Top 100 Important Everyday Science Mcqs Set-12 Page 1

Top 100 Important Everyday Science Mcqs Set-12

1- The SI unit of luminous intensity is:

A. Lux

B. Lumen

C. Watt

D. Candela

View Answer

Answer : D. Candela

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2- Which metal is used as a catalyst in the Haber process for ammonia synthesis?

A. Iron

B. Nickel

C. Platinum

D. Palladium

View Answer

Answer : A. Iron

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3- The part of the human eye that controls the amount of light entering is:

A. Iris

B. Lens

C. Cornea

D. Retina

View Answer

Answer : A. Iris

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4- Which of the following is a good conductor of heat but a bad conductor of electricity?

A. Mica

B. Silver

C. Copper

D. Aluminium

View Answer

Answer : A. Mica

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5- The study of the origin and development of the universe is called:

A. Geology

B. Meteorology

C. Astrology

D. Cosmology

View Answer

Answer : D. Cosmology

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6- Which vitamin is also known as retinol?

A. Vitamin A

B. Vitamin B

C. Vitamin C

D. Vitamin D

View Answer

Answer : A. Vitamin A

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7- The part of the plant that conducts water and minerals is:

A. Xylem

B. Phloem

C. Cambium

D. Epidermis

View Answer

Answer : A. Xylem

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8- The chemical formula of glucose is:

A. C₃H₆O₃

B. C₆H₁₀O₅

C. C₁₂H₂₂O₁₁

D. C₆H₁₂O₆

View Answer

Answer : D. C₆H₁₂O₆

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9- Which planet has the highest number of known natural satellites?

A. Saturn

B. Jupiter

C. Uranus

D. Neptune

View Answer

Answer : A. Saturn

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10- The enzyme that digests fats is called:

A. Pepsin

B. Protease

C. Lipase

D. Amylase

View Answer

Answer : C. Lipase

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11- The process of converting atmospheric nitrogen into a usable form is called:

A. Nitrification

B. Ammonification

C. Denitrification

D. Nitrogen fixation

View Answer

Answer : D. Nitrogen fixation

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12- Which of these is a halogen?

A. Chlorine

B. Sodium

C. Calcium

D. Magnesium

View Answer

Answer : A. Chlorine

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13- The longest bone in the human arm is:

A. Carpals

B. Humerus

C. Ulna

D. Radius

View Answer

Answer : B. Humerus

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14- The unit of magnetic flux is:

A. Tesla

B. Weber

C. Gauss

D. Henry

View Answer

Answer : B. Weber

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15- The disease caused by the deficiency of Vitamin B3 (Niacin) is:

A. Beriberi

B. Rickets

C. Scurvy

D. Pellagra

View Answer

Answer : D. Pellagra

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16- The gas used in the production of margarine is:

A. Oxygen

B. Nitrogen

C. Chlorine

D. Hydrogen

View Answer

Answer : D. Hydrogen

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17- The part of the brain responsible for memory and intelligence is:

A. Medulla

B. Cerebellum

C. Cerebrum

D. Hypothalamus

View Answer

Answer : C. Cerebrum

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18- The most abundant metal in sea water is:

A. Sodium

B. Calcium

C. Potassium

D. Magnesium

View Answer

Answer : A. Sodium

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19- The process of a liquid changing to a gas below its boiling point is:

A. Boiling

B. Evaporation

C. Sublimation

D. Condensation

View Answer

Answer : B. Evaporation

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20- The planet with no atmosphere is:

A. Pluto

B. Mars

C. Venus

D. Mercury

View Answer

Answer : D. Mercury

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