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Q:

The amount of water vapour in the air is called...?

A) snow B) humidity
C) sunsafe factor D) water cycle
 
Answer & Explanation Answer: B) humidity

Explanation:
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Filed Under: General Science

Q:

What invisible force holds you onto the earth, so that you don't simply fall off?

A) gravity B) magnetism
C) wind D) speed
 
Answer & Explanation Answer: A) gravity

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Q:

Balloons are filled with

A) oxygen B) nitrogen
C) argon D) helium
 
Answer & Explanation Answer: D) helium

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Q:

In fireworks, the green flame is produced because of

A) Sodium B) Potassium
C) Barium D) Mercury
 
Answer & Explanation Answer: C) Barium

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Q:

Heavy water is

A) PH7 B) rain water
C) deuterium oxide D) tritium oxide
 
Answer & Explanation Answer: C) deuterium oxide

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Q:

The gases used in different types of welding would include

A) oxygen and hydrogen B) oxygen and acetylene
C) oxygen, acetylene and argon D) oxygen, hydrogen, acetylene and nitrogen
 
Answer & Explanation Answer: B) oxygen and acetylene

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Q:

What is the scientific name for washing soda?

A) Sodium carbonate B) Sodium bicarbonate
C) Calcium carbonate D) Calcium bicarbonate
 
Answer & Explanation Answer: A) Sodium carbonate

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Q:

Which of the following is used in pencils?

A) Silicon B) Phosphorous
C) Graphite D) Charcoal
 
Answer & Explanation Answer: C) Graphite

Explanation:

A pencil is an implement for writing or drawing. It is a thin core of graphite well mixed with clay, inside a wooden body as protective casing that prevents the core from being broken.

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