Entry Test 2021 Chemistry Alcohols, Phenols And Ethers MCQS Online Preparation Sample Paper Questions with Answer

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Alcohol, Phenol and Ether, Classification Of Alcohol, Classification Of Phenol, Classification Of Ether, What are the uses of ether.

An essential organic compound with a wide range of uses is alcohol, phenols and ethers. Alcohols are classified by their carbon atom’s attachment to the hydroxyl group, which is Primary, Secondary or Tertiary. In the benzene ring, phenols are classified by substituents, which distinguish between monohydroxy and polyhydroxy phenols. Ethers, in turn, are classified by the groups bonded to the oxygen atom, resulting in primary, visit Nokryan.com.

Alcohols. phenols. and ethenols By Nokryan.com

1. Alcohol can be denaturated by adding ?

  • Pyridine
  • Acetone
  • Methanol
  • Allcorrect

2. Phenols are derivative of ?

  • Alkenes
  • Benzenecorrect
  • Alkanes
  • Alkynes

3. Oxidation of ter-alcohol gives ?

  • alkanes
  • Formaldehyde
  • Alkenes
  • Ketonecorrect
  • Aldehyde

4. Which is possible in ethrs ?

  • Oxidation and reduction
  • Towards acidscorrect
  • Reactivity towards bases
  • Reactivity high

5. Absolute alcohol obtained by adding rectified spirit in alcohol ?
A = Water
B = Na2CO3
C = NaOH
D = CaO

  • C
  • Dcorrect
  • A
  • B

6. Use of ethanol as ?

  • In beverage
  • Drink
  • Solvent and fuel
  • All of thesecorrect

7. Alcohols can be distinguished using test ?

  • Kolb’s
  • Lucascorrect
  • William’s
  • Tollen’s

8. General formula of alcohol is ?

  • R-O-R
  • Ph-OH
  • Ar-OH
  • ROHcorrect

9. Rectified spirit contains alcohol about ?

  • 90%
  • 80%
  • 95%correct
  • 85%

10. Phenol was discovered by ?

  • Rungecorrect
  • Henderson
  • Hofmann
  • Bakelite

11. Dow’s method is used to prepare ?

  • Ethanol
  • Methanol
  • Phenolcorrect
  • Ether

12. Methyl alcohol is not used ?

  • As a substitute for petrolcorrect
  • As a solvent
  • For denaturing of ethyl alcohol
  • As an anti-freezing agent

13. Ethanol in Pakistan is prepared from fermentation of ?

  • Starch
  • Sugar
  • Glucose
  • Molassescorrect

14. Alcohols are named by replacing ‘e’ of alkane with ?

  • olcorrect
  • one
  • ene
  • al

15. Phenol is a derivative and has a resemblance in structure to ?

  • Oxides of lithium
  • Watercorrect
  • Oxides of aluminium
  • Oxides of magnesium

16. Which is not property in ether ?

  • High b.p
  • Very weak hydrogen bonding
  • Slightly soluble
  • Inflammablecorrect

17. Which enzyme is not involved in the fermentation of starch ?

  • Zymase
  • Urease
  • Invertase
  • Diastase

18. Alcohols are derivatives of ?

  • Alkanescorrect
  • Alkynes
  • Alkenes
  • Benzene

19. According to Lewis concept ethers behave ?

  • Acid
  • None of them
  • Acid as well as a base
  • Basecorrect

20. Concentration of rectified spirit is ?

  • 95%correct
  • 12%
  • 14%
  • 90%
  • 100%

21. Denaturing of alcohol is done by adding methanol in ethanol ?

  • 40%
  • 20%
  • 10%correct
  • 30%

22. The organic compound, alcohols are much closer to, in structure and hence is also called its derivative ?

  • Oxides of aluminium
  • Watercorrect
  • Oxides of magnesium
  • Oxides of lithium

23. Taster of lower alcohol is ?

  • Saltycorrect
  • Bitter
  • Our
  • Sweet

24. Derivative of water is ?

  • All of thesecorrect
  • Alcohols
  • Phenols
  • Ether

25. Ethanol can be converted into ethanoic acid by ?

  • Hydrogenation
  • Hydration
  • Fermentation
  • Oxidationcorrect

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