The Class 12 Biology practical examination plays a crucial role in the board results, and the viva voce (oral exam) often ...

1. Choose the correct alternative from the clues given at the end of each statement: (a) The size of the atom in Thomson’s model is ..... the atomic size in Rutherford’s model. (much greater than/no ...

4. What are ambident nucleophiles? Explain with an example. 5. Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify ...