Top 100 Important Everyday Science Mcqs Set-14

61- The chemical formula of lead sulphate is:

A. Pb₂SO₄ 
B. PbSO₄
C. Pb(SO₄)₂ 
D. Pb₂(SO₄)₃

Answer : B. PbSO₄

62- The part of the human body that produces saliva is:

A. Teeth
B. Tongue
C. Salivary glands
D. Mouth

Answer : C. Salivary glands

63- The instrument used to measure the thermal conductivity of a material is:

A. Pyrometer
B. Calorimeter
C. Thermal conductivity meter
D. Thermometer

Answer : C. Thermal conductivity meter

64- The most abundant element in the Earth's hydrosphere is:

A. Oxygen
B. Hydrogen
C. Sodium
D. Chlorine

Answer : B. Hydrogen

65- The process of converting glucose into energy is:

A. Fermentation
B. Digestion
C. Cellular respiration
D. Photosynthesis

Answer : C. Cellular respiration

66- The chemical formula of calcium phosphate is:

A. Ca₃(PO₄)₃
B. Ca(PO₄)₂ 
C. Ca₃(PO₄)₂ 
D. Ca₂(PO₄)₂

Answer : C. Ca₃(PO₄)₂

67- The largest fish in the world is:

A. Whale shark
B. Great white shark 
C. Manta ray
D. Giant squid

Answer : A. Whale shark

68- The hormone that regulates the menstrual cycle is:

A. Insulin
B. Estrogen
C. Progesterone
D. Testosterone

Answer : B. Estrogen

69- The process of converting amino acids into glucose is:

A. Glycolysis
B. Lipogenesis
C. Glycogenesis
D. Gluconeogenesis

Answer : D. Gluconeogenesis

70- The chemical formula of calcium nitrate is:

A. CaNO₃ 
B. Ca(NO₃)₂
C. Ca(NO₃)₃
D. Ca₂NO₃ 

Answer : B. Ca(NO₃)₂

71- The part of the human body that produces sweat is:

A. Sweat glands
B. Sebaceous glands 
C. Salivary glands 
D. Mammary glands

Answer : A. Sweat glands

72- The instrument used to measure the concentration of a gas is:

A. Spectrometer
B. Photometer
C. Refractometer
D. Gas chromatograph

Answer : D. Gas chromatograph

73- The most abundant element in the Earth's atmosphere is:

A. Argon
B. Oxygen
C. Nitrogen
D. Carbon dioxide

Answer : C. Nitrogen

74- The process of converting glucose into fructose is:

A. Hydrolysis
B. Isomerization
C. Oxidation
D. Dehydration

Answer : B. Isomerization

75- The chemical formula of magnesium nitrate is:

A. MgNO₃ 
B. Mg(NO₃)₂
C. Mg₂NO₃
D. Mg(NO₃)₃

Answer : B. Mg(NO₃)₂

76- The largest lizard in the world is:

A. Iguana
B. Chameleon
C. Monitor lizard
D. Komodo dragon

Answer : D. Komodo dragon

77- The hormone that regulates the immune system is:

A. Thymosin
B. Insulin
C. Thyroxine
D. Adrenaline

Answer : A. Thymosin

78- The process of converting pyruvate into glucose is:

A. Glycolysis
B. Glycogenesis
C. Lipogenesis
D. Gluconeogenesis

Answer : D. Gluconeogenesis

79- The chemical formula of zinc nitrate is:

A. Zn(NO₃)₃
B. Zn₂NO₃ 
C. ZnNO₃ 
D. Zn(NO₃)₂

Answer : D. Zn(NO₃)₂

80- The part of the human body that produces tears is:

A. Salivary glands 
B. Lacrimal glands
C. Sweat glands 
D. Sebaceous glands

Answer : B. Lacrimal glands

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