes is launched for the school going children: A. Lok Jumbish B. Mid day meal C. Sarva Shiksha Abhiyan D. Ayush

Lok Jumbish

Mid day meal

Sarva Shiksha Abhiyan

Ayush

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Detailed SolutionWhich of the following schemes is

launched for the

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school going children: A. Lok Jumbish B. Mid day meal C. Sarva Shiksha Abhiyan D. Ayush

8. Noise or Noise pollution measured in: A. Phon B. Deci C. Decibel D. Decimal

Phon

Deci

Decibel

Decimal

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Decimal" class="read-more button" href="https://exam.pscnotes.com/mcq/noise-or-noise-pollution-measured-in-a-phon-b-deci-c-decibel-d-decimal/#more-21716">Detailed Solution