Chemistry Class 10 Chapter 15 Important MCQs Federal Board Chemistry Important MCQs Class 10 Chapter 15 Environmental Chemistry 2 MCQ’S 1. It has been estimated that the total amount of water present on earth is about ____ cubic kilometers. A.1.33 Billion B.1.33 Million C.1.33 Trillion D. None of them Answer: A (1.33 Billion) 2. Water …
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Chemistry Class 10 Chapter 16 Important MCQs Federal Board Chemical Industries MCQs 1. The naturally occurring metallic compounds are A. Acids B. Bases C. Minerals D. All of these ANSWER. C. Minerals 2. The process of separating a metal from its ore is known as A. Kinetic Energy B. Filteration C. Internal Energy D. Metallurgy …
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Class 9 Chemistry Chapter Structure of Atoms Important mcqs Atoms are so ______ that they can only be visualized by a scanning tunneling microscope. A. large B. charged C.small D.electronic Answer: C Note: A scanning tunneling microscope (STM) is a type of microscope used to capture atomic-level images of surfaces. ************************** 2. In 1911 ____ …
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Class 10 Chemistry Chapter Biochemistry Notes pdf Download for Federal board 2022 Biochemistry important mcqs -> Click here Frequently asked Important Biochemistry questions Also Check out !! 10th Class Chemistry Free Downloadable pdf Notes 11th Class Chemistry Chapterwise Free pdf Notes 12th Class Chemistry Free Downloadable
Chemistry Notes Chapter: Organic Chemistry (Complete solved exercise + Self-assessment exercises) Multiple Choice Questions: Condensed structural formula for butane is CH3-CH2-CH3 CH3-CH2-CH2-CH3 CH3-CH2-CH2-CH2-CH3 CH3-CH3 Solution: Condensed structural formula for butane is CH3-CH2-CH2-CH3. Therefore, the answer is b. ————————————————- CH3-CH2-CH3 is the chemical formula for: Ethane Propane Butane Pentane Solution: In CH3-CH2-CH3 three carbon atoms are …
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What is the Destructive distillation of Coal? When coal is heated in absence of air, its destructive distillation or carbonization occurs. Main Products obtained from Destructive Distillation: Destructive distillation of coal produces the following products. Coal gas: Coal gas is also called town gas. It is a mixture of H2, CO, and CH4. Hydrogen and …
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Do you know !! Berzelius gave vital force theory in 1809 . According to ‘Vital Force Theory’ 1.Organic compounds are prepared only inside the bodies of living organisms by a super natural force called vital force. 2.It is impossible to synthesize organic compounds in laboratory. Rejection of Vital Force theory: In 1828, Friedrich Wohler (a …
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