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Convert acetylene into but-2-ene....

Convert acetylene into but-2-ene.

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`HC-=CHoverset(2NaNH_2)underset(NH_3(l))toNaC-=CNaoverset(2CH_3I)toCH_3CH=CHCH_3overset(H_2)underset(Pd-BaSO_4)larrCH_3-C-=C-CH_3`
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CHHAYA PUBLICATION-HYDROCARBONS-(QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (Short answer type)
  1. How can allyl chloride be prepared from 1-propanol ?

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  2. trans-pent -2-ene is polar but trans-but -2-ene is non-polar- why ?

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  3. Convert acetylene into but-2-ene.

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  4. Ozonolysis of an alkene leads to the formation of an aldehyde and an i...

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  5. An alkene having molecular formula, C4H8 reacts with HBr to form a ter...

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

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

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

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

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

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  11. Why does benzene burn with a sooty flame ?

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

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

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

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

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

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

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

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

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

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