Q:

Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted.

A) rough white	B) rough black
C) shining white	D) shining black

Answer & Explanation Answer: B) rough black

Explanation:

Black surfaces are good emitters of heat ( They are also good absorbers of heat). If the black surface is rough too, the emitting will be better. So (b) is the correct answer. Shining surfaces reflect back radiation. So if the black surface is also shining the effectiveness of emitting heat is lessened.

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Filed Under: Physics

4 3168

Q:

which alphabet is a fly?

A) Y	B) C
C) B	D) G

Answer & Explanation Answer: C) B

Explanation:

The alphabet 'B' resembles same as a fly 'Bee' in pronouncing.

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Filed Under: Word Puzzles
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3 3167

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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Filed Under: Inventions

0 3167

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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Filed Under: Books and Authors
Exam Prep: Bank Exams
Job Role: Bank Clerk , Bank PO

5 3166

Q:

Air temperatures are effected by slope and orientation as slopes facing into the Sun will be

A) Warmer than those facing away	B) Colder than those facing away
C) Neither warmer nor colder than those facing away	D) None of these

Answer & Explanation Answer: A) Warmer than those facing away

Explanation:

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Filed Under: World Geography

3 3166

Q:

The size of gear is usually specified by

A) pitch circle diameter	B) diametral pitch
C) pressure angle	D) circular pitch

Answer & Explanation Answer: A) pitch circle diameter

Explanation:

The size of gear is usually specified by pitch circle diameter.

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Filed Under: Physics
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Q:

The largest herbarium of India is located at

A) Kolkata	B) Lucknow
C) Mumbai	D) Coimbatore

Answer & Explanation Answer: A) Kolkata

Explanation:

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Filed Under: Indian Geography

1 3166

Q:

We Can still delete a row from primary table if there are related rows in secondary table once a refferential integrity is enforced

A) TRUE

B) FALSE

Answer & Explanation Answer: B) FALSE

Explanation:

Can’t delete a row from primary table if there are related rows in secondary table.

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