A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called...? Mcqs

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A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called...?

(A) α-emission
(B) β-emission

(C) γ-emission
(D) Nuclear fission

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Fraction is a force which always opposes...?

(A) Gravity
(B) Motion

(C) Electromagnetism
(D) Inertia

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Which are consumers that eat both producers and consumers...?

(A) Omnivores
(B) Herbivores

(C) Carnivores
(D) None

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The Sun is at an average distance of about________ million kilometers away from Earth...?

(A) 100 million
(B) 150 million

(C) 200 million
(D) 250 million

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Ombrophobia is fear of____________...?

(A) Rain
(B) Snow

(C) Smog
(D) None of these

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Which of the following helps in clotting of blood...?

(A) Vitamin B1
(B) Vitamin B2

(C) Vitamin D
(D) Vitamin K

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Quality rating of deisel is called...?

(A) Octane
(B) Cetane

(C) Protane
(D) Butane

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The automatic process of altering focus to get sharper image of near object is ______...?

(A) Vision
(B) Accommodation

(C) Focus
(D) All of these

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In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process...?

(A) Boiling
(B) Condensation

(C) Convection
(D) Evaporation

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Primary cosmic rays are composed largely of very fast__________...?

(A) Protons
(B) Neutrons

(C) Electrons
(D) Gamma rays

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