In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.

Catalyst used in ammonia synthesis uses __________ as a promoter.

A

Pt

B

K₂O

C

Al₂O₃

D

Ni

Iron is not used alone as a catalyst in ammonia synthesis, because

A

Its activity declines rapidly, if heated to above 520°C

B

It decomposes ammonia

C

It gets oxidised above 500°C

D

None of these

Which is a catalyst promoter used in catalytic ammonia synthesis reaction?

A

Al₂O₃

B

Cr₂O₃

C

K₂O

D

MnO

A circular flower bed has diameter 4m. The flower bed is increased so that the diameter is now 12m. How many times larger is the new flower bed?

A

9

B

3

C

32

D

8

For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.

A

(i) platinum (ii) sulphur

B

(i) palladium (ii) oxygen

C

(i) nickel (ii) sulphur

D

(i) nickel (ii) oxygen

Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

A

Autocatalytic

B

Endothermic

C

Exothermic

D

Non-catalytic

Low grade coal is __________ to produce ammonia synthesis gas.

A

Hydrogenated

B

Liquefied

C

Gasified

D

Dehydrogenated

Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at

A

Rourkela (under SAIL)

B

Bokaro (under SAIL)

C

Sindri (under FCI)

D

Baroda (under G.S.F.C.)

Catalyst used in the oxidation of ammonia is

A

Platinum-beryllium

B

Platinum-rhodium

C

Cobalt-molybdenum

D

Platinum-molybdenum

Catalyst used in Haber's process for ammonia production is

A

Reduced iron oxide

B

Nickel

C

Vanadium pentoxide

D

Silica gel

In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.

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