Previous year MCQs

General science UPPSC 2004 GS-I
Question

The gas which is believed to be the main cause of explosion in the coal mines is:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Methane

Detailed Solution:

The correct answer is “Methane”.
Methane is highly flammable and can form explosive mixtures with air, making it a significant hazard in coal mining operations.

Similar Questions:

The Minamata disease of Japan in 1953 was caused by eating fish contaminated by:
  1. A) Nickel
  2. B) Lead
  3. C) Mercury
  4. D) Cadmium
The "universal donor" is a person whose blood-group is:
  1. A) A
  2. B) B
  3. C) AB
  4. D) O
Change in the base sequence within the germ is called:
  1. A) breeding
  2. B) mutation
  3. C) cloning
  4. D) fusion
Match List-I with List-II and select the correct answer by using the codes given below the lists:
List-I List-II

A. EEG - 1. Muscle
B. ECG - 2. Eye
C. EOG - 3. Brain
D. EMG - 4. Heart

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 3 4 2 1
  3. C) 2 3 4 1
  4. D) 4 3 1 2
Who among the following was the chief architect of reconciliation between the Extremists and the Moderates?
  1. A) Annie Beasant
  2. B) M.A. Jinnah
  3. C) Madam Cama
  4. D) Pheroz Shah Mehta
In which of the following types of heat engines carburettor is used ?
  1. A) Both diesel and petrol engines
  2. B) Steam engine
  3. C) Petrol engine
  4. D) Diesel engine
Which one of the following is a natural polymer?
  1. A) Bakelite
  2. B) Silk
  3. C) Kevlar
  4. D) Lexan
Brain diseases are diagnosed by
  1. A) ECG
  2. B) EEG
  3. C) EMG
  4. D) EKG
According to J.V. Narlikar which of the following has so far NOT been considered as a science?
  1. A) Astrology
  2. B) Astronomy
  3. C) Cosmology
  4. D) Nanotechnology
Study of Zoology deals with:
  1. A) Living animals only
  2. B) Living plants only
  3. C) Both living and dead animals
  4. D) Both living and dead plants
Sleep apnea IS a serious sleep disorder, in which people:
  1. A) Walk during sleep without knowing what he or she is doing.
  2. B) Sleep with eyelids half open.
  3. C) Briefly and repeatedly stop breathing during sleep.
  4. D) Make loud snoring sound while a sleep.
Poona Pact was signed between:
  1. A) Gandhiji and Lord Irwin
  2. B) Gandhiji and Jinnah
  3. C) Gandhiji and Subhash Chandra Bose
  4. D) Gandhiji and Ambedkar