Diamond is a very expensive ornament. It is composed of a single element ___________...? Mcqs

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Diamond is a very expensive ornament. It is composed of a single element ___________...?

(A) Carbon
(B) Gold

(C) Silver
(D) Platinum

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An egg sinks in soft water but floats in a concentrated solution of salt because...?

(A) egg absorbs salt from the solution and expands
(B) albumin dissolves in salt solution and egg becomes lighter

(C) the density of salt solution exceeds the density of eggs
(D) water has high surface tension

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Which of the following surfaces gives diffused reflection...?

(A) Polished metal surface
(B) Calm surface of a lake

(C) Mirror
(D) Roadway

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The coldest region of the Earth’s atmosphere is__________...?

(A) Exosphere
(B) Thermosphere

(C) Stratopause
(D) Mesopause

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Classification of Animals and Plants on the basis on chromosome number is called________...?

(A) Ecology
(B) Taxonomy

(C) Botany
(D) None of these

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______ is a component that conducts current in one direction only....?

(A) Farad
(B) Insulator

(C) Transistor
(D) Diode

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A summary value calculated from population is called...?

(A) Parameter
(B) Sample

(C) Statistic
(D) Population

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Which is the largest gland in the human body...?

(A) Thyroid
(B) Liver

(C) Pancreas
(D) None of these

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Which of the following in the human body is affected by leukemia...?

(A) Blood
(B) Lungs

(C) Eyes
(D) Nerves

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The association between two different types of organism which get benefit to each other, cannot live without each other is called...?

(A) Parasitism
(B) Commensalism

(C) Mutualism
(D) Predation

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