For glavinizing of iron which of the following metals is used ...? Mcqs

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For glavinizing of iron which of the following metals is used ...?

(A) Aluminimum
(B) Copper

(C) Zinc
(D) Lead

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In onion pink color is due_____ ...?

(A) anthocyanin
(B) Carotene

(C) Xanthophylls
(D) None of these

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A communication satellite completes its one revolution around the Earth in ______ hours....?

(A) 6
(B) 12

(C) 18
(D) 24

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There are almost _______of nephrons in the each kidney in human body...?

(A) 5 million
(B) 3 million

(C) 1 million
(D) 10 million

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A loudspeaker changes _________ energy into sound energy....?

(A) Chemical
(B) Electrical

(C) Light
(D) Kinetic

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Objects that gives out light of their own are said to be...?

(A) Luminous
(B) Non-luminous

(C) Reflective
(D) Illuminated

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What is the method that kills harmful microorganisms and prevents the spread of waterborne diseases such as cholera, dysentery, and typhoid...?

(A) Filtration
(B) Sedimentation

(C) Chlorination
(D) Distillation

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Which of the following is used in water purification...?

(A) Reverse Osmosis
(B) Osmosis

(C) Cytolysis
(D) Turgor Pressure

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The most splendid and the most magnificent constellation on the sky is...?

(A) Orion
(B) Columbia

(C) Canis Major
(D) Taurus

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A ______ is an inclined plane wrapped around a cylinder, used to fasten objects....?

(A) Screw
(B) Lever

(C) Pulley
(D) Wheel

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