The isotope C-12 is present in abundance of _______...? Mcqs

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The isotope C-12 is present in abundance of _______...?

(A) 96.9%
(B) 97.6%

(C) 98.8%
(D) 99.7%

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Medium which sends signal from source to destination is known as ________ ...?

(A) Transmitter
(B) Transmission channel

(C) Receiver
(D) Hardware

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Deficiency of Vitamin-A results in __________...?

(A) Night blindness
(B) rickets

(C) scurvy
(D) hair fall

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What is the breathing rate of human being body...?

(A) 15-11 minutes
(B) 16-20 minutes

(C) 25-26 minutes
(D) 32-35 minutes

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Plants prepare their food in the presence of...?

(A) Hydrogen
(B) Sunlight

(C) Nitrogen
(D) Both A and C

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What is the 2nd closest galaxy to the Milky Way...?

(A) Triangulum
(B) Andromeda

(C) Messier 81
(D) Whirlpool

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Select the mismatched one of the followings...?

(A) Plastids → Storage of chemicals
(B) Centriole → Help in cell division

(C) Ribosomes → Synthesis of steroids
(D) Mitochondria → Synthesis of ATP

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The process of separation of an insoluble solid from a liquid by passing it through filter paper is called...?

(A) Filtration
(B) Decantation

(C) Sedimentation
(D) Centrifugation

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Day and night are the results of__________...?

(A) Earth rotation around its axis
(B) Earth revolution

(C) Earth rotation accompanied with its revolution.
(D) None of these

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Addition reaction is also known as ____...?

(A) Combination Reaction
(B) Synthesis Reaction

(C) Decomposition Reaction
(D) Both A and B

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