A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______...? Mcqs

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A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______...?

(A) Stays the same
(B) Decreases by 2

(C) Increases by 1
(D) Decreases by 4

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Big Bang theory explains_____________...?

(A) Origin of Universe
(B) Origin of Sun

(C) Laws of physics
(D) None of above

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When Earth is between the Moon and the Sun, this forms a shadow of the Earth, and the Moon passes through this shadow of the Earth, causing a ______...?

(A) Solar Eclipse
(B) Lunar Eclipse

(C) Moon Shadow
(D) Earth Shadow

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Which of the following source of energy is caused by uneven heating of earth’s surface...?

(A) Wind
(B) Solar

(C) Biomass
(D) None of these

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The cold war between the organisms of a community occupying the same habitat is called _____...?

(A) Predation
(B) Competition

(C) Mutualism
(D) Commensalism

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The gas used in a refrigerator to cool water is___________...?

(A) Nitrogen
(B) Carbon dioxide

(C) Methane
(D) Tetrafluoroethane

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Which of the following statements is true when we see ‘rainbow’ ...?

(A) We face sun and raindrops
(B) The Sun remains behind us and we face raindrops

(C) In light rainfall, we face Sun
(D) The sky remains clear and the sun is at lower position in the sky

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A process by which solvent passes through a porous membrane called...?

(A) Filtration
(B) Distillation

(C) Osmosis
(D) Sedimentation

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Huge cloud of gass and dust in the universe is called...?

(A) Constellation
(B) Satellite

(C) Meteorite
(D) Nebula

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Food is fermented by...?

(A) Insulin
(B) Bacteria

(C) Virus
(D) None of these

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