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Class 11 Chemistry Practice Test: Organic Chemistry - Qualitative Analysis of Organic Compounds
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Avg score: 90% • Most missed: “What is the color of the precipitate obtained in the test for sulphur?”
Qualitative analysis of organic compounds is done to detect the presence of various elements such as oxygen, nitrogen, sulfur and halogen elements. Some of the most commonly occurring elements in organic compounds are carbon, hydrogen, sulfur, nitrogen and halogen elements. Qualitative analysis vs quantitative analysis: Qualitative analysis  measures changes in melting point, color, odor, radioactivity, reactivity, bubble production, boiling point and precipitation. Quantitative analysis  determines the number of elements or molecules produced during a chemical reaction. Qualitative... Show more
Class 11 Chemistry Practice Test: Organic Chemistry - Qualitative Analysis of Organic Compounds
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10 Questions

1. Potassium can replace sodium in lassaigne’s test.
2. In case of both nitrogen and sulphur existence, Prussian blue is still the color of the end product.
3. What is Lassaigne’s test extract called as?
4. A X color precipitate, which is Y in ammonium hydroxide indicates presence of chlorine. Identify X and Y.
5. Carbon and hydrogen are detected by heating the compound with which of the following?
6. Which is the oxidizing agent used in the test for phosphorous?
7. Which compound gets precipitated in the detection of carbon and hydrogen?
8. Identify the element that cannot be detected by Lassaigne’s test.
9. In the test for nitrogen, the sodium fusion extract is acidified with which of the following?
10. What is the color of the precipitate obtained in the test for sulphur?

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