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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Which of the following branch of Physics deals with the internal structure of earth...?

(A) Biophysics
(B) Geophysics

(C) Plasma physics
(D) Atomic physics

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Name the branch of science which deals with the study of sound and sound waves...?

(A) Aeronautics
(B) Acoustics

(C) Aerostatics
(D) Aetiology

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The lens which coverage a beam of parallel rays of light are called ____...?

(A) Diverging lens
(B) Converging lens

(C) Cylindrical lens
(D) None

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According to many, including the Guinness Book of World Record,________is the world’s rarest mineral...?

(A) Painite
(B) Benitoite

(C) Jadeite
(D) Taaffeite

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How many ounces in a kg...?

(A) 28
(B) 30

(C) 33
(D) 35

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How many time zones are there in the world...?

(A) 22
(B) 12

(C) 16
(D) 24

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How many planets in Solor Syestem...?

(A) 4
(B) 5

(C) 6
(D) 8

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The scientific study of fingerprints is called _________ ...?

(A) Dactylography
(B) Dactylology

(C) Dactyliology
(D) Dialectology

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The relationship of eating and being eaten is called...?

(A) Food Web
(B) Food Chain

(C) Ecosystem
(D) None

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