The importance of perspiration is to ___________...? Mcqs

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The importance of perspiration is to ___________...?

(A) Eliminate body odours
(B) Improve the general health

(C) Open the pores in the skin
(D) Regulate body temperature

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The Boolean expression of an OR gate is ______...?

(A) A . B
(B) A + B

(C) A x B
(D) None of these

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Which of the following is helpful for removal of permanent hardness...?

(A) Na2CO3
(B) Ca(OH)2

(C) CaCO2
(D) Na2SO4

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Which of the following factor does not affect the pressure of the gas in a container...?

(A) Temperature
(B) Volume

(C) Density of gas
(D) Container material

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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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Plants make their own food using...?

(A) CO2 & water
(B) Sunlight

(C) Chlorophyll
(D) Photosynthesis

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The fluid part of blood is known as __________...?

(A) plasma
(B) platelets

(C) blood cells
(D) None of these

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Which process is used to get back the solid substances from a solution...?

(A) Crystallization
(B) Distillation

(C) Filtration
(D) Sublimation

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Microphone converts sound energy into ___________...?

(A) Microwaves
(B) Electrical signals

(C) Optical Signals
(D) Heat energy

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During the night time, the air above the land loses heated up its density ____...?

(A) Decrease
(B) Fluctuate

(C) Remain same
(D) Increase

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