The reaction between methane and chlorine in diffused sunlight is__________...? Mcqs

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The reaction between methane and chlorine in diffused sunlight is__________...?

(A) Oxidation
(B) Reduction

(C) Polymerisation
(D) Radical substitution

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Dielectric constant of water is...?

(A) 60
(B) 70

(C) 80
(D) None of these

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Pig iron is also called________...?

(A) Cast iron
(B) Steel

(C) Wrought iron
(D) Stainless steel

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When the moon and the sun are on opposite side of the earth, we see a _____...?

(A) New Moon
(B) Full Moon

(C) Half Moon
(D) None

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The cold war between the organisms of a community occupying the same habitat is called _____...?

(A) Predation
(B) Competition

(C) Mutualism
(D) Commensalism

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Friction can be reduced by changing from _________...?

(A) Rolling to sliding
(B) Sliding to rolling

(C) Dynamic to static
(D) Potential energy to kinetic energy

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Iodised salts contains the iodine salts of which metal...?

(A) Iodine
(B) Potassium

(C) Sodium Chloride
(D) Chlorine

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The material that comes out of a volcano at the time of eruption is:...?

(A) Solid, liquid, gaseous
(B) Solid and liquid

(C) Solid and gaseous
(D) None of these

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The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________...?

(A) Conduction of heat upward from a hot surface
(B) Convection from a hot surface

(C) Absorption of infrared energy that has been radiated from the surface
(D) Heat energy from the earth’s interior

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What is the element required for solar energy conversion ______...?

(A) Ultra pure carbon
(B) Silicon

(C) Beryllium
(D) Tantalum

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