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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The audible range of normal whale ear is _____...?

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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Dielectric constant of water is...?

(A) 60
(B) 70

(C) 80
(D) None of these

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A Rhinoscope (or Nasoscope) is a thin, tube-like instrument used to examine the inside of the_____...?

(A) Eyes
(B) Nose

(C) Ears
(D) Brains

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Radon is___________...?

(A) germon radio
(B) radio active gas

(C) artificial fibre
(D) an explosive

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The human blood is divided into__________ groups...?

(A) Two groups
(B) Three groups

(C) Four groups
(D) Five groups

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The number of spark plugs needed in a diesel engine is ______...?

(A) Zero
(B) 1

(C) 2
(D) 4

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Which one of the following is not a disadvantage of friction...?

(A) Energy loss
(B) Fasteners

(C) Wear and Tear
(D) Speed limit

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Mass of Earth is _____...?

(A) 6.0 x 10^23 kg
(B) 6.0 x 10^24 kg

(C) 6.0 ´ 10^25 kg
(D) 6.0 ´ 10^26 kg

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Special type of movement of specific substances through carrier protein is _____...?

(A) Facilitated diffusion
(B) Active transport

(C) Passive transport
(D) Osmosis

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