Which formula helps in the determination of the maximum number of electrons present in an orbit...? Mcqs

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Which formula helps in the determination of the maximum number of electrons present in an orbit...?

(A) 2n^2
(B) 2n

(C) n^2
(D) n/2

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A mixture of sand and naphthalene can be separated by ________ ...?

(A) Chromatography
(B) Fractional distillation

(C) Sublimation
(D) None of these

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Radio labeling and carbon dating also show some uses of radioactive isotopes in determining the ____ of fossils....?

(A) Size
(B) Age

(C) Shape
(D) Color

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Respiratory surface possesses following property...?

(A) Thin and wet
(B) Permeable

(C) Very large
(D) All of these

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Soil acidity is corrected by...?

(A) Proper irrigation
(B) Adding sodium hydroxide

(C) Liming
(D) Application of fertilizers

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Carrot is good source of Vitamin _______...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin C
(D) Vitamin D

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NASA scientists have recently detected water vapor on which Jupiter’s moon...?

(A) Callisto
(B) Europa

(C) lo
(D) None

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The lowest temperature ever recorded on the Earth is...?

(A) –89.2 °C
(B) –86.2 °C

(C) –83.2 °C
(D) –92.2 °C

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Quantitative observation is the use of _____...?

(A) Senses
(B) Equipment

(C) Guess
(D) Ratio

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Ozone layer thickness is measured in____________...?

(A) Metre
(B) Joule

(C) Pounds
(D) Dobson

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