Questions

Q:

Which of the following chemical compounds has the highest boiling point?

A) Dimethyl ether (CH3OCH3) B) Methanol (CH3OH)
C) Methane (CH4) D) None
 
Answer & Explanation Answer: B) Methanol (CH3OH)

Explanation:

Chemical Compounds with stronger intermolecular forces have higher boiling points.

 

The order of strengths of intermolecular forces is:

 London dispersion < dipole-dipole < H-bonding

 

Methane (CH4) — London dispersion forces

Dimethyl ether (CH3OCH3) — dipole-dipole attractions

Methanol (CH3OH) — hydrogen bonding

Therefore, Methanol - CH3OH with H-Bonding have highest Boiling Point among the given chemical compounds.

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Q:

'New Horizons' spacecraft was launched by NASA to study which of the following planet ?

A) Earth B) Mercury
C) Pluto D) Venus
 
Answer & Explanation Answer: C) Pluto

Explanation:
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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:

According to legend, which deity was Ved Vyasa's scribe as he dictated the story of the Mahabharata?

Answer

Ganesha

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Subject: Indian Culture

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Q:

What travels around the world and stays in one spot?

A) Slippers B) Walking stick
C) Stamps D) None of the above
 
Answer & Explanation Answer: C) Stamps

Explanation:

Stamps are what travel around the worldstaying in one spot. Slippers and walking stick can also travel around the world but they will not stay at one spot. So they are eliminated.

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Q:

Solve this math logical puzzle

how_many_total_digits1560511557.jpg image

A) 192 B) 180
C) 196 D) 189
 
Answer & Explanation Answer: A) 192

Explanation:

Pages are denoted as 

1 - 9 = 09

10 - 99 = 90*2 = 180

100 = 03

 

Hence, total number of digits = 09 + 180 + 03 = 192.

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Q:

Which of the following is not a polymer?

A) DNA B) Glucose
C) Starch D) Cellulose
 
Answer & Explanation Answer: B) Glucose

Explanation:

Since A polymer is a large molecule, or macromolecule, composed of many repeated subunits. Glucose is not a polymer.

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Q:

Which of the following work is not credited to Lord Dalhousie?

A) Merger of Punjab B) Merger of Bengal
C) Merger of Mysore D) Merger of Satara
 
Answer & Explanation Answer: C) Merger of Mysore

Explanation:
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Filed Under: Indian History
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