In which layer of atmosphere does commercial aircrafts usually fly...? Mcqs

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In which layer of atmosphere does commercial aircrafts usually fly...?

(A) Stratosphere
(B) Troposphere

(C) Mesosphere
(D) Thermosphere

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Units of electricity consumed by 2500 watt air-conditioner in one hour are_________...?

(A) 25 units
(B) 2.25 units

(C) 2.5 units
(D) 0.25 units

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What do you understand by disease “Insomnia”...?

(A) Color blindness
(B) Depression

(C) Hypertension
(D) Inability to sleep

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With the increase in temperature, heat will be...?

(A) Increase
(B) Decrease

(C) Remain constant
(D) None

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Which instrument is used for viewing the sun...?

(A) Stroboscope
(B) Heliograph

(C) Solograph
(D) None of these

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The process of separation of an insoluble solid from a liquid by passing it through filter paper is called...?

(A) Filtration
(B) Decantation

(C) Sedimentation
(D) Centrifugation

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Which of the statements to about the Troposphere is not true...?

(A) It contains 85-90% of the atmosphere’s mass
(B) It contains nearly all the water and oxygen of the atmosphere

(C) It is the zone which exhibits changes in condition of weather
(D) It is about 350 km thick

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Which of the following is the formula of glucose...?

(A) C6H12O6
(B) C6H6

(C) C6H2O6
(D) None

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Which of the following is the largest planet...?

(A) Neptune
(B) Jupiter

(C) Saturn
(D) Mars

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What are rows in Periodic table called...?

(A) Period
(B) Group

(C) Verticals
(D) Perpendiculars

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