Questions

Q:

What is the pH value of human blood?

A) 8.3 B) 6.8
C) 7.4 D) 6
 
Answer & Explanation Answer: C) 7.4

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Q:

There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?

A) 22 B) 7
C) 37 D) 15
 
Answer & Explanation Answer: C) 37

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Q:

How many groups and periods are present in the Modern Periodic Table?

A) 9 groups, 9 periods B) 7 groups, 8 periods
C) 18 groups, 7 periods D) 8 groups, 7 periods
 
Answer & Explanation Answer: C) 18 groups, 7 periods

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Q:

Which city is located on the banks of the river Alaknanda?

A) Badrinath B) Ayodhya
C) Allahabad D) Lucknow
 
Answer & Explanation Answer: A) Badrinath

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Q:

Which is the closest star to our solar system?

A) Alpha Centauri B) Beta Centauri
C) Proxima Centauri D) Barnard
 
Answer & Explanation Answer: C) Proxima Centauri

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Q:

A deep crack in a glacier is called

A) A crevice B) A crevasse
C) A crack D) A cleft
 
Answer & Explanation Answer: B) A crevasse

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Q:

Study of earth is known as

A) Ecology B) Biology
C) Ethology D) Geology
 
Answer & Explanation Answer: D) Geology

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Q:

What is the reason for formation of Mirage in desert?

A) Refraction of light B) Reflection of light
C) Total internal reflection of light D) Both Refraction and Total internal reflection of light
 
Answer & Explanation Answer: D) Both Refraction and Total internal reflection of light

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