Top 100 Important Everyday Science Mcqs Set-13 Page 1

Top 100 Important Everyday Science Mcqs Set-13

1- The SI unit of capacitance is:

A. Farad

B. Henry

C. Weber

D. Tesla

View Answer

Answer : A. Farad

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2- Which gas is used in the production of welding flames?

A. Oxygen and acetylene

B. Hydrogen and nitrogen

C. Methane and oxygen

D. Propane and butane

View Answer

Answer : A. Oxygen and acetylene

Description

3- The part of the human ear that detects sound vibrations is:

A. Pinna

B. Cochlea

C. Eardrum

D. Auditory nerve

View Answer

Answer : B. Cochlea

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4- The process of converting glucose into energy in cells is called:

A. Digestion

B. Fermentation

C. Photosynthesis

D. Cellular respiration

View Answer

Answer : D. Cellular respiration

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5- The most abundant element in the universe is:

A. Carbon

B. Helium

C. Oxygen

D. Hydrogen

View Answer

Answer : D. Hydrogen

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6- The chemical formula of citric acid is:

A. C₆H₈O₇

B. C₂H₄O₂

C. C₃H₆O₃

D. C₄H₆O₅

View Answer

Answer : A. C₆H₈O₇

Description

7- The layer of the atmosphere that contains the ozone layer is:

A. Stratosphere

B. Troposphere

C. Mesosphere

D. Thermosphere

View Answer

Answer : A. Stratosphere

Description

8- The largest gland in the human body is:

A. Liver

B. Thyroid

C. Pancreas

D. Pituitary

View Answer

Answer : A. Liver

Description

9- The unit of radioactivity is:

A. Volt

B. Curie

C. Ampere

D. Coulomb

View Answer

Answer : B. Curie

Description

10- The process by which plants convert nitrogen into usable form is:

A. Nitrification

B. Ammonification

C. Denitrification

D. Nitrogen fixation

View Answer

Answer : D. Nitrogen fixation

Description

11- The chemical formula of phosphoric acid is:

A. H₄PO₄

B. HPO₄

C. H₃PO₄

D. H₂PO₄

View Answer

Answer : C. H₃PO₄

Description

12- The part of the kidney that filters blood is:

A. Ureter

B. Bladder

C. Nephron

D. Urethra

View Answer

Answer : C. Nephron

Description

13- The instrument used to measure the refractive index of a substance is:

A. Spectrometer

B. Refractometer

C. Photometer

D. Polarimeter

View Answer

Answer : B. Refractometer

Description

14- The largest canyon in the solar system is on:

A. Earth

B. Mars

C. Venus

D. Mercury

View Answer

Answer : B. Mars

Description

15- The process of converting starch into sugars is:

A. Reduction

B. Oxidation

C. Dehydration

D. Hydrolysis

View Answer

Answer : D. Hydrolysis

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16- The chemical formula of potassium permanganate is:

A. KMnO₄

B. K₂MnO₄

C. KMnO₃

D. K₂MnO₃

View Answer

Answer : A. KMnO₄

Description

17- The hormone that stimulates growth in plants is:

A. Auxin

B. Gibberellin

C. Cytokinin

D. Ethylene

View Answer

Answer : A. Auxin

Description

18- The SI unit of torque is:

A. Watt

B. Joule

C. Pascal

D. Newton-meter

View Answer

Answer : D. Newton-meter

Description

19- The most abundant salt in sea water is:

A. Calcium sulphate

B. Potassium bromide

C. Sodium chloride

D. Magnesium chloride

View Answer

Answer : C. Sodium chloride

Description

20- The process by which rocks are broken down by wind and water is:

A. Erosion

B. Weathering

C. Deposition

D. Lithification

View Answer

Answer : A. Erosion

Description