Which of the following is not a mineral of aluminium?

(a)

Bauxite

(b)

Cryolite

(c)

China clay

(d)

Malachite

Select the incorrect statement regarding B₂H₆.

(a)

It contains B-B ionic bond

(b)

Each boron is Sp³ hybridised

(c)

It has two types of hydrogen bonds

(d)

it is used as a reducing agent

Catenation property of group 15 elements, follow the order _______.

(a)

N < P < As < Sb < Bi

(b)

P >> N > As > Sb > Bi

(c)

P < N < As < Sb < Bi

(d)

N>> P > As > Sb > Bi

Most of the transition metal ions are coloured, because of the ________.

(a)

presence of unpaired electrons

(b)

energy gap between two energy levels is very small

(c)

both (a) and (b)

(d)

neither (a) nor (b)

An aqueous solution of (PdCI)₂ 4NH_3, when treated with excess of AgNO₃ precipitated 2 moles of AgCI. Predict the secondary valency of the compound _______.

(a)

2

(b)

3

(c)

4

(d)

6

In which of the following arrangements, octahedral voids are formed?

(a)

fcc

(b)

bcc

(c)

simple cubic

(d)

hcp

What would be the rate of disappearance of oxygen, if the rate of formation of nitric oxide (NO) is 3.6 x 10^-3mol L^-1 s^-1?

(a)

4 x 10^-3mol L^-1s^-1

(b)

4 x 10^-3mol^-1 L^-1s^-1

(c)

4.5 x 10^-3mol L^-1s^-1

(d)

4.5 x 10^-3mol^-1 L^-1s^-1

Which of the following is not a Lewis acid?

(a)

SiCl₄

(b)

AICl₃

(c)

SO₃

(d)

CO

Pick out the correct statement regarding resistance of an electrolytic solution ________.

(a)

It is inversely proportional to the length (I)

(b)

It is inversely proportional to the cross sectional area (A)

(c)

It is directly proportional to the cross sectional area (A)

(d)

Resistivity is denoted by p (rho)

Oxidation takes place at _________ and reduction takes place at ________.

(a)

anode, cathode

(b)

cathode, anode

(c)

anode

(d)

cathode