Which one of the following waves are used by the common TV remote control...? Mcqs

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Which one of the following waves are used by the common TV remote control...?

(A) Radio waves
(B) Lasers

(C) Infrared waves
(D) Ultrasonic waves

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Border line which separates outer space from Earth’s atmosphere is known as___________...?

(A) Durand line
(B) Space line

(C) Venus line
(D) Karman line

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A process in which two light nuclei combine to form a heavier nucleus is called...?

(A) Nuclear fusion
(B) Nuclear fission

(C) Beta-decay
(D) Alpha-decay

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What percentage of earth’s water supply is fresh water___________...?

(A) 3%
(B) 5%

(C) 21%
(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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In an acidic medium, bromophenol blue is yellow and in a basic medium, it is ____...?

(A) Blue
(B) Pink

(C) Red
(D) Yellow

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The type of seed production without fusion of male and female gametes is ______...?

(A) Parthenocarpy
(B) Apomixes

(C) Grafting
(D) Scion

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In a compound microscope, as compared to an objective, the eyepiece lens has a focal length _____...?

(A) Zero
(B) Small

(C) Negative
(D) Large

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What is the addictive drug in tobacco ______________...?

(A) Ethanol
(B) Nicotine

(C) Ammonia
(D) Tar

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Each stoma is formed by ______...?

(A) One guard cell
(B) Two guards cells

(C) Three guard cells
(D) Four guard cells

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