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Learn SSC CGL MCQs with answers [Page 1 of Department 148]

R

Ram Sharma • 178.08K Points
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1) When there are two electrons in the same orbital, they have:

(A) opposite spin
(B) no spin
(C) same or opposite spin
(D) same spin
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

2) The filter over which sewage is sprinkled is called as

(A) Percolating filter
(B) Trickling filter
(C) Intermittent sand filter
(D) Contact bed
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

3) One can distinguish a telescope from a microscope by observing

(A) length
(B) size of the lens
(C) colour
(D) length & size of the lens
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

4) Green house effect is the heating up of the Earth's atmosphere which is due to

(A) g-rays
(B) the ultraviolet rays
(C) the infra-red rays
(D) X-rays
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

6) Which among the given laws validates the statement that matter can neither be created nor destroyed -

(A) Law of conservation of energy
(B) Law of conservation of mass
(C) Le Chatelier's Principle
(D) Law of osmosis
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

8) The main constituent of biogas is

(A) acetic acid
(B) methane
(C) oxygen
(D) methyl alcohol
Correct Answer - Option (B)

Explanation :
The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia. Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

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R

Ram Sharma • 178.08K Points
Coach

9) What happens when a chemical bond is formed

(A) energy in always released
(B) energy is neither released nor absorbed
(C) energy is always absorbed
(D) more energy is released than is absorbed
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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