The length of C - C bond in benzene is : from Chemistry NEET Yea

Subject

Chemistry

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

21.

Action of acetylene on dilute H2SO4 gives :

  • acetic acid

  • acetaldehyde

  • acetone

  • acetoacetic ester


22.

Oxidation state of Fe in Fe3O4 is :

  • 3/2

  • 5/4

  • 4/5

  • 8/3


23.

Which of the following reaction produces hydrogen ?

  • Mg + H2O

  • H2S2O8 + H2O

  • BaO2 + HCl

  • Na2O2 + 2HCl


24.

Which of the following is a chiral compound ?

  • Hexane

  • n-butane

  • Methane

  • 2,3,4-Trimethyl hexane


Advertisement
Advertisement

25.

The length of C - C bond in benzene is :

  • 1.22 Ao

  • 1.54 Ao

  • 1.39 Ao

  • 1.56 Ao


C.

1.39 Ao

The bond length C = C (single bond as in ethane) is 1.54 A and C = C double bond as in ethene is 1.33 Ao . The carbon carbon bond length in benzene has been found to be 1.39Ao which lies between single and double bond length value.


Advertisement
26.

Which of the following is most stable ?

  • 1-butene

  • 1-pentene

  • 2-butene

  • 2-pentene


27.

Assertion: Stannous chloride gives a grey precipitate with mercuric chloride, but stannic chloride does not do so.
Reason: Stannous chloride is a powerful oxidising an agent which oxidises mercuric chloride to metallic mercury.

  • If both assertion and reason are true and the reason is a correct explanation of the assertion.

  • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

  • If the assertion is true but the reason is false.

  • If both the assertion and reason are false.


28.

Assertion: Diamond is a bad conductor.
Reason: Graphite is a good conductor.

  • If both assertion and reason are true and reason is a correct explanation of the assertion.

  • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

  • If the assertion is true but the reason is false.

  • If both the assertion and reason are false.


Advertisement
29.

Which of the following is not an ore of iron ?

  • Limonite

  • Caniterite

  • Magnetite

  • None of these


30.

For the reaction :

H2 + Cl2 Sunlight 2HCl , the order of reaction is :

  • 0

  • 2

  • 1

  • 3


Advertisement