More than 50% of the Earth’s crust consists of ______ plains....? Mcqs

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More than 50% of the Earth’s crust consists of ______ plains....?

(A) Abyssal
(B) Indus

(C) Low land
(D) None of these

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Rectified spirit contains alcohol about ...?

(A) 80%
(B) 95%

(C) 70%
(D) 85%

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Gel electrophoresis is used in...?

(A) Amplifying DNA
(B) Sequencing DNA

(C) Separating DNA fragments on the basis of size
(D) Cloning DNA

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Erythrocyte is another name for a ___________...?

(A) white blood Cells
(B) Platelet

(C) Red Blood cells
(D) Plasma

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What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ...?

(A) Radium dating
(B) Uranium dating

(C) Carbon dating
(D) Deuterium dating

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speed of sound in dry air at 20 °C is___________...?

(A) 353 m/s
(B) 345 m/s

(C) 343 m/s
(D) none of them

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Which of the following is called as Blue planet...?

(A) Mercury
(B) Earth

(C) Venus
(D) Neptune

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Enzymes are ______...?

(A) Steroid in nature
(B) Protein in nature

(C) Lipid in nature
(D) Carbohydrate in nature

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Kidney disease happens due to overdose of...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin C
(D) Proteins

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What do friction forces between the air and a moving object cause...?

(A) Speed increase
(B) Weight decrease

(C) Resistance
(D) Energy gain

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