12th Class Chemistry Quiz Ranking Competition

12th Class Chemistry Quiz Ranking Competition Announcing the International 12th Class Monthly Chemistry Quiz Ranking Competition of 2025!

The national 12th Class Chemistry Quiz Ranking Competition of 2025 invites all 12th students with a passion for chemistry to put their knowledge to the test. No registration fees required, just pure scientific enthusiasm!

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Time: 30 Minutes for 20 Question.

Class 12th Chemistry Quiz Contest [April 2025]

The number of attempts remaining is 1

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1. Which one of the following halogen compounds is difficult to be hydrolysed by SN1 mechanism?

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2. The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with

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3. Benzene hexachloride is

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4. Which among MeX, RCH2X, R2CHX and R3CX is most reactive towards SN2 reaction?

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5. Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statements is not true:

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6. Which of the following forces explain the boiling point of aldehydes and ketones?

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7. Which of the following possesses highest melting point?

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8. Mg reacts with RBr best in

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9. A Grignard reagent may be made by reacting magnesium with

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10. An organic molecule necessarily shows optical activity if it

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11. Sodium salt of benzene sulphonic acid on fusion with caustic soda gives

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12. Which is highly soluble in water?

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13. IUPAC name of ethyl isopropyl ketone is

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14. Which of the following is liquid at room temperature (b.p. is shown against it)?

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15. Aldehydes can be oxidised by :

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16. Which of the following is an optically active compound?

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17. C – X bond is strongest in

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18. SN2 mechanism proceeds through intervention of

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19. Bithional is an example of

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20. Bithional is added to soap as an additive to function as a/an

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Chemistry Quiz Competition Details for 2025:

  • Registration: No Registration required. Only attempt Participate without any charges! Embrace this chance to pit your chemistry skills against international competitors.
  • Competition Time: 24 x 7 but once every month
  • Results Announcement: 2nd day of next month
 

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Swati Kumari

I am an experienced chemistry teacher and content developer specializing in chemistry and science subjects at QuizRanker. With a Master’s degree in Chemistry from Delhi University, I bring a deep understanding of the subject and a passion for teaching. In addition to creating engaging educational content, I offer personalized one-on-one live tutoring sessions for students. I am available to support learners in 11th and 12th grade chemistry, as well as science subjects for students up to 10th grade.