10 Important General Science MCQs for most of the competitive exams
Que 1: Veins seen in the leaves serve the function of
(A) Photosynthesis
(B) Transpiration
(C) Storage
(D) Conduction
Correct Ans: D
Que 2: For a person having Hypermetropia , the near point is
(A) Greater than 25
(B) Greater than 50
(C) Less than 25
(D) Infinity
Correct Ans: A
Que 3: The BOD value of water indicate the
(A) Amount of organic debris
(B) Amount of oxygen used for biochemical oxidation
(C) Amount of oxygen used for biochemical reduction
(D) Amount of ozones used for biochemical oxidation
Correct Ans: B
Que 4: If the pressure is closed vessel is reduced by drawing out some gas , the mean free path of gas molecules will
(A) Increase or decrease upon the nature of the gas
(B) Increase
(C) Remain unchanged
(D) Decrease
Correct Ans: B
Que 5: Which of the following process are associated with plants during dark period ?
(A) Photosynthesis and Respiration
(B) Respiration and Transpiration
(C) Transpiration and conduction
(D) Conduction and Respiration
Correct Ans: D
Que 6: The S.I. unit of Pressure is:
(A) Newton
(B) Kg/m³
(C) Pascal
(D) Joule
Correct Ans: C
Que 7: Why are pickles stored in plastic containers or glass bottles and not in Aluminium containers?
(A) Because when placed in glass & plastic containers we can see what is inside.
(B) Plastic & glass containers are light and easy to handle.
(C) Plastic & glass containers can be recycled after use.
(D) Because Aluminium metal reacts chemically with the acid present in pickles.
Correct Ans: D
Que 8: The major contributor to global warming is
(A) SO2
(B) CO
(C) CO2
(D) CFC
Correct Ans: C
Que 9: The average distance of the planet Mars from the Sun is 141,600,000 miles. This can be represented using standard form as
(A) 1.416 × 10^9 miles
(B) 0.1416 × 10^9 miles
(C) 14.16 × 10^7 miles
(D) 1.416 × 10^8 miles
Correct Ans: D
Que 10: Genes are located on –
(A) Mitochondria
(B) Chromosomes
(C) Plastids
(D) Nuclear membrane
Correct Ans: B
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