Previous year MCQs

General science UPPSC 2007 GS-I
Question

When the TV is switched ON then:

Answer & Solution

Answer: (Detailed Solution Below)

Option C: The visual starts immediately but audio is heard later because the sound travels less than the speed of light

Detailed Solution:

The correct answer is “The visual starts immediately but audio is heard later because the sound travels less than the speed of light”.
Visual signals, such as the image displayed on the screen, can be processed and displayed almost instantly. However, audio signals take a fraction of a second longer to be heard because sound travels at a slower speed than light.

Similar Questions:

Given below are two statements:

Assertion [Al: Human body is incapable of digesting cellulose.
Reason [R]: Starch degrading enzyme, diastase, is found in the human body.

Choose the answer from the code given below:
Codes:
  1. A) Both [A] and [R] are true and [R] is the correct explanation of [A]
  2. B) Both [Al and [R] are true but [RI is not the correct explanation of [A]
  3. C) [A] is true but [R] is false
  4. D) Both [A] and [R] are false
Baglihar power project, on which Pakistan raised an issue to the World bank, was being made by India on which river?
  1. A) Jhelum
  2. B) Indus
  3. C) Chenab
  4. D) Sutlej
On 2nd and 3rd Feb 2007, 10th National E-governance held at the city of:
  1. A) Hyderabad
  2. B) Nagpur
  3. C) Bhopal
  4. D) Bangalore
Match List-I with List-II and select the correct answer from the codes given below the lists:
List-I Pollutants - List-II Effects

A. Carbon monoxide - 1. Damage to liver and kidney
B. Oxides of Nitrogen - 2. Cancer
C. Soil particles - 3. Ailments related to breathing
D. Lead - 4. Central nervous system

Code:
A B C D
  1. A) 2 3 4 1
  2. B) 4 3 2 1
  3. C) 1 2 3 4
  4. D) 3 4 1 2
Which of the following has the highest velocity?
  1. A) Cosmic rays
  2. B) Light
  3. C) Electron
  4. D) Supersonic wave
What will be the next number in the following given series? 12, 6, 18, 9, 26, 13, 36, 18?
  1. A) 46
  2. B) 48
  3. C) 50
  4. D) None of the above
Bhopal Gas Tragedy was caused due to the leakage of:
  1. A) Methyl Isocynate
  2. B) Nitrogen dioxide
  3. C) Sulphur dioxide
  4. D) Carbon monoxide
Which one of the following is not correctly matched:
  1. A) ginger–rhizome
  2. B) saffron–seeds
  3. C) opium–poppy of opium
  4. D) flax–stem
"Threat of global warming" is increasing due to increasing concentration of
  1. A) Ozone
  2. B) Nitrous oxide
  3. C) Sulphur dioxide
  4. D) Carbon dioxide
Dinosaurs were:
  1. A) Cenozoic reptiles
  2. B) Mesozoic birds
  3. C) Palaeozoic amphibia
  4. D) Mesozoic reptiles
Which of the following is not correctly matched ?
  1. A) Vitramin B6 - Rice Bran
  2. B) Vitamin B2 - Cod-liver oil
  3. C) Vitamin E - Wheat Germ Oil
  4. D) Vitamin K - Alfalafa
Which of the following statements is not correct?
  1. A) Air conditioners and air coolers both regulate the temperature
  2. B) Air conditioners and air coolers both regulate the humidity
  3. C) Air condition control humidity but air cooler does not control humidity
  4. D) Both controls the speed of air