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How can butan -2-one be prepared from ac...

How can butan -2-one be prepared from acetylene ?

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CHHAYA PUBLICATION-HYDROCARBONS-(QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (Short answer type)
  1. An alkene having molecular formula, C4H8 reacts with HBr to form a ter...

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  2. Carry out the following transformation (in two steps): Methyl acetylen...

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  3. How can butan -2-one be prepared from acetylene ?

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  4. Write the IUPAC names of the products obtained when buta-1,3-diene rea...

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  5. Distinguish between buta-1,3-diene and but-1-yne ?

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  6. Prove that benzene is insoluble in water and is lighter than water.

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  7. Why does benzene burn with a sooty flame ?

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  8. Explain why it is very difficult to introduce the third -NO2 group in...

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  9. Nitration of aniline with 98% H2SO4 and conc. HNO3 occurs very slow...

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  10. Explain why nitrobenzene (C6H5-NO2) is used as a solvent in the Friede...

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  11. Are all the six carbon -carbon bonds of benzene molecule equal in leng...

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  12. Heats of hydrogenation of benzene and cyclohexane are -49.8 and -28.6 ...

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  13. Activating groups are ortho-/para-directing ,while the deactivating gr...

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  14. How will you remove traces of aniline present in benzene ?

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  15. How can traces of phenol present in a sample of benzene be removed ?

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  16. Why groups like -CHO,-NO2,-B(OR)3,-overset(oplus)PBr3 and -overset(opl...

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  17. Arrange the compounds in increasing order of their rate of nitration a...

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  18. How will you distinguish between benzene and hexane by a simple test i...

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  19. Aniline does not undergo Friedel-Crafts reaction, though it contains a...

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  20. A mixture of benzene and bromine solution remains unchanged for indefi...

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