Pick out the alloy that contains a non-metal as a constituent in it ________.

(a)

Brass

(b)

Bronze

(c)

Steel

(d)

Invar

Silicones are ______.

(a)

ortho silicates

(b)

water repellent thermal insulators

(c)

both (a) and (b)

(d)

None of these

CrO₃ is coloured due to_______.

(a)

Low l.E

(b)

Crystal defects

(c)

Charge transfer spectra

(d)

Unpaired electrons

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⁺

During decomposition of an activated complex.

(a)

energy is always released

(b)

energy is always absorbed

(c)

energy does not change

(d)

products may be formed.

Buffer index is _______.

(a)

\(\beta =\frac { dB }{ p{ K }_{ a } } \)

(b)

\(\beta =\frac { dB }{ d(pH) } \)

(c)

\(\beta =\frac { dB }{ pH } \)

(d)

\(\beta =\frac { dB }{ pOH } \)

The function of FeCl₃ in the conversion of Fe(OH)₃ precipitate into a colloid is_________.

(a)

peptising agent

(b)

emulsifying agent

(c)

reducing agent

(d)

precipitating agent

Which is optically active?

(a)

n-butyl alcohol

(b)

isobutyl alcohol

(c)

2-butanol

(d)

t-butyl alcohol

The common name for 4-hydroxy toluene is ________.

(a)

p-cresol

(b)

m-cresol

(c)

resoricinol

(d)

catechol

Which among the following statement is incorrect regarding urotropine?

(a)

It is an urinary antiseptic

(b)

It is hexa methylene diamine

(c)

Used in the preparation of an explosive

(d)

All the above