Previous year MCQs

General science UPPSC 2015 GS-I
Question

The main pollutant in the smoke coming from cigarette is:

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Carbon monoxide and Benzene

Detailed Solution:

The correct answer is “Carbon monoxide and Benzene”.
Cigarette smoke is a complex mixture of thousands of chemicals, but some of the major pollutants in cigarette smoke include carbon monoxide and benzene, among many others. Carbon monoxide is a toxic gas, and benzene is a known carcinogen (substances that may increase your risk of cancer).

Similar Questions:

One kilowatt-hour equals:
  1. A) 3.6 × 106 J
  2. B) 3.6 × 103 J
  3. C) 103 J
  4. D) 105 J
Which one of the following states launched in February 2015 a "dolphin-census" in the coastal ecosystem and shorelines of the State?
  1. A) Gujarat
  2. B) Karnataka
  3. C) West Bengal
  4. D) Odisha
Under which one of the following Articles, the procedure for removal of the President of India through the process of impeachment has been laid down?
  1. A) Article-53
  2. B) Article-61
  3. C) Article-74
  4. D) Article-13
If an apple is released from an orbiting spaceship, it will
  1. A) Fall towards the Earth
  2. B) Move at a lower speed
  3. C) Move along with the spaceship at the same speed
  4. D) Move at a higher speed
Consider the following statements and select the correct answer from the code given below:

1. Brass is a compound of copper and zinc.
2. Magnetite is the most important ore of aluminium.
3. Amalgam is that substance which basically contains mercury.
4. Potassium nitrate is one of the essential chemicals used in photography.

Code:
  1. A) 1 and 2
  2. B) 1 and 3
  3. C) 2 and 3
  4. D) 1, 3 and 4
Which one of the following pairs is not correctly matched?
  1. A) Fullerenes–organic compounds containing fluorine
  2. B) Dry Ice–Solid carbon dioxide
  3. C) Keratin–protein found in the outer layer of human skin
  4. D) Mustard gas–poisonous liquid used in chemical warfare
An enzyme which helps in the digestion of protein is
  1. A) Urease
  2. B) Ssulfatase
  3. C) Trypsin
  4. D) Protease
The provision for the representation of Anglo Indian community in the Lok Sabha has been made in the Constitution under:
  1. A) Article-331
  2. B) Article-221
  3. C) Article-121
  4. D) Article-139
"Neno plug" refers to:
  1. A) a small bullet
  2. B) a small hearing aid
  3. C) a small rocket launcher
  4. D) None of the above
Salk's vaccine is connected with which one of the following diseases?
  1. A) Small pox
  2. B) Tetanus
  3. C) T.B.
  4. D) Polio
Which of the following is NOT correctly matched?
  1. A) Desalination - Sea water
  2. B) Reverse osmosis - Potable water
  3. C) Denaturation - Proteins
  4. D) Pasteurisation - Tea
Which of the following periods has generally been considered to be the 'Little Ice Age'?
  1. A) 730 A.D. - 850 A.D.
  2. B) 950 A.D. - 1250 A.D.
  3. C) 1650 A.D. - 1870 A.D.
  4. D) 8000 to 10,000 years B.P. (Before Present)