Mohib Ullah Farooq . 7th Feb, 2023, 3:40 PM
Chemistry #expch001 Important Questions
Ch. 1. Basic Concepts and Isomerism #expch_006
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11. Select the correct statement from the following option.
Conjugate effect is stronger than (-I) effect
Conjugate effect is weaker than (-I) effect
Conjugate effect is same as (-I) effect
None of the mentioned
Hint
The conjugate effect is stronger than (-I) effect. Conjugate effect (or delocalization) is an effect in which molecular orbitals (MOs) are conjugated to new molecular orbitals that are more delocalized and therefore generally lower in energy.
When the substituents like -OH have an unshared pair of electrons, the resonance effect is stronger than the inductive effect which make these substituents stronger activators, since this resonan effect direct the electron toward the ring.
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=768s
12. Those groups which are electron repelling and have lesser electron attracting power than hydrogen show
(+E) effect
(-E) effect
(-I) effect
(+I) effect
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=852s
13. Which of the following show cis trans isomerism?
1-butene
2-butene
Ethene
All of these
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=911s
14. if the position of the functional group varies in each of its isomers then it is
Position isomerism--
Functional group isomerism
Chain isomerism
None of the above
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=970s
15. which one is not an isomer of butanone?
2,3-epoxybutane
ethyl vinyl ether
1,2-butanol
ter-butyl ether
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=988s
Are you feeling difficulty in understanding?
Watch the complete Lecture by the same Teacher First
https://www.youtube.com/watch?v=v9O309oArE0
