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Q:

caffeine is also a what?

A) Psychoactive B) Barbiturate
C) Narcotic D) Opioid
 
Answer & Explanation Answer: A) Psychoactive

Explanation:

Caffeine is also a psychoactive drug which alters the mood and conscious in our behaviour. It is widely consumed as a psychoactive drug.

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Filed Under: General Science
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Q:

Exercise improves memory and learning.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Exercise can boost your memory and thinking skills by improvising alertness, attention and motivation.

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Subject: General Science
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Q:

21% of 500 + 31% of 1100 - 30% of 790 = ? 

A) 209 B) 290
C) 309 D) 390
 
Answer & Explanation Answer: A) 209

Explanation:

Given 21% of 500 + 31% of 1100 - 30% of 790 = ?

 

? = 21 x 5 + 31 x 11 - 3 x 79

? = 105 + 341 - 237

? = 446 - 237

? = 209.

 

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Filed Under: Percentage
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Q:

Processing speed of computer is measured in MIPS.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Million Instructions Per Second is a method of measuring the raw speed of a computer's processor. MIPS measures roughly the number of machine instructions that a computer can execute in one second.

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Subject: Computer
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Q:

The world's most liveable city 2018?

A) Melbourne B) Damascus
C) Dhaka D) Vienna
 
Answer & Explanation Answer: D) Vienna

Explanation:

Vienna has become the world's most pleasant city to live in by topping the Global Liveability Index of the Economist Intelligence Unit by dislodging Melbourne, the Austrian capital.

 

While Damascus retained the last place and Dhaka, Bangladesh's capital was in second last place in the annual survey examined 140 metropolitan cities.

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Filed Under: General Awareness
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Q:

Speed of sound is maximum in which among the following?

A) Gases B) Vaccum
C) Liquids D) Solids
 
Answer & Explanation Answer: D) Solids

Explanation:

We know that, in solids all the particles are packed together and hence sound can travel from one to one very fast.

 

Hence, speed of sound is maximum in solids and decreses from solids to liquids and liquids to gases. Sound can't travel through vaccum.

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Filed Under: Physics
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Q:

Where does digestion of protein begin?

A) Mouth B) Pharynx
C) Stomach D) Liver
 
Answer & Explanation Answer: C) Stomach

Explanation:

Three main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.

 

Hence, digestion of protein begin in stomach.

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Filed Under: Biology
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Q:

Where is excess glucose stored?

A) Blood B) Liver
C) Heart D) Kidneys
 
Answer & Explanation Answer: B) Liver

Explanation:

Glucose is essential for energy in all the living organisms. When we have more glucose than needs in our bloodstream, then the excess glucose is stored as large compounds as Glycogen. This glycogen fills the cells of the liver and available for any quick shots of energy.

 

Hence, Liver is called as warehouse for the excess glucose.

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Filed Under: Biology
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