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

Latest MCQs

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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Bio gas is the common name of...?

(A) Methane (CH₄)
(B) Hydrogen gas

(C) Nitrogen gas
(D) Oxygen gas

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Abdul Qadeer Khan died on ______...?

(A) 09 October 2021
(B) 10 October 2021

(C) 11 October 2021
(D) 13 October 2021

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Which is the first element in the periodic table...?

(A) Hydrogen
(B) Helium

(C) Nitrogen
(D) Carbon

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Brass gets discolored in air because of the presence of which of the following gases in air:...?

(A) Carbon dioxide
(B) Hydrogen sulfide

(C) Nitrogen
(D) Oxygen

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اوزون لیئر کو سب سے ذیادہ نقصان کون سا مادہ کرتا ہے۔۔۔؟

(A) سلفر
(B) زنگ

(C) ہائیڈروجن
(D) کاربن

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Which is the heaviest metal:...?

(A) Iron
(B) Mercury

(C) Nickel
(D) Platinum

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Which Muslim scientist is considered to be the founder of chemistry___...?

(A) Jabir bin Hayan
(B) Al Beroni

(C) Yaqoob Alkandi
(D) None

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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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Which is the oldest freezing method:...?

(A) Contact freezing
(B) Flash freezing

(C) Brine freezing
(D) None of these

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