Q:

Ozone hole refers to

A) Decrease in the thickness of ozone layer in Stratosphere	B) Increase in thickness of ozone layer
C) Decrease in the ozone layer in Troposphere	D) Hole in the ozone layer

Answer & Explanation Answer: A) Decrease in the thickness of ozone layer in Stratosphere

Explanation:

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Q:

Answer the following puzzle

Answer

7:05

Explanation: As you move from left to right, the time shown on each watch decreases by 12 minutes, then 24, 36 and 48.

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Subject: Clock puzzles

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Q:

Sleeping sickness in man is caused by the organism

A) plasmodium	B) entamoeba
C) giardia	D) trypanosoma

Answer & Explanation Answer: D) trypanosoma

Explanation:

Trypanosoma is a protozoan animal. It lives as a parasite in the blood and later invades the cerebrospinal fluid to cause the sleeping sickness. This parasite is transmitted by the Tsetse fly.

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Q:

Why are hydrocarbons insoluble in water?

Answer

We know that polar substances are soluble in polar solvents and non polar substances are soluble in non-polar solvents only. Here the hydrocarbons are non-polar molecular substances and water is a polar solvent. So water can't dissolve hydrocabons.

Hence, as hydrocarbons are non-polar substances, they are insoluble in water as it is a highly polar solvent.

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Q:

Missing Letter Challenge

18739822_1315678848539216_348955014883925877_n1499155394.jpg image

A) N	B) K
C) L	D) P

Answer & Explanation Answer: A) N

Explanation:

The alphabetical value of the letters in the left hand column follows through the sequence of Prime Numbers, with the letters in the right hand column representing the corresponding reverse alphabetical values. So,

M = Reverse of M = N.

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Q:

Who is the author of the book "The way of Knife: The CIA, A secret army and a war at the ends of the earth" ?

A) Mark Twain	B) Irika John
C) Mario Pujo	D) Mark Mazzetti

Answer & Explanation Answer: D) Mark Mazzetti

Explanation:

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Q:

A colored ion generally indicates a

A) transition metal	B) metalloid
C) large in size	D) Both B & C

Answer & Explanation Answer: A) transition metal

Explanation:

A colored ion generally indicates a transition metal.

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Q:

The Asia-Pacific Economic Cooperation meeting was organised in September 2007 in which of the following places?

A) Sydney	B) New York
C) Tokyo	D) Beijing

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