Electrochemistry — Chemistry STD 12 Science — Question

Write the names of reagents and equations for the preparation of the following ethers by Williamson’s synthesis:

1-Propoxypropane.

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

1. Assertion and reason both are correct statements and reason is correct explanation for assertion.
2. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
3. Assertion is correct statement but reason is wrong statement.
4. Assertion and reason both are incorrect statements.
5. Assertion is wrong statement but reason is correct statement.

Assertion: Molarity of a solution in liquid state changes with temperature.
Reason: The volume of a solution changes with change in temperature.

Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d⁵. What is its atomic number?

1. 25
2. 26
3. 27
4. 24

How do enzymes help a substrate to be attacked by the reagent effectively?

Which of the following will have higher molar conductivity between them : (i) One mole NaCl in 100 ml solution (ii) One mole NaCl in 250 ml solution and why?

Write structure of the compound whose IUPAC names are as follow:

2,3 – Diethylphenol.

What is the role of pyridine in the acylation reaction of amines?

Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.

Bring out the following conversion:
Acetic acid to Malonic acid.