Oxidation is a chemical reaction involving the __________...? Mcqs

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Oxidation is a chemical reaction involving the __________...?

(A) Gain of Electrons
(B) Loss of Electrons

(C) Gain of Protons
(D) Loss of Protons

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Frozen dew is also known as________...?

(A) Frost
(B) Black ice

(C) Frozen ice
(D) Black hail

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The most suitable thermometer for measuring boiling point of water is ...?

(A) Mercury Thermometer
(B) Liquid crystal thermometer

(C) Bimetallic thermometer
(D) Alcohol thermometer

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Which two primary colours are mixed to make purple...?

(A) Red and green
(B) Red and blue

(C) Red and yellow
(D) None of these

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Being Myopic means you have problem in seeing ______________...?

(A) Distant objects clearly
(B) Close objects clearly

(C) Both A and B
(D) Distant and close objects look unclear

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A change in physical appearance or state of a substance is called ____...?

(A) Chemical Change
(B) Physical Change

(C) Nuclear Change
(D) Biological Change

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A chemical change is called a _____...?

(A) Physical Change
(B) Phase Transition

(C) Chemical Interaction
(D) Chemical Reaction

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The solubility of a solute substance increases _____...?

(A) As the liquid cools down
(B) As the liquid becomes more concentrated

(C) As the liquid heats up
(D) As the liquid becomes more diluted

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What is total area of the earth...?

(A) 510.94 million km²
(B) 492.102 million km²

(C) 392.023 million km²
(D) 692.192 million km²

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Which one of the following substances traps sunlight...?

(A) Cellulose
(B) Chlorophyll

(C) Cytoplasm
(D) Cell sap

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