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How many σ and π bonds are present in ea...

How many σ and π bonds are present in each of the following molecules?
(a) `HCequiv"CC"H=CHCH_(3)` (b) `CH_(2)=C=CHCH_(3)`

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Write the complete structural formulae and count the number of carbon-carbon, carbon-hydrogen sigma-bonds and carbon-carbon pi-bonds :
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PRADEEP-ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES TECHNIQUES-Competition Focus (Jee (Main and Advanced)/Medical Entrance) VIII. Assertion-Reason Type Questions
  1. How many σ and π bonds are present in each of the following molecules?...

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  2. Statement-1 . The IUPAC name of the compound {:(CH(2)=CH-CH=CH-CH-C-...

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  3. Assertion: CH(3)CHO and CH(2)=CHOH are resonance structures. Reason:...

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  4. Statement-1. Simple carbanions are usually pyramidal but allyl carbani...

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  5. Assertion: tert-Butyl carbanion is less stable than methyl carbanion. ...

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  6. Assertion: Free redicals are always planer. Reason: They can achieve...

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  7. Assertion: Nitrenes cannot be isolated. Reason: Nitrene are the nitr...

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  8. Statement-1. Beilstein test can be used to detect fluorine in the orga...

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  9. Statement-1. Lassaigne's extract is boiled with dil. HNO(3) before tes...

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  10. Assertion : Butane and 2-methyl butane are chain isomers. Reason : B...

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  11. Assertion :But-1-ene2-Methylprop-1-ene are position isomers. Reason Po...

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  12. Assertion : All the carbon atoms of but-2-ene lie in one plane. Reas...

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  13. Assertion : In CH(2)=C=CH(2), all the carbon atoms are sp^(2)-hybridiz...

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  14. Assertion : A free radical is paramagnetic species. Reason : A free ...

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  15. (A) Tertiary carbocations are generally formed more easily than primar...

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  16. Assertion: Alkyl carbonaions like ammonia have pyramidal shape. Reas...

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  17. (A) Tertiary butyl carbonion is less stable than methyl carbanion. (...

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  18. (A) Allyl free radical is more stable than simple alkyl free radical. ...

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  19. Assertion (A) o-and p-nitrophenol can be separated by steam distillati...

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  20. Assertion : Essential oils are purified by steam distillation. Reaso...

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  21. (A) Oils are purified by steam distillation. (R) The compounds which...

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