Previous year MCQs

General science UPPSC 2001 GS-I
Question

Consider the following statements:

1. Fibre optics is based on the principle of total internal reflection.
2. In optical fibre communication system power consumption is extremely low.
3. Optical fibre communications are free from radio frequency interference.
4. In India, Reliance group of Industries is engaged in the manufacture of optical fibre.

Of these statements:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: 1, 2 and 3 are correct

Detailed Solution:

The correct answer is “1, 2 and 3 are correct”.
The correct answer is (1) 1, 2 and 3 are correct.

Reliance group of Industries is not known for manufacturing optical fibre. Companies like Sterlite Technologies, Birla Furukawa Fibre Optics, and Vindhya Telelinks are prominent in optical fibre manufacturing in India.

Similar Questions:

Alexanders success in India was due to:

1. There was no central power in India
2. He had a superior army
3. He received help from the traitorous Indian rulers
4. He was a good administrator

Select your answer from the following code:
Codes:
  1. A) 1 and 2
  2. B) 1, 2 and 3
  3. C) 2, 3 and 4
  4. D) All of these
The reason for stinging smell near the urinals is:
  1. A) Sulphur dioxide
  2. B) Chlorine
  3. C) Ammonia
  4. D) Urea
As compared to boiling water, steam causes more burn to the hand because of
  1. A) Steam has latent heat
  2. B) Steam enters in the body
  3. C) Steam has more orbit
  4. D) Steam is light weight
Which one of the following is not an explosive?
  1. A) Trinitrotoluene
  2. B) Trinitroglycerine
  3. C) Cyclotrimethylene Trinitramine
  4. D) Nitrochloro chloroform
Which one of the following is used as the coolant in the "Fast Breeder Test Reactor" at Kalpakkam?
  1. A) Carbon dioxide
  2. B) Heavy water
  3. C) Sea water
  4. D) Molten sodium
Match list-I with list-II and select the correct answer using the code given below:
List-I (Radioisotope) - List-II (Diagnostic use)

A. Arsenic - 74 - 1. Activity of thyroid gland
B. Cobalt - 60 - 2. Blood disorder
C. Iodine-131 - 3. Tumor
D. Sodium-24 - 4. Cancer

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 4 3 1 2
  3. C) 3 4 1 2
  4. D) 4 3 2 1
Match list-I with list-II and select the correct answer using the code given below:
List-I - List-I

A. Malaria - 1. Bone Marrow
B. Filaria - 2. Brain
C. Encephalitis - 3. Muscle
D. Leukemia - 4. Lymph node
5. Blood cells

Code:
A B C D
  1. A) 5 3 2 1
  2. B) 5 4 2 1
  3. C) 4 3 5 1
  4. D) 5 4 1 2
Genome mapping relates to:
  1. A) blood grouping
  2. B) mapping of genes
  3. C) mapping of nerve centers
  4. D) mapping of brain
The disease caused by nematodes is:
  1. A) Filaria
  2. B) Fluorosis
  3. C) Encephalitis
  4. D) Leprosy
Seaweeds are important source of
  1. A) Iodine
  2. B) Bromine
  3. C) Chlorine
  4. D) Argon
Bronze (Brass) is a combination of?
  1. A) Tin + Silver
  2. B) Tin + Zinc
  3. C) Tin + copper
  4. D) Zinc + Copper
Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) :

Assertion (A): Invert sugar is more sweeter than sucrose.
Reason (R) : Invert sugar is obtained by the hydrolysis of sucrose.

Select the correct answer from the codes given below.
Codes :
  1. A) Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. B) Both (A) and (R) are true but (R) is not the correct explanation of (A)
  3. C) (A) is true but (R) is false
  4. D) (A) is false but (R) is true