It is not advisable to sleep under a tree at night because of the release of:...? Mcqs

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It is not advisable to sleep under a tree at night because of the release of:...?

(A) more oxygen
(B) less oxygen

(C) Carbon dioxide
(D) Carbon monoxide

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Vaccination was discovered by...?

(A) Galileo
(B) Edward Jenner

(C) Baird
(D) Roentgen

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What was the deadline of Kyoto Protocol for CO₂ limit upto 5,86% from 1990s to:...?

(A) 2020
(B) 2004

(C) 2012
(D) None of these

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Which one of the following acid is used in car’s battery...?

(A) Hydrochloric acid
(B) Hydrofluoric acid

(C) Sulfuric acid
(D) Nitric acid

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What is the most abundant element in the universe...?

(A) Hydrogen
(B) Oxygen

(C) Sodium
(D) Copper

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Which gas is used to make soda water...?

(A) Ammonia
(B) Hydrogen

(C) Nitrogen
(D) Carbon Dioxide

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Hypothermia is caused by exposure to...?

(A) Extreme Cold
(B) Extreme Heat

(C) Excessive radiation
(D) None of these

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Which is the oldest freezing method:...?

(A) Contact freezing
(B) Flash freezing

(C) Brine freezing
(D) None of these

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Which planet revolves in Clockwise rotation around sun and seen from earth?...?

(A) Jupiter
(B) Venus

(C) Mars
(D) None of these

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Low silicon, oxygen and High iron, magnesium are the characteristics ____of magma...?

(A) Mafic and Felsic
(B) Felsic and Rhyoltic

(C) Mafic and Basaltic
(D) None of these

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