GATE Questions

Q:

What is the interest rate per annum, if a sum of money invested at compound interest amount to Rs. 2400 in 3 years and in 4 years to Rs. 2,520?

A) 3.5% B) 4%
C) 5% D) 6.5%
 
Answer & Explanation Answer: C) 5%

Explanation:

Let 'R%' be the rate of interest

From the given data,

25202400 = 1 + R10041 + R10031 + R100 = 6360R = 5

 

Hence, the rate of interest R = 5% per annum.

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19 4100
Q:

Which is called 'OFF State' in binary?

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

Explanation:

'0' is called OFF State in Binary...

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Filed Under: Arithmetical Reasoning
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8 4099
Q:

The sum of the two digits of a number is 8. If the number is subtracted from the number obtained by reversing its digits, the result is 54. Find the number ?

A) 28 B) 19
C) 37 D) 17
 
Answer & Explanation Answer: D) 17

Explanation:

Any two digit number can be written as (10P + Q), where P is the digit in the tens place and Q is the digit in the units place.
P + Q = 8 ----- (1)
(10Q + P) - (10P + Q) = 54
9(Q - P) = 54
(Q - P) = 6 ----- (2)
Solve (1) and (2) P = 1 and Q = 7
The required number is = 17

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Filed Under: Problems on Numbers
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1 4098
Q:

In a city of engineers of 4800, the number of female engineers are 3/8th of them. The number of female engineers is what percentage of the number of male engineers?

A) 76 B) 60
C) 56 D) 52
 
Answer & Explanation Answer: B) 60

Explanation:

Total engineers = 4800

Number of female engineers = 3/8 x 4800 = 1800

Then, number of male engineers = 4800 - 1800 = 3000

Now, required is female engineers is what percentage of the number of male engineers

=> 1800 is what % of 3000

=> p x 3000/100 = 1800

=> 30p = 1800

p = 60%

 

Hence, female engineers is 60 percentage of the number of male engineers.

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Filed Under: Percentage
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6 4095
Q:

Name the two Indian companies that have been named in the list of world's most ethical companies by American think tank Ethisphere Institute.

A) Dabur and Tata B) Mahindra and Tata
C) Patanjali and Dabur D) Tata Steel and Wipro
 
Answer & Explanation Answer: D) Tata Steel and Wipro

Explanation:
      • Two Indian companies, Tata SteelBSE and Wipro have been named in the list of world’s most ethical companies by American think tank Ethisphere Institute.
      • Ethisphere honors those companies who recognize their role in society to influence and drive positive change in the business community and organizations around the world.
      • In 2017, 124 honorees were spanning five continents, 19 countries, and 52 industry sectors.
      • Wipro is one of the two information technology companies named in the list, the other being Xerox Corporation.
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Filed Under: General Awareness
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3 4091
Q:

Which of the following is Not a Greenhouse Gas?

A) Oxygen B) Methane
C) Nitrous Oxide D) Carbondioxide
 
Answer & Explanation Answer: A) Oxygen

Explanation:

A greenhouse gas is a gas in an atmosphere that absorbs and emits radiant energy within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. 

 

Carbon dioxide is a main greenhouse gas, found in car exhaust pipes.
Methane and nitrous oxide is another type of greenhouse gas.



Oxygen is the only clean gas out there because we need it to survive. Therefore, the only gas that is not a greenhouse gas is Oxygen.

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5 4091
Q:

If a barometric reading is falling, this usually indicates what

A) Increasing pressure B) Decreasing pressure
C) No pressure D) None
 
Answer & Explanation Answer: B) Decreasing pressure

Explanation:

A barometer is a tool that measures air pressure

A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure.

In space, there is a nearly complete vacuum, so the air pressure is zero.

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Filed Under: Physics
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6 4090
Q:

Where was India's first F1 circuit built?

A) Jaipur B) Coimbatore
C) Noida D) Chennai
 
Answer & Explanation Answer: C) Noida

Explanation:

Fi circuit refers to Formula One, is the highest class of open-wheeled auto racing defined by FIA, motorsport's world governing body.

 

The Buddh International Circuit is an Indian motor racing circuit in Greater Noida, Uttar Pradesh was India's first F1 circuit.

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Filed Under: General Awareness
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5 4088