The time taken by Sun to revolve around the center of our galaxy is___________...? Mcqs

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The time taken by Sun to revolve around the center of our galaxy is___________...?

(A) 150 million years
(B) 250 million years

(C) 300 millon years
(D) 350 millon years

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Enzymes are ______...?

(A) Steroid in nature
(B) Protein in nature

(C) Lipid in nature
(D) Carbohydrate in nature

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A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______...?

(A) Stays the same
(B) Decreases by 2

(C) Increases by 1
(D) Decreases by 4

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Curie is a unit of measuring the intensity of ___________...?

(A) Radioactivity
(B) Quantity of Heat

(C) Work or Energy
(D) Power

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Scurvy is caused due to the deficiency of ___________...?

(A) Vitamin A
(B) Vitamin D

(C) Vitamin C
(D) None of these

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Speed of sound in water at 20 °C is___________...?

(A) 1450 m/s
(B) 1474 m/s

(C) 1498 m/s
(D) 1500+ m/s

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Secondary wall is made up of ______...?

(A) Pectin and cellulose
(B) Cellulose and protein

(C) Cellulose and lignin
(D) Lignin and pectin

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A convex mirror always ___________ ...?

(A) Forms a real image
(B) Forms a virtual image

(C) Forms an inverted image
(D) Produces a larger image

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Tendency of atoms to acquire eight electrons in their valence shell is ______...?

(A) Octet rule
(B) Duplet rule

(C) Triplet rule
(D) None of above

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Rectified spirit contains alcohol about ...?

(A) 80%
(B) 95%

(C) 70%
(D) 85%

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