XII Chemistry Hydrocarbons Online Test Mdcat-2024

MDCAT Chemistry XII Hydrocarbons
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Instructions for XII Chemistry Hydrocarbons Online Test Mdcat-2024:

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XII Chemistry Hydrocarbons Online Test Mdcat-2024

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1 / 50

1. This Reaction takes place under  ________ and high temperature and pressure

benzene + cl2 forms chlorobenzene

2 / 50

2. This Reaction occurs at ____ temperature, _____ pressure, and in the presence of____.  benzene to cyclohexane

3 / 50

3. Tick the correct statement about benznene:

 

i) Colorful liquid with a molecular mass of 78 g/mol.

ii) Melting point: 5.5°C.

iii) Boiling point: 80 K.

iv) Density: 0.88 g/m³.

4 / 50

4. A racemic mixture is formed by:

5 / 50

5. Which molecule is NOT capable of exhibiting optical isomerism?

6 / 50

6. Which of the following statements is true about optical isomers?

7 / 50

7. Which of the following statements is/are true?

  1. Functional group isomerism: This occurs when molecules have different molecular formulas and functional groups.
  2. Chain isomerism: This occurs when molecules have the same molecular formula and the same arrangements of carbon atoms in the chain.
  3. Positional isomerism: This occurs when molecules have the same molecular formula but the functional group is attached to different carbon atoms within the chain.
  4. Stereoisomerism: This occurs when molecules have the same molecular formula and connectivity but differ in the spatial arrangement of atoms.

8 / 50

8. Tick the Correct Statement :

9 / 50

9. Which one of the following is a derivative of benzene is a deactivated derivative of benzene?

10 / 50

10. Which one of the following pairs doesn't show function group isomers?

11 / 50

11. What is the angle of benzene?

12 / 50

12. Incorrect about para directors :

13 / 50

13. Which one of the following is used for oxidation of benzene?

14 / 50

14. which of the following is the derivative of benzene which is more reactive?

15 / 50

15. What is the boiling point of benzene?

16 / 50

16. Possible isomers of pentane:

17 / 50

17. The bond length of carbon-carbon single and double bonds in benzene is :

18 / 50

18. SO3 has:

19 / 50

19. Benzene is less reactive and highly stable due to

20 / 50

20. In sulphonation of benzene electrophile is

21 / 50

21. In which reaction of benzene aromatic ketone is formed?

22 / 50

22. In which reaction, benzene loses its aromaticity?

23 / 50

23. Acylation of toluene gives:

24 / 50

24. In which process of  free radicals substitution reaction, two free radicals are farmed

25 / 50

25. What is incorrect about ethyne?

26 / 50

26. Which one of the following is correct about Alkynes?

27 / 50

27. -COOR and -CHO are :

28 / 50

28. The isomerism exhibited by n-propyl alcohol and isopropyl alcohol is

29 / 50

29. How many structural isomers does the formula C5H11OH have?

30 / 50

30. Identify the chiral molecule among the following

31 / 50

31. The molecular formula C5H12 contains how many isomeric alkanes

32 / 50

32. Which of the following does not exhibit geometric isomerism?

33 / 50

33. Alkanes undergo halogenation it is an example of

34 / 50

34. Which of the following is not a process of halogenation of alkanes

35 / 50

35.


what is the total number of chain isomers possible for n-hexane?

36 / 50

36. An alkane with 6 carbon atoms will have how many hydrogen atoms?

37 / 50

37. Alkyne show _________ reactions:.

38 / 50

38. In the ozonolysis reaction, acetylene forms

39 / 50

39. Acetylene is oxidized by KMnO4 to form

40 / 50

40. To prepare alkenes from alkyl halide the process used is :

41 / 50

41. The most reactive halogen in the halogenation of alkanes under sunlight is

42 / 50

42. The reaction of hydrogen bromide with ethylene is an example of :

43 / 50

43. Which of the following statements is true about electrophiles?

44 / 50

44. Correct about Benzene:

i) Colorless

ii) Carcinogenic

iii) It Produces white flames on burning due to the absence of a Carbon atom in it

45 / 50

45. Hydrogenation 0f ethe can be carried out in the presence o

46 / 50

46. What is formed when ethene undergoes hydrohalogenation with a halogen acid (HX)?

47 / 50

47. Which rule governs the addition of halogen acid on an unsymmetrical alkene during hydrohalogenation?

48 / 50

48. Arenes do not undergo ___________.

49 / 50

49. Identify the incorrect statement related to aromatic hydrocarbons:

50 / 50

50. Which gas is the main constituent of natural gas?

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