Zinc is obtained from ZnO by________.

(a)

Carbon reduction

(b)

Reduction using silver

(c)

Electrochemical process

(d)

Acid leaching

Sodium cyanide solution is used to extract _________from its ores

(a)

copper

(b)

silver

(c)

gold

(d)

both (b) and (c)

The basic structural unit of silicates is _______.

(a)

\(\left( SiO_{ 3 } \right) ^{ 2- }\)

(b)

\(\left( SiO_{ 4 } \right) ^{ 2- }\)

(c)

\(\left( Sio \right) ^{ - }\)

(d)

\(\left( SiO_{ 4 } \right) ^{ 4- }\)

The basicity of pyrophosphorous acid ( H₄P₂O₅) is _______.

(a)

4

(b)

2

(c)

3

(d)

5

XeF₆ on complete hydrolysis produces________.

(a)

XeOF₄

(b)

XeO₂F₂

(c)

XeO₃

(d)

XeO₂

Helium is used in balloons in the place of hydrogen because it is________.

(a)

incombustible

(b)

radioactive and detected easily

(c)

lighter than hydrogen

(d)

both (a) and (c)

Which is a double salt?

(a)

K₂SO₄AI₂(SO₄)₃24H₂O

(b)

NaCI

(c)

K₄[Fe(CN)₆]

(d)

KCl

The number of chloride ions that surrounds the central Na ion in NaCl crystal is_______.

(a)

12

(b)

8

(c)

6

(d)

4

K_w represents _______.

(a)

ionic product constant of water

(b)

Solubility product of water

(c)

Equilibrium constant of water

(d)

Buffer index

The emf generated by an electrochemical cell is given by the symbol ______.

(a)

E

(b)

M

(c)

F

(d)

S

The oxidation of sodium sulphite by air is retarded by _______.

(a)

MnO₂

(b)

H₂S

(c)

Alcohol

(d)

AS₂O₃

Secondary alcohol on oxidation gives ______.

(a)

aldehyde

(b)

ketone

(c)

ester

(d)

anhydride

The common name for 4-hydroxy toluene is ________.

(a)

p-cresol

(b)

m-cresol

(c)

resoricinol

(d)

catechol

Chloretone is an addition product of _______.

(a)

CH₃CHO, HCHP

(b)

CH₃CHO, CHCl₃

(c)

\({ CH }_{ 3 }-\underset { \overset { || }{ O } }{ C } -{ CH }_{ 3 },{ CCl }_{ 4 }\)

(d)

\(\\ { CH }_{ 3 }-\underset { \overset { || }{ O } }{ C } -{ CH }_{ 3 },{ CHCl }_{ 4 }\)

Primary alcohol on oxidation gives _______.

(a)

aldehyde

(b)

ketones

(c)

both (a) and (b)

(d)

neither

The order of reactivity of carboxylic acid derivatives is _______.

(a)

Acid chloride > Ester > Amide > Acid anhydride

(b)

Acid chloride > Acid anhydride > Ester > Amide

(c)

Acid chloride > Amide > Acid anhydride > Ester

(d)

Acid anhydride > Ester > Amide > Acid chloride

The reduction of CH₃ - CH2 - C ☰ N with sodium and alcohol results in the formation of

(a)

\({ CH }_{ 3 }-\underset { \overset { | }{ { NH }_{ 2 } } }{ CH } -{ CH }_{ 3 }\)

(b)

CH₃- CH₂- CH₂- OH + N₂

(c)

CH₃ - CH₂ - CH₂ - NH₂

(d)

CH₃ - CH₂ - NH₂

Which among the following is a tertiary nitro compound?

(a)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ { NO }_{ 2 } } }{ C } } -{ CH }_{ 3 }\)

(b)

\({ CH }_{ 2 }-\overset { \underset { | }{ { NO }_{ 2 } } }{ CH } -{ CH }_{ 3 }\)

(c)

CH₃CH₂CH₂ - NO₂

(d)

\({ CH }_{ 3 }-\underset { \overset { | }{ { CH }_{ 3 } } }{ CH } -{ CH }_{ 2 }{ NO }_{ 2 }\)

Which of the following will not undergo Hoffman's bromamide reaction?

(a)

Ethanamide

(b)

Propanamide

(c)

Methanamide

(d)

Phenyl methanamide

The reagent that cannot be used for the conversion of C₆H₅NO₂ ➝ C₆H₅NH₂

(a)

Sn/HCI

(b)

LiAlH₄

(c)

H₂/Ni

(d)

Zn/NaOH

\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{Br}_{2} / \mathrm{KHO}}{\longrightarrow} \mathrm{CH}_{5} \mathrm{H}_{2} +\mathrm{CO}_{2}\). This is _________ reaction.

(a)

Hoffman bromamide

(b)

HVZ

(c)

Gabriel phthalimide

(d)

Gomberg Bachmann

Oxidation of aniline with acidified K₂Cr₂O₇ gives ___________

(a)

p-benzoquinone

(b)

benzoic acid

(c)

benzaldehyde

(d)

benzyl alcohol

Sucrose is commonly known as_________

(a)

fruit sugar

(b)

table sugar

(c)

grape sugar

(d)

table salt

Ribose is_________

(a)

Ketopentose

(b)

Ketotetrose

(c)

Aldotriose

(d)

Aldopentose

The optically inactive amino acid is_______

(a)

glycine

(b)

alanine

(c)

proline

(d)

phenylalanine