The lowest zone of atmosphere containing about seventy five percent of total mass of atmosphere and ninety percent of its water vapour is called...? Mcqs

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The lowest zone of atmosphere containing about seventy five percent of total mass of atmosphere and ninety percent of its water vapour is called...?

(A) Troposphere
(B) Lonosphere

(C) Aerosphere
(D) Stratosphere

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Magnetic tap is a ___...?

(A) Serial access medium
(B) Universal access medium

(C) Random access medium
(D) None of these

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Who discovered the first vaccine...?

(A) Edward Jenner
(B) Einstein

(C) Albert Sabin
(D) Jonas Salk

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The planet nearest to the sun is:...?

(A) Jupiter
(B) Saturn

(C) Mercury
(D) Earth

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Rainfall is measured using a...?

(A) Salinometer
(B) Rainoscope

(C) Rain gauge
(D) Rainometer

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What is the energy formed due to waterfall:...?

(A) Potential Energy
(B) Kinetic Energy

(C) Motion Energy
(D) None of these

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Which chemical element has properties of a metal and no metals...?

(A) Metalloid
(B) Lanthanoid

(C) Actanoid
(D) Graphite

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The ozone layer is at height of _________kilometers from the surface of the Earth....?

(A) 45-40 kilometers
(B) 35-40 kilometers

(C) 15-40 kilometers
(D) reflects back radio waves

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Which one of the following is unit of length:...?

(A) Joule
(B) Angstrom

(C) Newton
(D) Dalton

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Shape of the Milky Way Galaxy is...?

(A) Rectangular
(B) Spiral

(C) Elliptical
(D) Circular

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