The atmospheric air is held to the Earth by...? Mcqs

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The atmospheric air is held to the Earth by...?

(A) gravity
(B) winds

(C) clouds
(D) rotation of the Earth

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Atmospheric pressure is calculated by the ____...?

(A) Height of water column in a pipette
(B) Volume of gas in a cylinder

(C) Resistance in an electric circuit
(D) Height of mercury column in barometer

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Which of the following vitamin is known as Niacin...?

(A) vitamin B-6
(B) vitamin B-12

(C) vitamin B-1
(D) vitamin B-3

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The outer part of DNA helix made up of sugar and phosphate is called ______...?

(A) Nucleoprotein
(B) Rungs

(C) Upright
(D) Phosphoester

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Deuterium differs from Hydrogen in having:...?

(A) Different atomic number but same atomic weight
(B) Different atomic number and different atomic weight

(C) Same atomic number and different atomic weight
(D) None

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How many chambers are in the human heart ...?

(A) 02
(B) 03

(C) 04
(D) 05

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Which of the following is commonly called a polyamide ...?

(A) Rayon
(B) Nylon

(C) Terylene
(D) Orion

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The distance between two successive crests or troughs of a wave is called ______...?

(A) Frequency
(B) Amplitude

(C) Velocity
(D) Wavelength

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Bones Ash contain...?

(A) calcium sulphate
(B) phosphoric sulphate

(C) Calcium sulphate
(D) None of these

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The primary function of the feathers in birds is to _________...?

(A) Provide insulation for preserving body heat
(B) Provide striking surface to the wings for flying

(C) Make the body surface waterproof
(D) impart coloration for species as well as sex recognition

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