Which of the following statements is/are...

Which of the following statements is/are not correct?

Aluminium wire is used in Beilstein test

Nitrogen gas is quantitatively estimated in Dumas method

In Kjeldahl.s method, organic compound is reacted with conc, `H_2SO_4. K_2SO_4` is also added.

All organic compounds contain both C and H

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The correct Answer is:

B, C, D

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Which of the following statement is/are not correct?

I.P. increases down the group

I.P. of s-block element is less than corresponding d-block elements

If `Delta` I.P. `gt` 16 eV, higher oxidation state is more stable

I.P. of halogen elements is maximum in their respective period

Chlorobenzene is more reactive than benzene towards electrophilic substitution reactions

C - Cl bond in chlorobenzene is less polar than in `CH_3Cl`

Chlorobenzene is less reactive than `CH_3C` l towards nucleophilic substitution reactions

In chlorobenzene further substitution take place at ortho and para position

the system of constant entropy and constant volume will attain the equilibrium in a state of minimum energy

the entropy of the universe is on the increase

the process would be spontaneous when `(Delta S_(E,V)) lt 0, (Delta E)_(S, V) gt 0`

The process would be spontaneous when `(Delta S)_(E, V) gt 0, (Delta E)_(S, V)lt 0`