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Q:

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)

A) 204.60 g	B) 304.30 g
C) 804.32 g	D) 400.00 g

Answer & Explanation Answer: C) 804.32 g

Explanation:

$∆ T_{f} = k_{f} . m$

for ethylene glycol in aq. solution

$∆ T_{f} = k_{f} \frac{w}{m o l . w t} \times \frac{1000}{w t . o f s o l v e n t} 6 = \frac{1.86 x w x 1000}{62 x 4000}$

=> w = 800 g

So, the weight of solute should be more than 800 g.

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Filed Under: Chemistry
Exam Prep: AIEEE

Q:

In a certain city, 5% of all the persons in town have unlisted phone numbers. If you select 100 names at random from that city's phone directory, how many people selected will have unlisted phone numbers?

Answer

Zero. You are selecting names from the list, so they are all listed.

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Subject: Math Puzzles

Q:

Which is the Hottest Place in the World ?

Answer

Azizia (Libya,Africa) 136 F

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Subject: Longest, Shortest, Deepest

Q:

In ...................state is the Hornbill Festival held every year ?

A) Mizoram	B) Assam
C) Sikkim	D) Nagaland

Answer & Explanation Answer: D) Nagaland

Explanation:

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Filed Under: Indian Culture

Q:

The shortest air route from Moscow to San Francisco is

A) Over the Atlantic Ocean	B) Over the Pacific via Siberia
C) Over the North Pole	D) Through the latitude which passes through them

Answer & Explanation Answer: A) Over the Atlantic Ocean

Explanation:

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Filed Under: World Geography

Q:

Which badminton player was honored with Rajiv Gandhi Khel Ratna award in 2010?

A) Saina Nehwal	B) Jwala Gutta
C) P V Sindhu	D) None of the above

Answer & Explanation Answer: A) Saina Nehwal

Explanation:

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Filed Under: Honours and Awards

Q:

Who are winners of 2016 Kabaddi World Cup ?

A) Iran	B) Australia
C) India	D) Bangladesh

Answer & Explanation Answer: C) India

Explanation:

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Filed Under: Sports

Q:

.................was honored with the National Nritya Shiromani Award on January 7, 2014

A) Smt. Geeta	B) Mr. N. Radhakrishnan
C) Ms. Pritika Kalra Gandhi	D) None of the above

Answer & Explanation Answer: C) Ms. Pritika Kalra Gandhi

Explanation:

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Filed Under: Honours and Awards

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