Identify the halide ore among the following

(a)

Epsom Salt

(b)

Pyrolusite

(c)

Anglesite

(d)

Rock Salt

Oxidation state exhibited by group 13 elements is ______

(a)

+1, +2 and +3

(b)

+1 and +3

(c)

+1 and +4

(d)

+2 +3 and +4

Which among the following ion is not formed?

(a)

F₃^-

(b)

C1₃^-

(c)

Br₃^-

(d)

I₃^-

Which of the following statement is correct for 3d-transition element?

(a)

All metals except Zn and Sc form 'MO' Oxide

(b)

All metals except Sc forms 'MO' Oxide

(c)

All metals except Zn forms 'MO' Oxide

(d)

All metals except Mn forms 'MO' Oxide

Among the following complexes the one which shows zero crystal field stabilisation energy is _______.

(a)

[Mn(H₂O)₆]³⁺

(b)

[Fe(H₂O)₆]³⁺

(c)

[CO(H₂O)₆]²⁺

(d)

[CO(H₂O)₆]³⁺

Which of the following statement is correct?

(a)

On increasing temperature, the coordination number of solid remains unchanged.

(b)

On increasing pressure, the co-ordination number of solid increases.

(c)

On increasing pressure, the co-ordination number of solid decreases.

(d)

On increasing temperature, the coordination number of solid increases

Nitric oxide (NO) reacts with oxygen to produce nitrogen dioxide
2NO_(g) + O_2(g) ⟶ 2NO_2(g)
If the mechanism of reaction is ______.
NO + O₂ \(\overset { K }{ \rightleftharpoons } \) NO₃ (fast)
NO₃ + NO \(\overset { { K }_{ 1 } }{ \rightleftharpoons } \) NO₂ + NO₂ (slow)

(a)

Rate = K' [NO] [O₂]

(b)

Rate = K' [NO] [O₂]₂

(c)

Rate = K' [NO]² [O₂]

(d)

Rate = K' [NO]³ [O₂]

The conjugate base of NH^-₂ is _______.

(a)

NH^-

(b)

NH₃

(c)

NH⁺₃

(d)

NH^2-

When one coulomb of electricity is passed through an electrolytic solution the mass deposited on the electrode is equal to ______.

(a)

equivalent weight

(b)

molecular weight

(c)

electrochemical equivalent

(d)

one gram

The dispersion medium is a liquid and the dispersed phase is a gas. Name the colloid _______.

(a)

sol

(b)

foam

(c)

liquid aerosol

(d)

solid aerosol