Pick out the wrong statement?
Pick out the wrong statement ?
Steel produced from phosphatic iron is __________ in nature?
Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its__________?
Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type__________?
Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm?
Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature ?
On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is__________?
‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?
Ammonia gas can be dried by__________?
The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air?
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________?
Brazing filler metal used for joining steel plates__________?
The activity of pure hydrogen gas at 1000°C and 5 atm pressure__________?
Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
__________ metal is used as a bearing liner material?
Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C?
The ‘laughing gas’ is__________?
Heat transfer by __________ is almost absent in case of fluidised bed drying operation?
What is the range of tempering temperature (°C) for most of the materials ?
Boiler draught of 10 mm water column is equivalent to__________?
Surface tension of a liquid__________?
Gas turbine normally employs a constant __________ cycle?
Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method?
An example of unsteady non uniform flow is the flow of liquid under pressure through a__________?
A material subjected __________ must have high resilience?
A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place__________?
Lead is added to 60:40 brass primarily to improve__________?
Glass reacts with__________?
Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of__________?
Which one can be directly solidified from gaseous state without entering into liquid state ?
Cold heading or upsetting is categorised as the __________ process ?
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be__________?
The most abundant metal present in the earth’s crust is__________?
A material being tested for endurance strength is subjected to the __________ load ?
Notched bar test is used for testing the __________ of a material?
The unit of gc is __________?
One of the methods of purification of leach liquor is ion exchange, which involves__________?
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh ?
Silicon percentage in acid resistant cast iron is about __________?
The atmospheric temperature during melting of ice/snow (in the atmosphere)__________?
__________ is not a case hardening process ?
Calorific value of __________ are almost same?
Identify the correct statement with reference to the extractive metallurgy of aluminium ?
The main charge in blast furnace is usually__________?
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an__________?
Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent in steel?
In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of__________?
Removal of non-condensable from steam or other vapour is termed as the __________ process?
__________ cannot increase the fatigue strength of a material?
Production of a hollow product by inflation of a tube or parison is called the __________ process?

Pick out the wrong statement ?

A. Geothermal energy is a non-conventional source of energy
B. Mass is converted into energy in both nuclear fission & fusion reaction
C. Inhalation of mercury vapour is not harmful for human beings
D. Inhalation of arsenic causes cancer

Correct Answer: Inhalation of mercury vapour is not harmful for human beings ✔

Last Updated: February 12, 2019