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Q:

The law of conservation of energy states that

A) energy can neither be created nor destroyed	B) energy can either be created nor destroyed
C) energy can neither be created or destroyed	D) energy can either be created or destroyed

Answer & Explanation Answer: A) energy can neither be created nor destroyed

Explanation:

The law of conservation of energy is a law of science which states that energy can neither be created nor destroyed - only converted from one form of energy to another.

In 1842, Julius Robert Mayer discovered the Law of Conservation of Energy.

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Filed Under: Physics
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Q:

Separation of judiciary from executive is enjoined by

A) Directive principle	B) Judicial decision
C) Seventh schedule	D) Preamble

Answer & Explanation Answer: A) Directive principle

Explanation:

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Filed Under: Indian Politics
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Q:

The headquarters of the coffee board of India is

A) Bangalore	B) Mysore
C) Chennai	D) Hyderabad

Answer & Explanation Answer: A) Bangalore

Explanation:

The Coffee Board of India is an organisation managed by the Ministry of Commerce and Industry of the government of India to promote coffee production in India. The headquarters of the coffee board of India is located in Bangalore, Karnataka.

The Coffee Board of India was established by an act of Parliament in 1942.

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Filed Under: Indian Geography
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Q:

Which of the following is not a prime cost?

A) Supervisor's wages	B) Assembly line wages
C) Machine operators wages	D) Direct labor wages

Answer & Explanation Answer: A) Supervisor's wages

Explanation:

The prime cost calculates the use of raw materials and direct labor, but does not factor in indirect expenses, such as advertising and administrative costs.

Supervisor's wages doesn;t come under prime cost.

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Filed Under: Indian Economy
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Q:

Which memory needs refresh?

A) DRAM	B) SRAM
C) ROM	D) All of the above

Answer & Explanation Answer: A) DRAM

Explanation:

Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information.

DRAM1532669979.png image

Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random-access memory (DRAM), the most widely used type of computer memory.

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Filed Under: Computer
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Q:

Complete the next number in the given number series?

21 56 102 160 231 316

A) 416	B) 415
C) 414	D) 413

Answer & Explanation Answer: A) 416

Explanation:

The given number series is 21 56 102 160 231 316

21 56 102 160 231 316 416

+35 +46 +58 +71 +85 +100

+11 +12 +13 +14 +15

Hence, the next number in the given number series is 316 + 100 = 416.

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Filed Under: Number Series
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Q:

In a class 60% of the students pass in English and 45% pass in Hindi. If 25% of them pass in both subjects, what percentage of the students fail in both the subjects?

A) 20%	B) 25%
C) 30%	D) 15%

Answer & Explanation Answer: A) 20%

Explanation:

Percentage of students passed in English = 60%

Percentage of students passed in Hindi = 45%

Percentage of students passed in both subjects = 25%

ATQ,

Percentage of students passed in only English = 60 - 25 = 35%

Percentage of students passed in only Hindi = 45 - 25 = 20%

Therefore, Percentage of students failed = 100 - (35 + 25 + 20)

= 100 - 80 = 20%.

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Filed Under: Percentage
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Q:

The ages of Sunitha and Pranitha are 40 years and 60 years, respectively. How many years before the ratio of their ages was 3 : 5?

A) 10 years	B) 15 years
C) 18 years	D) 24 years

Answer & Explanation Answer: A) 10 years

Explanation:

Given the ages of Sunitha and Pranitha are 40 years and 60 years.

Let before 'm' years, their ages be in the ratio of 3 : 5

ATQ,

$\frac{40 - m}{60 - m} = \frac{3}{5}$

=> 200 - 5m = 180 - 3m

=>2m = 20

=> m = 10 years.

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Filed Under: Problems on Ages
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