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Which bond is more polar in the followin...

Which bond is more polar in the following pairs of molecules ?
(a) `H_3C-H,H_3C-Br`,
(b) `H_3C-NH_2,H_3C-OH`
( c) `H_3C-OH,H_3C-SH`.

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(a) C–Br, since Br is more electronegative than H, (b) C–O, (c) C–O
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Which bond is more polar in the following pairs of molecules: (a) H_(3)C - H, H_(3)C-Br (b) H_(3)C - NH_(2), H_(3)C - OH (c) H_(3)C - OH, H_(3)C - SH

How many bonds (sigma and pi ) are there in the following molecules? (i) H_(2)C=C=CH_(2) (ii) CH_(3)-C-=CH (iii) H_(2)C=CH-C-=N (iv) CH_(3)NO_(2) (v) CH_(3)OH (iv) C_(2)H_(2)

Indicate the number of sigma -and pi -bonds in the following molecules: (i) CH_(3)-C-=C-H (ii) CH_(3)-CH=CH_(2) (iii) H_(2)C=C=CH_(2) (iv) CH_(3)-CH_(2)-CH_(3) (v) H_(2)C=C-CH-CH_(3) (vi) HC=C-CH=CHCH_(3) (vii) H_(2)C =CH-C-=N (viii) CH_(3)OH (ix) CH_(3)-C-=N (x) CH_(3)NO_(2) (xi) CH_(2)CI_(2) (xii) C_(6)H_(12) (Hexene)

Which of the following has larger bond angle in the following pairs ? (a)NH_(3),PH_(3)(b)BeF_(2),BF_(3)(c )H_(2)O,CO_(2)(d)H_(2)O,H_(2)S(e)C Cl_(4),C_(2)H_(2) ?

How would you carry out the following conversions ? (a) H_(3)C CH_(2)=CH_(2) to H_(3)C- CH_(2)CH_(2)CH_(2)OH (b) H_(3)C CH_(2)-CH =CH_(2) to H_(3)C-CH_(2)-CH(OH)CH_(2)OH (c) H_(3)C C-= CH to H_(3)C COCH_(3) (d) Br_(2)CH CHBr_(2) to HC -=CH

NCERT-ORGANIC CHEMISTRY- SOME BASIC PRINCIPLES AND TECHNIQUES-EXERCISE
  1. Which bond is more polar in the following pairs of molecules ? (a) H...

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  2. Given the hybridistaiton state of each carbon in the following compoun...

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  3. Indicate the sigma- and pi - bonds in the following molecules: I. C(...

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  4. Write the bond line formula for the following compounds: I. Isopropy...

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  5. Give the IUPAC names of the following compounds :

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  6. Which of the following represents the corrcet IUPAC name for the compo...

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  7. Draw the formulae for the first five numbers of each homologous series...

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  8. Give condensed and bond line structural formulas and identify the func...

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  9. Identify the functional groups in the following compounds

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  10. Which of the two: O(2)NCH(2)CH(2)O^(–) or CH(3)CH(2)O^(–) is expecte...

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  11. Explain why alkyl groups act as electron donors when attacted to a pi-...

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  12. Draw the resonance structures for the following compounds. Show the el...

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  13. What are electrophiles and nucleophiles ? Explain with examples.

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  14. Identify the reagents shown in bold in the following equations as nucl...

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  15. Classify the following reactions in one of the reaction type studied i...

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  16. What is the relationship between the members of the following pairs of...

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  17. For the following bond cleavages, use curved-arrow to show the electro...

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  18. Explain the terms Inductive and Electromeric effects. Which electron d...

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  19. Give a brief description of the principles of the following techniques...

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  20. Describe the method, which can be used to separate two compounds with ...

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  21. What is the difference between distillation, distillation under reduce...

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