Isotopes of an element have the same number of _______...? Mcqs

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Isotopes of an element have the same number of _______...?

(A) Neutrons
(B) Protons

(C) Electrons
(D) Beta rays

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Which is not a cause of land pollution...?

(A) Plastic bags, bottles, glass bottles, tin cans
(B) Vegetables and fruit cutting

(C) Animal wastes
(D) All of these are causes of land pollution

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Animal without red blood cells is_________ ...?

(A) Frog
(B) Earthworm

(C) Snake
(D) Crocodile

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An atom is_____________...?

(A) smallest indivisible particle in an element
(B) smallest particle of an element which can undergo a chemical reaction

(C) building block of an element
(D) always smaller than molecule

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The primary function of the feathers in birds is to _________...?

(A) Provide insulation for preserving body heat
(B) Provide striking surface to the wings for flying

(C) Make the body surface waterproof
(D) impart coloration for species as well as sex recognition

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What percentage of plasma is composed of water...?

(A) 70%
(B) 80%

(C) 90%
(D) 92%

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The properties used for heat...?

(A) Hot, Energy, Cold
(B) Color, Smell, Sound

(C) , Heavy, Light, Hard
(D) Circle, Square, Point

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Which of the Following Hormones Regulate Blood Sodium and Potassium Levels in the Body...?

(A) Aldosterone
(B) Cortisol

(C) Glycogens
(D) Pheromones

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Ionic crystals have ______...?

(A) High melting points
(B) Moderate melting points

(C) Low melting points
(D) None of above

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A magnifying glass forms an enlarged ______...?

(A) Real and upright image
(B) Virtual and upright image

(C) Real and inverted
(D) Virtual and inverted image

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