Exoskeleton of a marine snail is composed of...? Mcqs

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Exoskeleton of a marine snail is composed of...?

(A) Calcium Sulphate
(B) Calcium Carbonate

(C) Sulphur Dioxide
(D) None of these

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The formula of Quartz is:...?

(A) SiO2
(B) Nacl

(C) SiO4
(D) None of these

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Which Muslim Scientist is considered to be the founder of chemistry...?

(A) Ibn Al Nafees
(B) Jabir ibn Hayyan

(C) Abu Nasr Al-Farabi
(D) None of these

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Which metal is found in liquid state at room temperature?...?

(A) Iron
(B) Zinc

(C) Aluminum
(D) Mercury

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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 gas can be ventilated buildings accumulated in poorly...?

(A) Xenon
(B) Hydrogen

(C) Radon
(D) Helium

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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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Biogas produced as a result of anaerobic decay of organic matter consist primarily of_____ gases ...?

(A) N2 & SO2
(B) O2 & N2

(C) NH3 & CO2
(D) None of these

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Galvanized iron sheets have on the coating of...?

(A) Lead
(B) Chromium

(C) Tin
(D) Zinc

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How many Neutrons in Hydrogen:...?

(A) O
(B) 1

(C) 2
(D) None of these

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