Previous year MCQs

Aptitude & Reasoning UPPSC 1998 GS-I
Question

5 and 20 are two number. Their geometric mean will be:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: 10

Detailed Solution:

The correct answer is “10”.
The geometric mean of two numbers, a and b, is the square root of their product. Therefore, the answer is (1) 10.

Similar Questions:

Which one of the following energy conversions takes place in carrying out the process of photosynthesis?
  1. A) light to chemical energy
  2. B) light to thermal energy
  3. C) thermal to biochemical energy
  4. D) heat to kinetic energy
If area of a circle with radius V is C- and area of a square with each side equal to twice the radius of the circle is S. Then:
  1. A) C is less than S
  2. B) C is greater than S
  3. C) C = S
  4. D) C= 3/4 S
The population of a town is 17,71,561. If it had been increasing at 10% per annum, its population 6 years ago was:
  1. A) 13,31,000
  2. B) 12,10,000
  3. C) 11,00.000
  4. D) 10,00,000
The biggest contribution to air pollution in Calcutta is:
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  2. B) power plants
  3. C) small scale industrial units
  4. D) tanneries
A bus covers the first half of a certain distance with speed v1 and the second half with a speed v2. The average speed during the whole journey is:
  1. A) v1v2/(v1+v2)
  2. B) 2v1v2/(v1+v2)
  3. C) (v1+v2)/2
  4. D) √v1v2
Match List-I with List-II and select the correct answer by using the codes given below the List:
List-I - List-II

A. Manganese - l. Orissa
B. Asbestos - 2. Madhya Pradesh
C. Nickel - 3. Rajasthan
D. Zinc - 4. Andhra Pradesh


Codes:
A B C D
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  2. B) 4 3 2 1
  3. C) 3 4 1 2
  4. D) 2 4 1 3
A circular road runs around a circular garden. If the difference between the circumferences of the inner circle and the outer circle is 44 meters, the width of the road is:
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  2. B) 3.5 meter
  3. C) 6.0 meter
  4. D) 7.0 meter
Suchitra is taller than pushpa. But shorter than Malti Geeta is shorter than Viji and Viji is not as tall as Pushpa. Who will be in the middle if they stand in a row, according to their height?
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  2. B) Suchitra
  3. C) Pushpa
  4. D) Viji
Which one of the following works has recently been made into a full length film?
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  2. B) Salman Rushdie's Midnight's Children
  3. C) Vikram Seth's A Suitable boy
  4. D) Upmanyu chatterjee's English August
If the highest four digit number is subtracted from the lowest five digit number, the remainder will be:
  1. A) 1
  2. B) 9998
  3. C) 9009
  4. D) 8999
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  1. A) 280
  2. B) 320
  3. C) 360
  4. D) 400
If 10, 20,31, A, 56, 70 is a series then what is the value of A?
  1. A) 42
  2. B) 43
  3. C) 44
  4. D) None of the above