Pick out the wrong statement about the machinability of metals. Machinability of a metal ?
Increasing the carbon content of steel__________?
The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the __________ content in steel?
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________?
Out of the following, the most malleable material is__________?
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal__________?
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C ?
Oxyacetylene reducing flame is used while carrying out welding on__________?
Adhesives__________?
Name the safety device used to protect the boiler, when the water level falls below a minimum level ?
__________ rubber is generally used for making ‘O’ rings used for vacuum sealings?
A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient ?
Earing is a defect found in steels after the following metal working operation ?
Routing in production, planning & control is concerned with the__________?
Steel & cast iron pipes are produced by __________ casting ?
Magnesium is present in__________?
All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent ?
Highest cutting speed is achieved by the __________ tool material ?
Which of the following materials has the poorest electrical conductivity ?
For an ideal gas, Cp – Cv is__________?
Viscoelastic behaviour is observed in __________ materials?
Load cells used for the measurement of weight has__________?
The order of a chemical reaction__________?
With increase in temperature, the electrical conductivity of a __________ decreases ?
Which of the following if present in iron ore, enhances its value ?
Out of the following the refractive index is the highest for__________?
In a good rimming steel__________?
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that__________?
__________ furnace is generally used in the non-ferrous foundries ?
The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________?
Most of the phosphorous present in the blast furnace burden enters into__________?
Density in the solid state is slightly less than that in its liquid state, in case of__________?
Starting friction is low in case of the __________ lubrication?
Large scale fire on fuel gas line is normally extinguished by__________?
Which of the following metals is not subjected to electrolytic refining/purification ?
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism?
Temperature attained in soldering of metals is about __________ °C?
Which of the following are considered applications of ultrasonic testing ?
Most important property of steels for use in automobile bodies is the__________?
Preheating before welding is done to__________?
The product of a commercial direct reduction process is__________?
A 2 kg object weighs 1.8 kgf on a spring balance. The value of ‘g’ at that location in m/sec2 is__________?
When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively__________?
Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
Consideration of the creep is the most important in case of the__________?
Fine grained steels have__________?
If Reynolds number is greater than 1, then the__________?
Normalising of an object does not__________?
As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 meters from the source of noise?
The delivery pressure of boiler feed water pump compared to the boiler steam pressure is__________?
The trace metal present in insulin is__________?

Pick out the wrong statement?

A. Copper is the metal having the highest electronic conductivity
B. Hardenability & Weldability of metals are inversely related
C. Covalent bonding formed by sharing of electrons is present in all semi-conductor materials
D. Glass transition temperature applies to ‘polymers’ but not to ‘glasses’

Correct Answer: Copper is the metal having the highest electronic conductivity ✔

Last Updated: February 10, 2019