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

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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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Water has high density and minimum volume at__________...?

(A) 0°C
(B) 4°C

(C) 100°C
(D) None of these

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Speed of sound in air is _______km/h...?

(A) 1347
(B) 243

(C) 1235
(D) 1495

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Which mineral builds red blood cells and it is also involved in the building of bones...?

(A) Magnesium
(B) Sodium

(C) Copper
(D) Iodine

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Wavelength symbol “λ” is termed as ____...?

(A) Delta
(B) Gamma

(C) Omega
(D) Lambda

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What are the primary colors of Pigment...?

(A) White, Black, Blue
(B) Red, Yellow, Blue

(C) Red, Orange, Blue
(D) Red, Green, Blue

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_________ contains ozone layer....?

(A) Thermosphere
(B) Exosphere

(C) Lithosphere
(D) Stratosphere

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A process of separating insoluble solids from a mixture is called...?

(A) Crystallization
(B) Filtration

(C) Distillation
(D) Sublimation

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The shielding effect across the period _______...?

(A) Increases
(B) Decrease

(C) Moderate
(D) Same

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Which element is used as moderator in nuclear reactor...?

(A) Light water
(B) Dense water

(C) Fresh water
(D) Heavy water

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