During rainy season Wooden doors are difficult to open or closure because of ________ ...? Mcqs

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During rainy season Wooden doors are difficult to open or closure because of ________ ...?

(A) Plasmolysis
(B) Imbibition

(C) Osmosis
(D) Diffusion

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The large dark patches on the Moon’s surface are known as___________...?

(A) Dark matter
(B) Maria, or seas, even though there is no water on the Moon

(C) Maria, or seas, because they are filled with water
(D) Moon spots

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Which of the following gas mainly responsible for ozone layer depletion...?

(A) Chlorofluorocarbon
(B) CO2

(C) Nitrogen oxide
(D) Sulphur dioxide

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The chemical name of “Acid” (Tezaab) is___________...?

(A) Sulfuric acid
(B) Sodium chloride

(C) Citric Acid
(D) None of these

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What happens when two opposite poles of magnets are brought close to each other...?

(A) They repel
(B) They attract

(C) They make an electric current flow
(D) None

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_______________ causes biomagnification problem in the Ecosystem....?

(A) Lead
(B) Mercury

(C) Chromium
(D) Copper

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Who said that light is made of corpuscles/particles...?

(A) Maxwell
(B) Einstein

(C) Newton
(D) Huygein

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Who gave the idea of law of inertia...?

(A) Dalton
(B) Galileo Galilei

(C) Bacon
(D) Einstein

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Which of the following have maximum calorific value...?

(A) Carbohydrates
(B) Fats

(C) Proteins
(D) Vitamins

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The life cycle of a bean plant is...?

(A) Seed→Flowering→Germination→Leaf growth
(B) Seed→Germination→Leaf growth→Flowering

(C) Germination→Leaf growth→Flowering→Seed
(D) Germination→Leaf growth→Seed→Flowering

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