Among the following, one does not belong to calcination, Pick the odd one out.

(a)

\({ PBCO }_{ 3 }\overset { \Delta }{ \longrightarrow } PBO+{ CO }_{ 2 }\uparrow \)

(b)

\({ CaCo }_{ 3 }\overset { \Delta }{ \longrightarrow } Cao+{ CO }_{ 2 }\uparrow \)

(c)

\(PbS{ O }_{ 3 }\overset { \Delta }{ \rightarrow } PbO+{ 2SO }_{ 2 }\uparrow \)

(d)

\({ ZnCO }_{ 3 }\overset { \Delta }{ \rightarrow } ZnO+{ CO }_{ 2 }\uparrow \)

S-S bond is present in _______.

(a)

H₂S₂O₇

(b)

H₂SO₅

(c)

H₂S₂O₆

(d)

H₂S₂O₆

Which of the following is coloured due to charge transfer?

(a)

MnO₄^-

(b)

CrO₄^2-

(c)

Cu₂O

(d)

All of these

The spin only magnetic moment of [Mnfsr₄]^2- is 5.9 BM. Geometry of the complex ion is _______.

(a)

Tetrahedral

(b)

Octahedral

(c)

Square planar

(d)

Pentagonal pyramidal

Which of the following is characteristic of ionic solids?

(a)

Very low value of electrical conductivity in the molten state

(b)

Brittle nature

(c)

Very strong forces of attractions

(d)

Anisotropic nature

In pseudo-order reactions ______.

(a)

The actual order of reaction is different from that expected using rate law expression

(b)

The concentration of at least one reactant is taken in large excess.

(c)

The concentration of reactant taken in excess may be taken as constant

(d)

All of these

K_w represents _______.

(a)

ionic product constant of water

(b)

Solubility product of water

(c)

Equilibrium constant of water

(d)

Buffer index

What happens during the electrolysis of molten sodium chloride?

(a)

Cl₂ is released at the cathode

(b)

Liquid sodium is obtained at the anode

(c)

The emf of the overall reaction is -4.07 V

(d)

Cl₂ is released at the cathode and Liquid sodium is obtained at the anode

Which among the following reactions is an example of auto catalysis?
i) CH₃COOC₂H₅+H₂O➝ CH₃COOH+C₂H₅OH
ii) 2H₂O➝2H₂O+O₂
iii) 2SO₂+O₂➝2SO₃
iv) 2AsH₃➝2As+3H₂

(a)

only (i)

(b)

(i) and (ii)

(c)

(i) and (ii)

(d)

(i) and (iv)

Which one of the alcohol cannot be prepared by grignard reagent?

(a)

Methanol

(b)

ethanol

(c)

iso propyl alcohol

(d)

phenyl methanol