Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions for Chemistry

Which of the following species cannot act as a ligand? Give reason.

Assertion (A): EDTA is a hexadentate ligand.

Reason (R): EDTA has 2 nitrogen and 4 oxygen donor atoms.

Which of the following is not correct?

Match the properties with the elements of 3d series:

If the initial concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M, the rate constant for the reaction if it follows zero-order kinetics is ______.

Does ionization isomer for the following compound exist? Justify your answer.

\[\ce{Hg[Co(SCN)4]}\]

Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.

Arrange the increasing order of solubility in water.

\[\ce{C2H5Cl, C2H5NH2, C2H5OH}\]

A 5% solution of \[\ce{Na2SO4.10H2O}\] (MW = 3 22) is isotonic with 2% solution of non- electrolytic, non volatile substance X. Find out the molecular weight of X.

Write the structure of the following compound:

1,4-Dibromobut-2-ene

The depression in freezing point of water observed for the same amount of acetic acid, trichloroacetic acid and trifluoroacetic acid increases in the order given above. Explain briefly.

Give the IUPAC names of the following compound:

\[\ce{(CCl3)3CCl}\]

Write down the electronic configuration of:

\[\ce{CO^2+}\]

What is meant by the chelate effect? Give an example.

Write the structure of the following organic halogen compound.

4-tert. Butyl-3-iodoheptane

Give the IUPAC name of the following compound:

\[\ce{(CCl3)3CCl}\]

How are the following conversions carried out?

Methyl magnesium bromide→2-Methylpropan-2-ol.

What is meant by the chelate effect? Give an example.

Write the structure of the following organic halogen compound.

4-tert-Butyl-3-iodoheptane

What is meant by the chelate effect? Give an example.