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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According to the positions of effort, fulcrum, and load, levers are divided into...?

(A) Two kinds
(B) Three kinds

(C) Four kinds
(D) Five kinds

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The circuit that provides two or more paths for the current is called...?

(A) Series Circuit
(B) Short Circuit

(C) Parallel Circuit
(D) Open Circuit

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The height of the troposphere varies between ____________....?

(A) 7 km at equator and 17 km at poles
(B) 17 km at equator and 7 km at poles

(C) 18 km at equator and 8 km at poles
(D) 8 km at equator and 18 km at poles

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Solid can be converted into liquid by...?

(A) Heating
(B) Cooling

(C) Both A and B
(D) None

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Select one the mismatched...?

(A) Protein → Amino acid
(B) Carbohydrate → Glucose

(C) Fats → Starch
(D) Nucleic acid → Nucleotide

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Atomic mass of an element is equal to ______...?

(A) Mass of protons and neutrons
(B) Mass of protons and electrons

(C) Mass of electrons and neutrons
(D) Mass of protons only

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The splitting of white light into its component colours is called ____...?

(A) Refraction of light
(B) Reflection of light

(C) Dispersion of light
(D) Diffraction of light

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The best conductor of heat among liquid is___________...?

(A) Water
(B) Mercury

(C) Ether
(D) Alcohol

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The altitude on stratosphere is ______...?

(A) 40 to 45 km
(B) 50 to 55 km

(C) 60 to 65 km
(D) 70 to 75 km

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