The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg...? Mcqs

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The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg...?

(A) 4 days
(B) 12 days

(C) 16 days
(D) 8 days

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The Proportion of Hydrogen to Helium in the Sun is________...?

(A) 3:2
(B) 3:1

(C) 1:1
(D) 3:4

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Keeping of Birds Called___________...?

(A) Apiculture
(B) Aviculture

(C) Viniculture
(D) Viticulture

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Severe deficiency of Vitamin D results in __________....?

(A) scurvy
(B) rickets

(C) night blindness
(D) None of these

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The process in which nuclei of heavy elements are broken into lighter nuclei and produce a large amount of heat energy is called...?

(A) Fusion
(B) Geometry

(C) Regales
(D) Fission

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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is ________ ...?

(A) Argon
(B) Xenon

(C) Helium
(D) Krypton

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The female gametes are fertilized in the rear end of _____...?

(A) Oviduct
(B) Fallopin tube

(C) Ovaries
(D) Both a and b

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Which amongst the following cannot pass through vacuum...?

(A) Light
(B) Radiation

(C) Sound
(D) None of These

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What part of the brain controls thirst and hunger...?

(A) Thalamus
(B) Hypothalamus

(C) Aymgdala
(D) None

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A movable pulley can _______...?

(A) Increase the input force
(B) Decrease the input force

(C) Change the direction of force
(D) Change the speed of force

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