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

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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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Soap and detergents remove the dirt from clothes due to...?

(A) Capillary action
(B) Osmosis

(C) Diffusion
(D) Lowering of interfacial tension

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The most abundant metal in the earth's crust is:...?

(A) Zinc
(B) Copper

(C) Aluminum
(D) Iron

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What is the chemical formula of washing soda...?

(A) Na2CO3
(B) NaHCO3

(C) Na2CO3
(D) Na2CO3.10H2O

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Cooking gas is also called...?

(A) Butane
(B) Hexane

(C) Propane
(D) LPG

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Which metal is found in liquid state at room temperature?...?

(A) Iron
(B) Zinc

(C) Aluminum
(D) Mercury

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Milk has pH:e:...?

(A) 6.5
(B) 7.5

(C) 8.5
(D) 9.5

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Which gas is known as laughing gas...?

(A) Nitrous oxide N2O
(B) Nitrogen

(C) Methane
(D) None of these

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Which is the first element depicted on the Periodic Table...?

(A) Hydrogen
(B) Aluminum

(C) Oxygen
(D) Gold

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Which planet revolves in Clockwise rotation around sun and seen from earth?...?

(A) Jupiter
(B) Venus

(C) Mars
(D) None of these

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