The d-and f-Block Elements — Chemistry STD 12 Science — Question

Name two alloys of copper.

How will you bring about the following conversion?
Toluene to benzyl alcohol.

Which alcohol gives blue colour by victor Meyer's test?

What is electrode potential?

In operation of a galvanic cell, at one of the electrodes oxidation takes place. What is the name of this electrode and what is its polarity?

Which of the statements about solutions of electrolytes is not correct?

1. Conductivity of solution depends upon size of ions.
2. Conductivity depends upon viscosiy of solution.
3. Conductivity does not depend upon solvation of ions present in solution.
4. Conductivity of solution increases with temperature.

Read the given passage and answer the questions number 1 to 5 that follow:
The substitution reaction of alkyl halide mainly occurs by S_N1 or S_N2 mechanism. Whatever mechanism alkyl halides follow for the substitution reaction to occur, the polarity of the carbon halogen bond is responsible for these substitution reactions. The rate of S_N1 reactions are governed by the stability of carbocation whereas for S_N2 reactions steric factor is the deciding factor. If the starting material is a chiral compound, we may end up with an inverted product or racemic mixture depending upon the type of mechanism followed by alkyl halide. Cleavage of ethers with HI is also governed by steric factor and stability of carbocation, which indicates that in organic chemistry, these two major factors help us in deciding the kind of product formed.
Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by S_N1 mechanism.

Write IUPAC name of the following compounds and classify them into primary, secondary and tertiary amines.
C₆H₅NHCH₃

Write the IUPAC name of isobutyl alcohol.