Top 20 Questions of Chemistry (Class 12th 1st)

Most Repeated Questions

Top 20 Questions of Chemistry

Previous year question paper with solutions for Top repeated questions of Chemistry

PSEB • Class 12th • 1st

Browse Top 20 questions of Chemistry (Class 12th 1st) previous year question papers for Top repeated questions of Chemistry. This page helps Chemistry students find semester-wise papers for revision, exam practice, and understanding previous exam patterns. These are the top twenty repeated questions identified from previous year papers for Chemistry (Class 12th 1st), helping students focus on the most frequently asked topics.

Top repeated questions

Top 20
  1. 1.

    Complete the following reaction:- \\r\\n\\r\\n

    Appeared 3 times

    Appeared in: Mar 2017

  2. 2.

    Write the following reactions :\\r\\n\\r\\n(i) Williamson' s synthesis\\r\\n\\r\\n(ii) Mendius reaction\\r\\n\\r\\n(iii) Friedel Craft' s Alkylation\\r\\n\\r\\n(iv) Haloform reaction\\r\\n\\r\\n(v) Gutterman reaction

    Appeared 3 times

    Appeared in: Mar 2017

  3. 3.

    Under what conditions the van't Hoff factor is greater than one ?

    Appeared 2 times

    Appeared in: Mar 2017

  4. 4.

    OR\r\n\r\n19. Write the Nernst equation and calculate the emf of following cell at 298K:-\r\nNi/Ni2+ (0.01M) || Cu2+ / Cu (0.01M)\r\nGiven E0 (Cu2+/Cu) = + 0.34V, E0(Ni2+/Ni)= -0.22V\r\n

    Appeared 2 times

    Appeared in: Mar 2017

  5. 5.

    How is benzamide converted into benzylamine ?

    Appeared 2 times

    Appeared in: Mar 2018

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