Top 100 Important Everyday Science Mcqs Set-13 Page 3

Top 100 Important Everyday Science Mcqs Set-13

41- The part of the human ear that amplifies sound is:

A. Ossicles

B. Cochlea

C. Eardrum

D. Auditory nerve

View Answer

Answer : A. Ossicles

Description

42- The instrument used to measure the acidity of a solution is:

A. pH meter

B. Thermometer

C. Barometer

D. Hydrometer

View Answer

Answer : A. pH meter

Description

43- The most abundant element in the Earth's crust is:

A. Iron

B. Aluminium

C. Silicon

D. Oxygen

View Answer

Answer : D. Oxygen

Description

44- The process of converting a liquid into a gas is:

A. Boiling

B. Evaporation

C. Condensation

D. Sublimation

View Answer

Answer : B. Evaporation

Description

45- The chemical formula of calcium hydroxide is:

A. CaO

B. CaCO₃

C. CaSO₄

D. Ca(OH)₂

View Answer

Answer : D. Ca(OH)₂

Description

46- The largest desert in the world is:

A. Gobi

B. Kalahari

C. Sahara

D. Arabian

View Answer

Answer : C. Sahara

Description

47- The hormone that controls blood pressure is:

A. Insulin

B. Adrenaline

C. Thyroxine

D. Cortisone

View Answer

Answer : B. Adrenaline

Description

48- The process of converting a gas into a liquid is:

A. Deposition

B. Sublimation

C. Evaporation

D. Condensation

View Answer

Answer : D. Condensation

Description

49- The chemical formula of ethanol is:

A. C₄H₉OH

B. C₃H₇OH

C. C₂H₅OH

D. CH₃OH

View Answer

Answer : C. C₂H₅OH

Description

50- The part of the human brain that controls balance is:

A. Cerebrum

B. Cerebellum

C. Medulla

D. Hypothalamus

View Answer

Answer : B. Cerebellum

Description

51- The instrument used to measure the speed of wind is:

A. Barometer

B. Anemometer

C. Hygrometer

D. Thermometer

View Answer

Answer : B. Anemometer

Description

52- The most abundant gas in the Sun is:

A. Helium

B. Oxygen

C. Carbon

D. Hydrogen

View Answer

Answer : D. Hydrogen

Description

53- The process of converting starch into maltose is:

A. Reduction

B. Oxidation

C. Hydrolysis

D. Dehydration

View Answer

Answer : C. Hydrolysis

Description

54- The chemical formula of sodium chloride is:

A. NaCl

B. Na₂Cl

C. NaCl₂

D. Na₂Cl₂

View Answer

Answer : A. NaCl

Description

55- The largest ocean in the world is:

A. Indian

B. Arctic

C. Pacific

D. Atlantic

View Answer

Answer : C. Pacific

Description

56- The hormone that regulates water balance in the body is:

A. ADH

B. Insulin

C. Thyroxine

D. Adrenaline

View Answer

Answer : A. ADH

Description

57- The process of converting glucose into glycogen is:

A. Glycogenesis

B. Glycogenolysis

C. Gluconeogenesis

D. Lipogenesis

View Answer

Answer : A. Glycogenesis

Description

58- The chemical formula of methane gas is:

A. CH₄

B. C₂H₆

C. C₃H₈

D. C₄H₁₀

View Answer

Answer : A. CH₄

Description

59- The part of the human body that produces bile is:

A. Liver

B. Spleen

C. Pancreas

D. Gall bladder

View Answer

Answer : A. Liver

Description

60- The instrument used to measure the density of milk is:

A. Hydrometer

B. Lactometer

C. Barometer

D. Thermometer

View Answer

Answer : B. Lactometer

Description