The process of vaporizing a solid substance and condensing the vapours to form the solid directly is known as...? Mcqs

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The process of vaporizing a solid substance and condensing the vapours to form the solid directly is known as...?

(A) Distillation
(B) Sublimation

(C) Filtration
(D) Crystallization

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The uniform or constant fact of nature, virtually an irrefutable theory is _____...?

(A) Scientific theory
(B) Scientific hypothesis

(C) Scientific reasoning
(D) Scientific law

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Montreal Protocol 1987 was__________...?

(A) Treaty among nations to reduce nuclear arsenals
(B) Climate control treaty

(C) Treaty to protect ozone layer
(D) Trade policy about tarrifs

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The maximum mass of an atom is concentrated in _____...?

(A) Electron
(B) Proton

(C) Neutron
(D) Nucleus

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The absolute value of charge on electron was determined by ________ ...?

(A) J.J.Thomson
(B) Chadwick

(C) Rutherford
(D) Robert Millikan

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Maxilla bones are found in___________...?

(A) Jaw
(B) Toe

(C) Ear
(D) Stomach

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A solution which can dissolve more solute at given temperature is called...?

(A) Standard Solution
(B) Super Saturated solution

(C) Unsaturated Solution
(D) Saturated Solution

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The chemical material of a chromosome is called _____...?

(A) Chromatin
(B) Chromeres

(C) Chromonema
(D) Chromatid

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Soil acidity is corrected by...?

(A) Proper irrigation
(B) Adding sodium hydroxide

(C) Liming
(D) Application of fertilizers

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Solution is a mixture of ______...?

(A) Mixture and Compound
(B) Element and Mixture

(C) Solvent and Compound
(D) Solute and Solvent

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