Q:

What element is found in all organic compounds?

A) Hydrogen	B) Calcium
C) Nitrogen	D) Carbon

Answer & Explanation Answer: D) Carbon

Explanation:

Carbon is found in all organic compounds.

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Q:

When is the world's press freedom day celebrated?

A) 3 May 2013	B) 22 May 2013
C) 3 October 2013	D) 22 October 2013

Answer & Explanation Answer: A) 3 May 2013

Explanation:

World press day is celebrated on 3 may 2013 accross the world based o the theme Safe to Speak

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Q:

Who Invented Traffic Signal ?

A) Lewis Edson Waterman	B) Levi Strauss
C) Percy LeBaron Spencer	D) Garrett Augustus Morgan

Answer & Explanation Answer: D) Garrett Augustus Morgan

Explanation:

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Filed Under: Inventions

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Q:

A boy is swinging a ball attached to a string in a horizontal circle.If the string snaps

A) the ball will travel towards the center of the circle and fall down	B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
C) it will fall down at the same place where the string breaks	D) none of these

Answer & Explanation Answer: B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

Explanation:

The centripetal force having been removed the body cannot execute the curved path. (B) is Correct.

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Filed Under: Physics

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Q:

A Step-Up Transformer Increases

A) Power	B) Current
C) Frequency	D) Voltage

Answer & Explanation Answer: D) Voltage

Explanation:

A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer.

Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer.

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Q:

Kathak, Nauntanki, Jhora and Kajri are the important dances of

A) Rajasthan	B) Punjab
C) Uttar Pradesh	D) Andhra Pradesh

Answer & Explanation Answer: C) Uttar Pradesh

Explanation:

Kathak, Nauntanki, Jhora and Kajri are the important dances of Uttar Pradesh.

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Q:

What provides electrons for the light reactions?

A) Water	B) Oxygen
C) Carbon dioxide	D) Light

Answer & Explanation Answer: A) Water

Explanation:

Electrons are stripped from water in the light reactions of photosynthesis. Light provides the energy to excite electrons.

ATP and NADPH are both products of the light reactions and are used to power the Calvin cycle.

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Filed Under: Biology
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Q:

The time complexity of sequential search is

A) O(n)	B) O(2n)
C) O(n^2)	D) None

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