Pick out the wrong statement. Termination of polymerisation reaction occurs, if the

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

Which of the following is not a suitable solid lubricant ?

The standard instrument used for calibrating the load applied by universal testing machine is called

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm² .

Pick the odd man out of the following.

The difference in the properties of a substance in three states of matter depends upon the

A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate ofW/m² . The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.

On an average __________ fast neutrons are produced by nuclear fission of each atom of uranium-235.

The reductant used in the extraction of magnesium from calcined dolomite via Pidgeon's process is

Value of a material is usually considered as a relationship between

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.W/m.K and thickness __________ metre.

Ignition of fuel in a diesel engine is by

The maximum value, which the residual stress in a material can reach is the __________ of the material.

__________ wire is never used for making the heating element.

Aluminium is extracted from

In a titration involving weak acid and strong base, the preferred indicator is

The type of water filter normally employed/ preferred for treating small quantities of water in railway stations and individual industries is the __________ filter.

A pipeline buried in soil is commonly protected from corrosion by

Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area ; in the casting)

Pick out the wrong statement.

The radioactive isotope of hydrogen is

Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K ? Thermal conductivity of metal and insulation material areand 0.1 W/m.°K respectively.

The dimensions of Planck's constant is the same as that of the

Hot working of lead is carried out at

Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.

Number of electrons in the outermost orbit of a semi-conductor is

Which of the following is not found in iron-carbon equilibrium diagram ?

Aromatics are desired constituents of

First empirical temperature scale conceived is the __________ temperature scale.

Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.

Which of the following heat treatment processes is used for softening the hardened material ?

Refrigerative cooling employed during long distance transportation of food stuffs is normally done by

Titanium is produced by __________ of Ti Cl₄.

Which set of materials is used as a moderator in nuclear reactor ?

Malleabilisation heat treatment is performed on

concentration of water vapor in air is equivalent to __________ ppm (parts per million).

An engineer's hammer is made of high __________ steel.

Impeller & casing of centrifugal pump handling corrosive liquid and frequently running under cavitation condition is most prone to __________ corrosion.

Which of the following is the most effective inhibitor of grain growth, when added in small quantity in steel ?

The condition of diffraction from a crystal is given by

Which of the following metals can not be extracted by pyrometallurgical process from its sulphide ore?

Galvanic corrosion

In continuous casting of liquid steel, the mould is made of

High __________ of cast iron makes it suitable for use in machine beds.

Internal cracks in drawn bars are due to

__________ strain gauge is the most sensitive sensing element for strain measurement.

For hardening high alloy steel, it is to be heated slowly and uniformly to avoid