When sound waves travel from air to water which of the following quantities remains unchanged...? Mcqs

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When sound waves travel from air to water which of the following quantities remains unchanged...?

(A) Speed
(B) Frequency

(C) Intensity
(D) Wavelength

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Adult human brain is about_________% of the total body weight....?

(A) 2%
(B) 3%

(C) 7%
(D) 8%

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The planet which is easily visible from the Earth is...?

(A) Mercury
(B) Venus

(C) Mars
(D) Jupiter

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Epsom salt is chemically known as_________...?

(A) Copper Sulfate
(B) Magnesium Sulfate

(C) Ferrous Sulfate
(D) None of these

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Which gas does a Photocopier machine produce...?

(A) Ozone
(B) carbon dioxide

(C) Sulfur dioxide
(D) None of these

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Alzheimer’s disease is a _________ disorder....?

(A) Genetic
(B) Brain

(C) Eye
(D) Body Weight Loss

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Disease causing microorganism are referred to an:...?

(A) Viruses
(B) Pathogens

(C) Coliform Bacteria
(D) All of these

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The extremely cold temperatures in the polar region of moon mean that it can act as a kind of __________ where things do not undergo much change....?

(A) Time capsule
(B) Light capsule

(C) Meta capsule
(D) Natural capsule

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Which of the following is used as a lubricant...?

(A) Graphite
(B) Silica

(C) Iron oxide
(D) Diamond

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In which organism, the human insulin is inserted for the commercial preparation of insulin...?

(A) Algae
(B) Fungi

(C) Bacteria
(D) Virus

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