If proton number is 19, electron configuration will be ______...? Mcqs

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If proton number is 19, electron configuration will be ______...?

(A) 2, 8, 9
(B) 2, 8, 8, 1

(C) 2, 8, 1
(D) 2, 8, 3

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Chlorophyll contains _____metal....?

(A) Iron
(B) Calcium

(C) Magnesium
(D) Potassium

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The breakdown of food molecules to release energy is called...?

(A) Photosynthesis
(B) Fermentation

(C) Respiration
(D) Mitosis

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The distance between Earth and Sun is greatest during ____________...?

(A) Apehelion
(B) Astronomical

(C) Lopsided
(D) Astronomi

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Plastic is made of materials including _____...?

(A) Recycled Plastic
(B) Rocks & Sand

(C) Coal, Oil, Natural Gas
(D) None of the these

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How many layers does the earth have...?

(A) 1
(B) 2

(C) 3
(D) 4

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The poisonous gas which is the main byproduct of motor vehicle with irritating smell is...?

(A) Carbon Dioxide
(B) Carbon Monoxide

(C) Nitrogen Oxide
(D) Sulfur Dioxide

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Plants don’t need shelter but they need this...?

(A) Change
(B) Living

(C) Air
(D) Space

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____________ contains 75–80 % of the mass of the atmosphere....?

(A) Stratosphere
(B) Mesosphere

(C) Thermosphere
(D) Troposphere

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Oscillations are damped due to the presence of ______...?

(A) Linear motion
(B) Restoring force

(C) Frictional force
(D) Mechanical force

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