Which of the following statements is/are...

Which of the following statements is/are correct?

A

The van der Waals constant `a` is a measure of attractive force.

B

The van der Waals constant `b` is also called co- volume or excluded volume.

C

`b` is expressed in `L mol^(-1)`.

D

`b` is one-third of ciritical volume.

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Knowledge Check

Which of the following statement is//are correct?

A

All ferroelectric solids are piezoelectric.

B

All piezoelectric solids are ferroelectric.

C

Lead zirconate `(PbZ_(r)O_(3))` is a an antiferroelectric is an antiferroelectric crystal.

D

`BaTiO_(3)`, (barium titanate) is a ferroelectric crystal.

Which of the following statement is/are correct ?

A

Dipole moment of :

B

Dipole moment of : `CH_3F gt CH_3 C1 gt CH_3 Br gt CH_3 I`

C

Dipole moment of : `NH_3 gt NF_3`

D

Dipole moment of : `CH_3 C1 gt CH_2 C1_2 gt CHC1_3 gt C C1_4`

Which of the following statement is/are correct ?

A

`pK_(a1)` of meleic acid is less than `pK_(a1)` of fumaric acid.

B

`pK_(a2)` of maleic acid is greater than `pK_(a2)` of fumaric acid.

C

Phthalic acid is a stronger acid than isophthalic acid.

D

Isopthalic acid is a stronger acid than terephthalic acid.

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