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(a) An organic compound X of molecular f...

(a) An organic compound X of molecular formula `C_(2)H_(4)O_(2)` gives brisk effervescence with sodium hydrogencartbonate. Give the name and formula of X.
(b) A mixture of ethyne (acetylene) and oxygen is burnt for welding . Can you tell why a mixtrue of ethyne and air is not used
(c ) Name a chemical rection which is characteristic of unsatureated hydrocarbons (like alkneses and alkynes).

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The correct Answer is:
(a) Ethanoic acid ,`CH_(3)COOH`
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LAKHMIR SINGH & MANJIT KAUR-CARBON AND ITS COMPOUNDS-Exercise
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  2. (a) What happens when ethanoic acid reacts with sodium hydroxide ? Wri...

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  3. (a) An organic compound X of molecular formula C(2)H(4)O(2) gives bris...

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  4. (a) What is menat by an addition rection? Give an example (with equati...

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  5. (a) When ethanoic acid reacts with sodium hydrogencarbonate then a sal...

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  6. (a) Esters are sweet smelling substances and are used in making perfu...

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  7. (a) Name the reaction which is usually sued in the conversion of veget...

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  8. (a) What is a soap ? Name one soap. (b) Describe the structure of a ...

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  9. While cooking, if the bottom of the vessel is getting blackened on the...

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  10. When ethanol is heated with alkaline potassium permanganate solution i...

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  11. When ethanol is heated with concentrated sulphuric acid at 170^(@)C it...

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  12. Oils on treating with hydrogen in the presence of palladium or nickel ...

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  13. The soap molecule has a

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  14. Chlorine reacts with saturated hydrocarbons at room temperature in the

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  15. In a soap micelle, the soap molecules are arranged radially with :

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  16. Ethanol reacts with sodium and forms two products. These are

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  17. Vinegar is a solution of about

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  18. One of the following substances is not added to make denatured alchol....

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  19. One of the following organic compounds cannot decolorize the red brown...

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  20. Compounds that give a brisk effervescence with sodium hydrogen carbona...

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