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Q:

As water is cooled from 4 deg C to 0 deg C, its density

A) decreases B) increases
C) remains same D) zero
 
Answer & Explanation Answer: A) decreases

Explanation:

When water is cooled from 4°C to 0°C, its density decreases.

 

When water cools from 4°C to 0°C, ice crystals begin to form because the water is approaching its freezing point. When water freezes, the water molecules form a lattice that increases the volume. As a result, the density decreases. This is why ice will float on top of water; ice has a lower density than the water.

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Filed Under: General Science
Exam Prep: Bank Exams , CAT , GATE
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Q:

Four statements are given below at A, B, C and D. There may be some errors in the given statement(s). The incorrect statement is your answer.

A) Many Japanese cities had extensive tram systems until the 1960s, when increased motorization started to make some lines disappear. B) Increased motorization started to make some lines disappear after the1960s until when many Japanese cities had extensive tram systems.
C) When increased motorization started to make lines disappear, many Japanese cities have extensive tram systems until the 1960s. D) Until the 1960s, when increased motorization started to make some lines disappear, many Japanese cities had extensive tram systems.
 
Answer & Explanation Answer: C) When increased motorization started to make lines disappear, many Japanese cities have extensive tram systems until the 1960s.

Explanation:

‘has’ is incorrectly used since the sentence is in past tense. Moreover, the subject is cities, which is plural.

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Filed Under: English
Exam Prep: CAT , GRE , TOEFL

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Q:

Which tax uses the same rate for all income levels?

A) Income tax B) Proportional tax
C) Both A & B D) Service tax
 
Answer & Explanation Answer: B) Proportional tax

Explanation:

Tax that uses the same rate for all income levels is proportional tax.

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Filed Under: Indian Economy
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Q:

Which name was given to cyclone that struck AndhraPradesh recently?

A) Gaja B) Ockhi
C) Phethai D) Neelam
 
Answer & Explanation Answer: C) Phethai

Explanation:
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Filed Under: Indian Geography
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3 2315
Q:

A permanent magnet can affect

A) Magnets B) Electromagnets
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

A permanent magnet can affect both magnets and electromagnets.

a_permanent_magnet_can_affect1559196137.jpg image

A permanent magnet has natural magnetic properties while a temporal magnet is created by artificial means. Permanent magnets do not lose their magnetic ability.

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Filed Under: Physics
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Q:

The ratio of the cost price and selling price of a bulb is 15 : 18. What is the profit percentage?

A) 16.66 B) 14.28
C) 20 D) 22
 
Answer & Explanation Answer: C) 20

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams , CAT

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Q:

Which of the following is called the 'Gateway of the Pacific'?

A) Gulf of Alaska B) Panama Canal
C) Suez Canal D) Bering Sea
 
Answer & Explanation Answer: B) Panama Canal

Explanation:

Panama Canal is called the 'Gateway of the Pacific'.

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Filed Under: Indian Geography
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Q:

The scarcity definition of economics is credited to

A) Dennis Robertson B) Lionel Robbins
C) Alfred Marshall D) Adam Smith
 
Answer & Explanation Answer: B) Lionel Robbins

Explanation:

The scarcity definition of economics is credited to Lionel Robbins.

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Filed Under: Indian Economy
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