The formula of Quartz is:...? Mcqs

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The formula of Quartz is:...?

(A) SiO2
(B) Nacl

(C) SiO4
(D) None of these

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Which gas is filled in electric bulb...?

(A) Nitrogen
(B) Oxygen

(C) Carbon dioxide
(D) None of these

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Which of the following has the maximum density...?

(A) Water
(B) Ice

(C) Benzene
(D) Chloroform

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اوزون لیئر کو سب سے ذیادہ نقصان کون سا مادہ کرتا ہے۔۔۔؟

(A) سلفر
(B) زنگ

(C) ہائیڈروجن
(D) کاربن

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Plants exhale at night time which gas...?

(A) O2
(B) H20

(C) Co1
(D) CO2

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CU is the symbol of which element of the periodic table:...?

(A) Chromium
(B) Copper

(C) Carbon
(D) None of these

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Chemical formula of baking soda is ______...?

(A) Na2CO3
(B) K2CIO3

(C) Na2SO4
(D) NaHCO3

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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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How many neutrons in hydrogen:...?

(A) O
(B) 1

(C) 2
(D) 3

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Composition of Alchemy is written by...?

(A) Ibn Al Haithem
(B) Jabir Bin Hayan

(C) Ibn Rushd
(D) Nasir Al Din

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