Related Questions
What is the correct answer?
4
In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?
What is the correct answer?
4
Galvanic corrosion cannot be prevented by
C. Usage of largest possible anodic area
What is the correct answer?
4
There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.
What is the correct answer?
4
Which of the following terminology is used for the temperature at which new grains are formed in a metal?
B. Lower critical temperature
C. Recrystallisation temperature
D. Upper critical temperature
What is the correct answer?
4
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?
What is the correct answer?
4
Titanium is added to molten aluminium alloys before casting for the purpose of
B. Increasing corrosion resistance
What is the correct answer?
4
What is the percentage of chromium in 18-4-1 high speed steel?
What is the correct answer?
4
The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.
What is the correct answer?
4
Which of the following is resistant to the action of both heat & chemicals?
What is the correct answer?
4
Which of the following does not discharge the dust collected as a dry solid?
A. Electrostatic precipitator
D. Gravity settling chamber
What is the correct answer?
4
Unbreakable crockeries are made from __________ polymers.
What is the correct answer?
4
A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is
What is the correct answer?
4
The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)
What is the correct answer?
4
Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be
What is the correct answer?
4
If the head is doubled in & centrifugal pump, the power required will increase in the ratio of
What is the correct answer?
4
On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is
What is the correct answer?
4
Which of the following is not categorised as the ore agglomeration process?
What is the correct answer?
4
The leaching solvent used in Baeyer's process for the purification of bauxite is
What is the correct answer?
4
Thermit welding uses the following energy source.
C. Energy of high velocity electrons
D. Heat generated by friction
What is the correct answer?
4
Which of the following contributes maximum as main source of sulphur in the blast furnace charge?
What is the correct answer?
4
Encyclopaedia of Chemical Technology has been
A. Authored by Kirk Othmer
B. Edited by Perry and Chilton
D. Authored by Perry and Chilton
What is the correct answer?
4
__________ of austenite decreases the hardenability in steel.
D. Dissolved elements (except cobalt)
What is the correct answer?
4
Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
What is the correct answer?
4
The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam.
What is the correct answer?
4
In TIG welding, thoriated tungsten electrodes are used, because it
A. Has higher current carrying capacity
B. Has better electron emissivity
C. Is stronger than ordinary tungsten
What is the correct answer?
4
Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.
What is the correct answer?
4
Pick out the wrong statement.
A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding
B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)
C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes
D. Mild steel sheet cannot be spot welded
What is the correct answer?
4
Ammonia gas can be dried by
What is the correct answer?
4
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 metres from the source of noise.
What is the correct answer?
4
Solute atoms which cause yield point phenomenon in mild steel are/is