Mohib Ullah Farooq . 31st Jan, 2023, 3:07 PM
Chemistry #expch001 Important Questions
Ch. 1. Basic Concepts and Isomerism #expch_006
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1. How many acidic hydrogen atoms are there in propyne?
a) 1
b) 3
c) 4
d) zero
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=9s
2. Which of the following has a +M effect?
a) NO2
b) NH2
c) CHO
d) CN
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=59s
3. m-nitrophenol is about 100 times more acidic than phenol due to
a) Steric effect
b) Resonance effect
c) Solvent effect
d) Inductive effect
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=107s
4. Which isomerism is not exhibited in alkene?
a) Geometrical
b) Metamerism
c) Chain isomerism
d) Position isomerism
Hint
Alkenes can show chain isomerism (different longest chain but same formula), position isomerism (substituents at different places) and geometrical isomerism (cis-trans) but not metamerism, because it does not contain any functional group like two alkyl groups on either side (R−O−R′).
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=218s
5. No of conjugated electrons in pyridine?
a) Zero
b) 6
c) 8
d) 5
Video Explanation
https://www.youtube.com/watch?v=v9O309oArE0&t=368s
Are you feeling difficulty in understanding??
Watch the complete Lecture by the same Teacher First
https://www.youtube.com/watch?v=v9O309oArE0
