What is the name of the gas used in an air conditioner...? Mcqs

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What is the name of the gas used in an air conditioner...?

(A) Ammonia
(B) Nitrous oxide

(C) Freon
(D) CO2

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The automatic process of altering focus to get sharper image of near object is ______...?

(A) Vision
(B) Accommodation

(C) Focus
(D) All of these

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Density of Water is_________...?

(A) 897 kg/m³
(B) 997 kg/m³

(C) 1000 kg/m³
(D) 1025 kg/m³

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The blotting paper helps observe liquid by__________...?

(A) Surface Action
(B) Capillary Action

(C) Viscosity
(D) Boldness

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A Bar is System International unit to measure...?

(A) Temperature
(B) Energy

(C) Pressure
(D) Force

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In Fahrenheit scale the freezing point of water is ______...?

(A) 30°F
(B) 32°F

(C) 34°F
(D) 100°F

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The speed of light is __________...?

(A) 280,000 km/s
(B) 300,000 km/s

(C) 320,000 km/s
(D) none of these

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What is the name of the central part of the earth...?

(A) Mantle
(B) Core

(C) Crust
(D) None of the above

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Which of the following is a transition element...?

(A) Cl
(B) Cu

(C) S
(D) None of these

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On which disease did Robert Koch work...?

(A) Tuberculosis
(B) Cholera

(C) Malaria
(D) Diabetes

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