Q:

A boy is swinging a ball attached to a string in a horizotal 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

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Q:

Which of the following is the best conductor of electricity?

A) Aluminium	B) Gold
C) Silver	D) Copper

Answer & Explanation Answer: C) Silver

Explanation:

silver is the best conductor of electricity.

When compared to remaining 3 metals, as Silver having more number of free electrons in its valency shell it is the good conductor of electricity.

Conductors Thermal Conductivity @ 25degree C

Silver --- 429
Copper --- 401
Gold --- 310
Aluminium --- 250

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Q:

At what temperature (in Fahrenheit) pure water freezes?

A) 0	B) 17
C) 32	D) 39

Answer & Explanation Answer: C) 32

Explanation:

$32^{o} F We know that T (° F) = T (° C) \times 1.8 + 32 32 (° F) = 0 (° C)$

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Q:

Which legendary cricketer has made his debut as a commentator in the opening match of World Cup 2019?

A) Sachin Tendulkar	B) Saurav Ganguly
C) Virendar Sehwag	D) Rahul Dravid

Answer & Explanation Answer: A) Sachin Tendulkar

Explanation:

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Q:

Which of the statements given below are correct?

A) Roger Federer won the Tennis 2017 French Open Men's Singles.

B) In 2018 IPL auctions, Rajasthan Royals retained Steve Smith.

C) Serena Williams won the Tennis 2017 French Open Women's Singles.

A) Only B	B) B and C
C) A and B	D) A, B and C

Answer & Explanation Answer: A) Only B

Explanation:

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Q:

The headquarters of the International Court of Justice is at

A) Geneva	B) The Hague
C) Rome	D) Vienna

Answer & Explanation Answer: B) The Hague

Explanation:

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Filed Under: World Organisations

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Q:

In which organ RBC are selectively destroyed/recycled by macrophages?

A) Kidney	B) Pancreas
C) Spleen	D) Liver

Answer & Explanation Answer: C) Spleen

Explanation:

Spleen is called as the graveyard of RBC Red Blood Cells where they are selectively destroyed/recycled by macrophages.

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Filed Under: Biology
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Q:

Who was the first to sail round the world ?

A) Francis Drake	B) Columbus
C) Magellan	D) Vasco da Gama

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