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Q:

Which is an invention that improved safety for railway passengers?

A) Air brakes B) Refrigerated rail cars
C) Time standardization D) Pullman sleeping cars
 
Answer & Explanation Answer: A) Air brakes

Explanation:

An invention that improved safety for railway passengers is Air brakes. With the use of air brakes using compressed air, become more effective by preventing many train accidents.

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Q:

What is the name for the compound P4O10?

A) Phospholipid B) Phosphoric acid
C) Phosphorus pentoxide D) Phosphorus decoxide
 
Answer & Explanation Answer: C) Phosphorus pentoxide

Explanation:

The compound with the molecular formula P4O10 is called Phosphorus pentoxide or tetraphosphorous decoxide. It is an anhydride of the Phosphoric acid.

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Q:

Which of the following is generally true about the stratosphere?

A) It is very dry B) It is very moist
C) The dryness level varies with the season D) The dryness level varies with the moon cycle
 
Answer & Explanation Answer: A) It is very dry

Explanation:

The stratosphere layer of the atmosphere is very dry.

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Q:

Hypnology is the study of

A) blood B) nerves
C) sleep D) disease
 
Answer & Explanation Answer: C) sleep

Explanation:

Hypnology is the study of sleep.

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Q:

During which process is water produced?

A) Acetyl COA formation B) Electron transport chain
C) Alcohol fermentation D) citric acid cycle
 
Answer & Explanation Answer: B) Electron transport chain

Explanation:
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Q:

Who invented the battery?

A) John Wilkinson B) Alessandro Volta
C) James Hargreaves D) Thomas Edison
 
Answer & Explanation Answer: B) Alessandro Volta

Explanation:
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Q:

Which tennis player has authored a book titled "Unstoppable : My Life So Far" ?

A) Serena Williams B) Maria sharapova
C) Sania Mirza D) Venus Williams
 
Answer & Explanation Answer: B) Maria sharapova

Explanation:
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Q:

The storage form of glucose in animals is

A) Starch B) Glucose
C) Glycogen D) None of the above
 
Answer & Explanation Answer: C) Glycogen

Explanation:

Glycogen is the storage form of glucose in animals and humans which is analogous to the starch in plants. Glycogen is synthesized and stored mainly in the liver and the muscles.

 

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