A. Aluminium
B. Boron
C. Carbon
D. Nitrogen
Correct Answer: Carbon ✔
Last Updated: February 11, 2019
Related MCQs
- ‘Flare tower’ used in industry is meant for__________?
- The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?
- Common salt is produced from sea water in India generally by the __________ method?
- Which of the following phenomenon/ phenomena is/are diffusion controlled ?
- Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be__________?
- Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother ?
- While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?
- __________ the exhaust gas is an indication of the incomplete combustion of fuel?
- Which of the following terminology is used for the temperature at which new grains are formed in a metal ?
- In __________ process, there is an increase in entropy with no degradation of energy ?
- Air-petrol ratio in an automotive petrol engine is around __________?
- __________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength ?
- Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2) ?
- Pick out the wrong conversion of absolute & kinematic viscosities ?
- The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material?
- An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ?
- Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
- Nickel is a __________ material?
- The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the__________?
- Function of fusible plug in a boiler is to __________?
- High endurance limit of carburised machine parts is because of the fact that carburisation __________?
- Optical activity is a/an __________ property ?
- “Encyclopaedia of Chemical Technology” has been __________?
- Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle?
- A material being tested for endurance strength is subjected to the __________ load?
- __________ is not used as a material of construction in thermocouples ?
- A metal having a Poisson’s ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is__________?
- For dynamic strain measurement, the Wheatstone bridge used is of __________ type ?
- The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called__________?
- More than 95% of __________ is present in corundum ?
- L.D. (Linz-Donawitz) converter is used in the production of__________?
- Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?
- Constituents of stellite are __________?
- Which of the following pairs is not correctly matched ?
- When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the __________?
- Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag ?
- What happens, when SO2 is passed through a solution of H2S in water ?
- Pick out the wrong statement?
- Identify the false statement?
- Steels with high carbon equivalent have poor Weldability, because in these steels during welding__________?
- Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium__________?
- Joule-Thomson co-efficient is the ratio of__________?
- Which of the following material handling equipments is not suitable for moving materials in varying paths ?
- Pick out the wrong statement ?
- __________ property of a material is determined by the Herbert Pendulum device?
- The activity co-efficient of the solute in a dilute solution ?
- Insulation of liquid surface can be achieved by __________ on top of its surface?
- At absolute zero temperature, for any reaction involving condensed phases ?
- If a solid is compressed adiabatically in its elastic range, its __________ remains constant ?
- Natural water contains approximately __________ percent of heavy water?
- Exposure to __________ accelerates the degradation of plastics?