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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:

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

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

Explanation:
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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

Explanation:
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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

Explanation:
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Q:

Person who is colour-blind cannot distinguish between

A) Black and yellow B) Red and green
C) Yellow and white D) Green and blue
 
Answer & Explanation Answer: B) Red and green

Explanation:
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Q:

Hindustan Aeronautics Limited handed over the  first  two  indigenously designed  and manufactured  light  combat  aircrafts  to  the Indian Air Force in 2016. What is the name of these new combat aircrafts?

A) Marut B) Garud
C) Tejas D) Pushpak
 
Answer & Explanation Answer: C) Tejas

Explanation:

Tejas is an Indiansingle-seat, single-jet engine,multirole light fighter designed by the Aeronautical Development Agency(ADA) and Hindustan Aeronautics Limited(HAL) for the Indian    Air    Force and Indian Navy.   It   came   from   the   Light Combat Aircraft (LCA) programme, which   began   in   the   1980s   to replace India's ageing MiG-21 fighters.  In  2003,  the  LCA  was officially named "Tejas.

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Q:

How many languages are officially recognized in India?

A) 17 B) 19
C) 22 D) 10
 
Answer & Explanation Answer: C) 22

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Q:

'Green Banking' means :

A) Banks financing agriculture B) Banks financing irrigation projects
C) Banks financing farmers D) Banks financing pro-­environmental projects
 
Answer & Explanation Answer: D) Banks financing pro-­environmental projects

Explanation:
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