Explore topic-wise MCQs in Engineering.

Fertiliser plants get their N₂ requirements

Cellulose is the main contituent of most __________ fibres.

__________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

Catalyst used in the manufacture of NH₃ by Haber's process is finely divided

Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex ?

Automobile steering wheels are normally made of

Lavatory cisterns are normally made of

Buna-S is a __________ material.

Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.

Which of the following is generally not used as eord for synthetic rubber tyre casing ?

__________ is not a polyester fibre.

The synthetic fibres produced from __________ are known as rayon.

Celluloid is

Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Fusion point of an acidic refractory material is

Which is required in an insulating refractory ?

'Super refractories' are made from pure

Chromite refractories are

Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ C in absence of air.

Commercial fertilisers are available mostly in the form of

Ammonia synthesis gas is produced from natural gas by

Caprolactum, a raw material for the manufacture of nylon-6, is produced from

The monomer of poly vinyl chloride (PVC) is

Buna-S is also known as

Regenerators are installed in

Hydrogen bomb employs the nuclear fusion of

Sodium melts (at atmospheric pressure) at a temperature of __________ C.

The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.

Fast breeder Test Reactor (FBTR) is located at

Tarapur atomic power station

The largest stable nucleus is

MeV is the unit of

In a nuclear explosion, the energy is released primarily in the form of __________ energy-

Which of the following is not, a fertile material ?

Hydrogen has __________ isotopes.

Energy equivlant to one atomic mass unit (amu) is __________ MeV.

Molten sodium (as a coolant in fast breeder reactor)

A nuclear reactor can't be used for

Final product of uranium extraction plant at Jadugoda (Bihar) is

Which one is the radioactive isotope of hydrogen ?

A homogeneous reactor is the one, in which the

The atomic number of a radioactive element is not changed, when it emits __________ rays.

Which of the following is a moderating material used in nuclear reactor ?

The decay product of tritium (a beta emitter) is

Heat is generated in a nuclear reactor (thermal) by

The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.

Which of the following may not need a moderator ?

The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.

Which is the most commonly used molten metal for cooling of nuclear reactors ?

The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight.