On heating the particles in the ice cubes will gain energy, move faster and change to liquid water. This is called...? Mcqs

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On heating the particles in the ice cubes will gain energy, move faster and change to liquid water. This is called...?

(A) Freezing
(B) Melting

(C) Boiling
(D) Condensation

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Which of the following is the largest planet...?

(A) Neptune
(B) Jupiter

(C) Saturn
(D) Mars

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A horizontal line that passes through the lens is called ____...?

(A) Focal Point
(B) Optical Centre

(C) Centre of Curvature
(D) Principal Axis

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How many pounds in a kg...?

(A) 2.20
(B) 2.30

(C) 2.40
(D) 2.50

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Which gas is used by the green plants to make their food...?

(A) O2
(B) CO2

(C) CO
(D) N2

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When a star becomes a singularity and has zero volume and infinite density, it is called_______________...?

(A) White dwarf
(B) Blue giant

(C) Wolf-Raynet star
(D) Black hole

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Day and night are the results of__________...?

(A) Earth rotation around its axis
(B) Earth revolution

(C) Earth rotation accompanied with its revolution.
(D) None of these

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Deficiency of vitamin C will cause:__________...?

(A) Beri-Beri
(B) Architis

(C) Scurvy
(D) Night-blindness

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The sunlight can reach a depth of___________meters in the ocean...?

(A) 80
(B) 200

(C) 120
(D) None

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A set of metabolism reaction which maintain internal environment is ______...?

(A) Positive feedback
(B) Negative feedback

(C) Osmoregulation
(D) Homeostasis

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