__________ is the undesirable by-product produced in the manufacture of urea.

N₂ content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (molecular weight of urea = 60)

A

80%

B

90%

C

95%

D

98%

Consider a reaction of polymer formation by condensation polymerization, completed in n-steps, with the liberation of a certain byproduct. How many total molecules of byproduct are released as a result of complete reaction?

A

n+1

B

n

C

n-1

D

n/2

Nitrogen atoms of urea produced in the urea cycle are derived from ___________

A

Ammonia and aspartic acid

B

Nitrate

C

Nitrite

D

Ammonia

Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation?

A

Decrease in effect

B

Increase in thrust

C

Develops noise

D

Develops high pressure

Which of the following undesirable quality pertains to the undesirable use of additives?

A

To disguise the use of faulty processing and handling techniques

B

To deceive consumers and result in a substantial reduction of the nutritive value of the food

C

When the desired effect can be obtained by good manufacturing practices which are economically feasible

D

All of the mentioned

What is the undesirable product in urea production?

A

Ammonium carbonate

B

Biuret formation

C

Liquid NH3

D

Flakes formation

What is the important byproduct of soap manufacture unit?

A

Fatty acid product

B

Glycerin

C

Glycosides

D

Caustic soda

Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

A

Low bulk density product

B

Biuret formation

C

Non-spherical prills

D

Substantially wet non-flowing and sticky product

Spraying of urea at the rate of 3.5 kg per 100 m2 is to be done in a field. The dimensions of the field are as shown in the figure and all angles are right angles. Find the amount of urea required.

A

665 kg

B

518 kg

C

66.5 kg

D

51.8 kg

PM Modi inaugurates the world's first nano urea liquid plant in Gandhinagar, IFFCO had earlier last year introduced the world's first IFFCO 'Nano Urea'- it is included in which of the order?

A

The Fertilizer (Control) Order 1985.

B

The fertilizer supply (control) order 1975

C

The fertilizer (produce and supply) order 2013

D

The Fertiliser (Movement Control) Order, 1976

__________ is the undesirable by-product produced in the manufacture of urea.

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