Previous year MCQs

General science UPPSC 2013 GS-I
Question

Photosynthesis using the invisible part of the sunlight is done by some

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Bacteria

Detailed Solution:

The correct answer is “Bacteria”.
Bacteria can photosynthesize using the near-infrared component of sunlight.

Similar Questions:

Consider the following events.

1. First reptiles
2. First insects
3. Shelled animals
4. First mammals

Arrange the above events in Chronological order of their origin on the earth and select the correct answer from the codes given below:

Codes:
  1. A) 2 1 3 4
  2. B) 2 3 1 4
  3. C) 3 2 1 4
  4. D) 2 4 1 3
To look total image of a person, the minimum height of a plane mirror is:
  1. A) Equal to the height of a person.
  2. B) Half of the height of a person.
  3. C) One fourth of the height of a person.
  4. D) Two times the height of a person.
According to a recent news (March 2013) the Indian Space Research Organisation (ISRO) and United States Space Agency NASA, have agreed to form a working group for cooperation in which of the following endeavours?
  1. A) Moon and Mars Missions of future
  2. B) Meteorology and Space Exploration
  3. C) Heliophysics
  4. D) All the above
Which one of the following is the main constituent of LPG ?
  1. A) Hexane
  2. B) Pentane
  3. C) Butane
  4. D) Methane
The reason of mirage is
  1. A) Interference of light
  2. B) Diffraction of light
  3. C) Polarisation of light
  4. D) Total internal reflection of light
Wireless communication is reflected to earth’s surface by
  1. A) Troposphere
  2. B) Stratosphere
  3. C) Ionosphere
  4. D) Exosphere
Seaweeds are important source of
  1. A) Iodine
  2. B) Bromine
  3. C) Chlorine
  4. D) Argon
Which one of the following silver salts is used for producing artificial rains?
  1. A) Silver chloride
  2. B) Silver bromide
  3. C) Silver nitrate
  4. D) Silver iodide
Assertion (A): Some bacteria can synthesise their own food.
Reason (R): These bacteria have green matter called chloroplasts.

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 chemicals helps in fruit ripening?
  1. A) Ethephon
  2. B) Atrazine
  3. C) Isoproturan
  4. D) Malathion
Consider the following statements:

Assert ion (A): Earnest Rutherford asserted before the Royal Society that man will never get nuclear power.
Reason (R): He was sure that Einstein's law will fail and mass will not be converted into energy.

Select your answer from the coding scheme given below:
  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
  3. C) (A) is true and (R) is false
  4. D) (A) is false but (R) is true
Which one of the following is a rich source of iron?
  1. A) Carrot
  2. B) Pea
  3. C) Rice
  4. D) Spinach