What happens when two opposite poles of magnets are brought close to each other...? Mcqs

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What happens when two opposite poles of magnets are brought close to each other...?

(A) They repel
(B) They attract

(C) They make an electric current flow
(D) None

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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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Geiger-Muller counter is used to detect__________...?

(A) Protons
(B) Neutrons

(C) Photons
(D) none

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The gases used in different types of welding would include:__________...?

(A) oxygen and hydrogen
(B) oxygen, hydrogen, acetylene and nitrogen

(C) oxygen, acetylene and argon
(D) oxygen and acetylene

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During the process, more water will also evaporate and convert to a gaseous state of water called the...?

(A) Water Liquid
(B) Water Solid

(C) Water Vapour
(D) Water Ice

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Which of the following performs its function by converting electrical energy into motion...?

(A) An electric motor
(B) An electric bulb

(C) An electric iron
(D) None

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The reaction which releases or gives off heat is called...?

(A) Exothermic Reaction
(B) Endothermic Reaction

(C) Oxidation Reaction
(D) Neutralization Reaction

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Which of the following vitamin is known as Cobalamin...?

(A) vitamin B-1
(B) vitamin B-3

(C) vitamin B-9
(D) vitamin B-12

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Final step of the scientific method is developing...?

(A) Hypothesis
(B) Research

(C) Conclusion
(D) Observation

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which is the second brightest star in the Universe...?

(A) Betelgeuse
(B) Vega

(C) Canopus
(D) None of these

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