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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

${Methane (CH}_{4)}$ — London dispersion forces

${Dimethyl ether (CH}_{3} {OCH}_{3)}$ — dipole-dipole attractions

${Methanol (CH}_{3} OH)$ — hydrogen bonding

Therefore, ${Methanol -}$ ${CH}_{3} OH$ $with H-Bonding have highest Boiling Point among the given chemical compounds.$

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Q:

The ratio between present ages of Renuka and Sony is 5 : 4 . 4 years ago, Sony's age was 24 years. What will be Renuka's age after 5 years ?

A) 25	B) 30
C) 35	D) 40

Answer & Explanation Answer: D) 40

Explanation:

Present age of Sony = 24 + 4 = 28 years

After 5 years Renuka's age = 7×5 + 5 = 40 years

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Q:

A woman fills a bucket in 6 minutes. 1845 buckets have to be filled from 8 am. to 9:30 am. How many woman employees should be employed for this task?

A) 111	B) 117
C) 123	D) 139

Answer & Explanation Answer: C) 123

Explanation:

We know that, $\frac{M 1 \times D 1}{W 1} = \frac{M 2 \times D 2}{W 2}$

Here M1 = 1, D1 = 6 min, W1 = 1 and M2 = M, D2 = 90 min, W2 = 1845

$\frac{1 \times 6}{1} = \frac{M \times 90}{1845}$

=> M = 123

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Filed Under: Time and Work
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Q:

How many periods in National Hockey League?

A) 2	B) 3
C) 4	D) 5

Answer & Explanation Answer: B) 3

Explanation:

National Hockey League game is divide into 3 Periods each of 20 minutes. During the regular season, if the game ends in a tie, a 5 minute, sudden death overtime is played. In the playoffs, the overtime is 20 minutes long.

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Q:

Which Crop is Sown on the Largest Area in India?

A) Wheat	B) Barley
C) Rice	D) Maize

Answer & Explanation Answer: C) Rice

Explanation:

India is the second largest producer of Rice in the World. Rice is the most cultivated crop in India.

According to 2002-2003 census, about 33 million hectares of area in India was cultivated with Rice.

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Filed Under: Indian Geography
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Q:

A decision committee of 5 members is to be formed out of 4 Actors, 3 Directors and 2 Producers. In how many ways a committee of 2 Actors, 2 Directors and 1 Producer can be formed ?

A) 18	B) 24
C) 36	D) 32

Answer & Explanation Answer: C) 36

Explanation:

Required Number of ways = $4 C_{2} \times 3 C_{2} \times 2 C_{1} = 36$ = 36

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Filed Under: Permutations and Combinations
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Q:

The length of a class room floor exceeds its breadth by 25 m. The area of the floor remains unchanged when the length is decreased by 10 m but the breadth is increased by 8 m. The area of the floor is

A) 5100 sq.m	B) 4870 sq.m
C) 4987 sq.m	D) 4442 sq.m

Answer & Explanation Answer: A) 5100 sq.m

Explanation:

Let the breadth of floor be 'b' m.

Then, length of the floor is 'l = (b + 25)'

Area of the rectangular floor = l x b = (b + 25) × b

According to the question,

(b + 15) (b + 8) = (b + 25) × b

$b^{2} + 8 b + 15 b + 120 = b^{2} + 25 b$

2b = 120

b = 60 m.

l = b + 25 = 60 + 25 = 85 m.

Area of the floor = 85 × 60 = 5100 sq.m.

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Q:

Mica is available abundantly in

A) Andhra Pradesh, Jharkand, Bihar	B) Bihar, Gujarat, Telangana
C) Andhra Pradesh, Karnataka, Jharkand	D) Telangana, Andhra Pradesh, Bihar

Answer & Explanation Answer: A) Andhra Pradesh, Jharkand, Bihar

Explanation:

According to 2005 - 2006 census - Jharkand

According to 2011 - 2012 census - Andhra Pradesh

are the highest producers of Mica in India.

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Filed Under: Indian Geography
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