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

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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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The distance between the optical center and the principal focus is called ____...?

(A) Focal Length
(B) Focal Point

(C) Optical Centre
(D) Centre of Curvature

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How many layers of Atmosphere...?

(A) 2
(B) 3

(C) 4
(D) 5

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The study of the structure of the body is called _______ ...?

(A) Anthropobiology
(B) Anatomy

(C) Aphnology
(D) Apiology

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Development of calf muscles in ladies who wear high heel sandals is common example of ...?

(A) Natural selection
(B) Artificial selection

(C) Use & disuse of organ
(D) Inheritance of acquired character

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What is the unit for the spring constant...?

(A) Nm
(B) Nm^-2

(C) Nm^-1
(D) Nm^2

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The insects (arthropods) that are now extinct...?

(A) Trilobites
(B) Arachnids

(C) Crustaceans
(D) Myriapods

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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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The universe is continuously ____...?

(A) Contracting
(B) Expanding

(C) Static
(D) None of these

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Which of the following is the most stable element...?

(A) Uranium
(B) Hydrogen

(C) Oxygen
(D) Lead

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