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Q:

According to Census 2011, which one of the following is the correct sequence of States in decreasing order of their total size of population?

A) Kerala, Jharkhand, Assam, Punjab B) Jharkhand, Kerala, Assam, Punjab
C) Kerala, Jharkhand, Punjab, Assam D) Jharkhand, Kerala, Punjab, Assam
 
Answer & Explanation Answer: A) Kerala, Jharkhand, Assam, Punjab

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Filed Under: General Awareness
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Q:

Chlorophyll was first isolated and named by

A) Caventou B) Pelletier
C) Chlorophyll D) Caventou and Pelletier
 
Answer & Explanation Answer: D) Caventou and Pelletier

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Q:

In the gamma decay of a nucleus

A) the mass number of the nucleus changes whereas its atomic number does not change B) the mass number of the nucleus does not change whereas its atomic number changes
C) both the mass number and the atomic number of the nucleus change D) neither the mass number nor the atomic number of the nucleus changes
 
Answer & Explanation Answer: D) neither the mass number nor the atomic number of the nucleus changes

Explanation:

The emission of gamma rays does not alter the number of protons or neutrons in the nucleus but instead has the effect of moving the nucleus from a higher to a lower energy state (unstable to stable)

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Q:

Instrument for measuring low temperatures is called

A) Diagometer B) Cryometer
C) Chromatoptometer D) Cymometer
 
Answer & Explanation Answer: D) Cymometer

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Q:

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is half as that of earth is _________________.

 

A) 2g B) g/4
C) g/2 D) 4g
 
Answer & Explanation Answer: D) 4g

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Q:

The instrument used for measuring air pressure is called .....

A) Anemometer B) Barometer
C) Hygrometer D) Thermometer
 
Answer & Explanation Answer: B) Barometer

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Q:

A person holding a pen in his left hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena?

A) Diffused reflection B) Total internal reflection
C) Lateral inversion D) Refraction
 
Answer & Explanation Answer: C) Lateral inversion

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Q:

The pitch of a sound depends on its ____.

A) frequency B) wavelength
C) amplitude D) timbre
 
Answer & Explanation Answer: A) frequency

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Filed Under: Physics
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