HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Account for the following.

Aniline does not undergo Friedel–Crafts reaction

Why carbohydrates are generally optically active?

Draw the major product formed when 1-ethoxyprop-1-ene is heated with one equivalent of HI. 

Account for the following.

Aniline does not undergo Friedel – Crafts reaction.

Why carbohydrates are generally optically active.

Draw the major product formed when 1-ethoxyprop-1-ene is heated with one equivalent of HI

Account for the following.

Aniline does not undergo Friedel – Crafts reaction.

Why carbohydrates are generally optically active.

What will be the product (X and A)for the following reaction

\[\ce{acetylchloride ->[i) CH3MgBr][ii) H3O^+]X ->[acid K2Cr2O7]A}\]

Predict the major product, when 2-methyl but-2-ene is converted into an alcohol of the following method:

Acid catalysed hydration

Write the electronic configuration of Ce⁴⁺ and Co²⁺.

Which is more stable? Fe³⁺ or Fe²⁺ – explain.

Why europium (II) is more stable than Cerium (II)?

Which is the stronger reducing agent Cr²⁺ or Fe²⁺?

Write the postulates of Werner’s theory.

What is an elementary reaction?

Give the differences between order and molecularity of a reaction.

Explain the rate determining step with an example.

State Kohlrausch law. How is it useful to determine the molar conductivity of weak electrolytes at infinite dilution?

Which one of the following is an example for homogeneous catalysis?