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Published in: Chemistry
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Question Papers of Class 9 and 10 Chemistry

Suranjana M / Aurangabad

19 years of teaching experience

Qualification: M.Tech (IIT,Kharagpur - 2000)

Teaches: Science, Chemistry

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  1. Class X, ICSE Organic Chemistry Max Marks: 50 Time: 2 hours All questions are compulsory (i) Which compound should be heated with soda lime to obtain ethane gas in the laboratory? 1. (ii) Write the equation for the reaction in 1. (i) above. (iii) Write a balanced equation for the complete combustion of ethane. (iv) Name a solid which can be used instead of concentrated sulphuric acid to prepare ethylene by the dehydration of ethanol. (v) Name a reagent which can be used to distinguish between ethane and ethene. (vi) Ethylene forms an addition product with chlorine. Name this addition product and write its structural formula. 2. Name the organic compound prepared by each of the following reactions: (ii) (iii) (iv) (v) 3. 4. (i) (iii) (iv) (v) CH3COONa + NaOH CaC2 + H20 C2H5Br + KOH (a/c) C2H5Br + KOH (aq) C2H50H + CH3COOH Name the following: (ii) (iii) (iv) (v) Second member of alkene series First member of alkane series Third member of aldehyde series. Second member of carboxylic acid. Fourth member of alcohol series. Write IUPAC names of the following [6] [5] [5] [5] o 1--13C C2Hi o C CHs C2Hs o Ch-13 H3Cā€” C ā€” CH3
  2. 5. Draw different isomers having the following molecular formula: (i) C5H12 (chain) (ii) C4H8 (position). (b) What is denatured alcohol? (c) Give two important uses of ethanol. (d) Write equations for: (i) Preparation of ethanol by hydration of C2H4. (ii) Preparation of acetic acid from ethanol. 6. Give the electron dot structure of the following: (i) CH30H (ii) CH4 (iii) C2H6 (iv) CH3COOH 7. a) What is catenation? b) What are homocyclic and heterocyclic compounds? Give examples. c) What is a homologous series?, Give Examples d) What is organic Chemistry? e) What do you know about Organic Compounds? 8.. Define structural isomerism. Give structural isomers of butane. 9. State Four differences between organic and inorganic compounds [5] [2] [2] [4] [5] [2] [4] 10. Give balanced equations for the laboratory preparations of the following organic compounds: [4] i. A saturated hydrocarbon from iodomethane. ii. An unsaturated hydrocarbon from an alcohol. iii. An unsaturated hydrocarbon from calcium carbide. iv. An alcohol from ethyl bromide.

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