Which one among the following is an example of decomposition reaction...? Mcqs

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Which one among the following is an example of decomposition reaction...?

(A) The formation of hydrogen and oxygen from water
(B) The formation of water from hydrogen and oxygen

(C) The formation of carbon dioxide from carbon and oxygen
(D) The formation of oxygen from nitrogen and oxygen

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Which of the following is solid...?

(A) Water
(B) Stone

(C) Both
(D) None

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Naturally occurring enzyme used as a defense chemical by bacteria ______...?

(A) Defense protein
(B) Restriction enzyme

(C) Hydrolytic enzyme
(D) Ligase enzyme

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The ISS (International Space Station) orbits Earth about once every...?

(A) 60 minutes at an altitude of about 400 km
(B) 60 minutes at an altitude of about 500 km

(C) 90 minutes at an altitude of about 400 km
(D) 90 minutes at an altitude of about 500 km

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What are the primary colors of Light...?

(A) White, Black, Blue
(B) Red, Yellow, Blue

(C) Red, Orange, Blue
(D) Red, Green, Blue

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H5N1 virus is caused of_______...?

(A) AIDs
(B) fever

(C) Bird flu
(D) non

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Steradian is the unit of_______________...?

(A) Solid angle
(B) Liquid angle

(C) Gas angle
(D) Plain angle

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_________ is anything that takes up space and has mass....?

(A) Matter
(B) Gravity

(C) Energy
(D) Plasma

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In which state of matter, the particles arrangement is irregular and less closely packed...?

(A) Solid
(B) Liquid

(C) Gas
(D) None

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What is the primary function of the digestive system...?

(A) Respiration
(B) Circulation

(C) Digestion and absorption of nutrients
(D) Excretion

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