When a person enters a dark room from bright light he is not able to see clearly for a little while because the...? Mcqs

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When a person enters a dark room from bright light he is not able to see clearly for a little while because the...?

(A) Eye is unable to adjust itself immediately
(B) Retina becomes insensitive momentarily

(C) Iris is unable to dilate the pupil immediately
(D) Distance between the lens and retina take time to adjust

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On passing through food stuff, X-ray can kill the___________...?

(A) Fungus
(B) Virus

(C) Bacteria
(D) insects

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The chemical name of quartz is:...?

(A) Silicon Dioxide
(B) Stannous Oxide

(C) Aluminium Oxide
(D) None

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NASA’s ________ program aims to land humans on the moon again in 2024....?

(A) Artemis
(B) Arshamedis

(C) Arsenimdo
(D) Bertonies

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A ______ is an inclined plane wrapped around a cylinder, used to fasten objects....?

(A) Screw
(B) Lever

(C) Pulley
(D) Wheel

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Which of the following is the largest planet...?

(A) Neptune
(B) Jupiter

(C) Saturn
(D) Mars

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The heat from Sun reaches to earth in form of waves called _____...?

(A) Conduction
(B) Radiation

(C) Convection
(D) None

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Animals without backbone are called...?

(A) Vertebrates
(B) Invertebrates

(C) Both A and B
(D) None of these

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Which metal is pure conductor of electricity...?

(A) Copper
(B) Gold

(C) Silver
(D) lead

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Which rays are used for sterilization of medical instruments...?

(A) α-rays
(B) β-rays

(C) γ-rays
(D) x-rays

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