Which of the following mixture of gases is required in gas welding...? Mcqs

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Which of the following mixture of gases is required in gas welding...?

(A) Oxygen and ethylene
(B) Oxygen and hydrogen

(C) Acetylene and oxygen
(D) Acetylene and hydrogen

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The particles in a liquid have the following movement...?

(A) Move randomly with unlimited space
(B) Move randomly with limited space

(C) Vibrate at a fixed position
(D) Vibrate randomly with unlimited Space

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An element that does not occur in nature but can be produced artificially is__________...?

(A) Plutonium
(B) Uranium

(C) Radium
(D) Thorium

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The insects (arthropods) that are now extinct...?

(A) Trilobites
(B) Arachnids

(C) Crustaceans
(D) Myriapods

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The time in which Earth completes its revolution around the Sun is________...?

(A) 365.25 days
(B) 340 days

(C) 325 days
(D) 360 days

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AIDS virus is______________________...?

(A) Single-stranded RNA
(B) Single-stranded DNA

(C) Double-stranded RNA
(D) Double-stranded DNA

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What is Dry Ice...?

(A) Solid Oxygen
(B) Solid Carbon Dioxide

(C) Solid Hydrogen
(D) Solid Nitrogen

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The Temperature of the surface of Sun is_______...?

(A) 5,778 Kelvin
(B) 6,778 Kelvin

(C) 7,778 Kelvin
(D) 9,778 Kelvin

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who invented bulb...?

(A) Philips
(B) Robert

(C) Edison
(D) Willium

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The term ‘Geography’ was coined first time by a Greek scholar _________ in 234BC...?

(A) Herodotus
(B) Thales of Miletus

(C) Eratosthenes
(D) Plato

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