Questions

Q:

The absolute refractive index of air is

A) 1.03 B) 1.00003
C) 1.003 D) 1.0003
 
Answer & Explanation Answer: D) 1.0003

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Q:

The outermost layer of sun is called

A) Lithosphere B) Chromosphere
C) Photosphere D) Corona
 
Answer & Explanation Answer: B) Chromosphere

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Q:

___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.

A) Methane B) Greenhouse
C) Carbon dioxide D) Ozone
 
Answer & Explanation Answer: B) Greenhouse

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Q:

Which is known as carbolic acid?

A) Phenol B) Ethanol
C) Acetic acid D) Oxalic acid
 
Answer & Explanation Answer: A) Phenol

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Q:

Oxide of which of the following will turn red litmus blue?

A) Magnesium B) Phosphorus
C) Sulphur D) Carbon
 
Answer & Explanation Answer: A) Magnesium

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Q:

According to an early Indian philosopher everything is made up of ___ basic elements.

A) 2 B) 4
C) 3 D) 5
 
Answer & Explanation Answer: D) 5

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Q:

The pH of a solutiion is 3. When its pH changes to 6, then H+ ion concentration

A) increases 2 times B) increases 3 times
C) decreases 1000 times D) decreases 100 times
 
Answer & Explanation Answer: C) decreases 1000 times

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Q:

In which city of India is Dhamek Stupa located?

A) Pune B) Delhi
C) Varanasi D) Hyderabad
 
Answer & Explanation Answer: C) Varanasi

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