Previous year MCQs

General science UPPSC 2008 GS-I
Question

When does heart rest?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Never

Detailed Solution:

The correct answer is “Never”.
The heart never rests because it has cardiac muscles that don't fatigue.

Similar Questions:

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
Main function of Dynamo is?
  1. A) To convert the mechanical energy into electric energy
  2. B) To convert the electric into mechanical energy
  3. C) High potential producing equipment
  4. D) Low potential producing equipment
Who has been given the "Cricketer of the year Award" by the ICC in September 2008?
  1. A) D. Steyn
  2. B) G. Smith
  3. C) S. Chanderpaul
  4. D) S. Tendulkar
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): Maximum number of the species of butterflies are found in tropical countries.
Reason (R): Butterflies can not tolerate low temperatures.

Select the correct answer using 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
Which one of the following is not correctly matched? Pollutant – Disease caused
  1. A) Mercury – Minamata disease
  2. B) Cadmium – Itai-Itai disease
  3. C) Nitrate Ion – Blue baby syndrome
  4. D) Fluoride Ion – Indigestion
Which of the following was invented by Wilhelm Roentgen?
  1. A) Radio
  2. B) X-Ray Machine
  3. C) Electric Bulb
  4. D) None of the above
Pencil lead is:
  1. A) graphite
  2. B) charcoal
  3. C) lamp blac
  4. D) coal
Cholestrol is
  1. A) an insecticide
  2. B) a vitamin
  3. C) a steroid
  4. D) an enzyme
Television signals cannot be received beyond a certain distance because:
  1. A) Signals are weak
  2. B) Antenna is weak
  3. C) Air absorbs signals
  4. D) The surface of the earth is curved
Bauxite is an ore of:
  1. A) Lead
  2. B) Aluminium
  3. C) Zinc
  4. D) Copper
The "blue moon" phenomenon occurs:
  1. A) When two full moons occur in the same month
  2. B) When four full moons appear in two consecutive months of the same calendar year.
  3. C) when two full moons appear in the same month thrice in a calendar year
  4. D) None of the above.
The filament of an electric bulb is made of:
  1. A) Magnesium
  2. B) Iron
  3. C) Nichrome
  4. D) Tungsten