Which of the following rays has the least wavelength?
Ultraviolet rays
Infrared rays
Cosmic rays
X-rays
- The product (s) of roasting of a sulphide ore is (are)
- Which of the following is not the function of a volute casing provided in a centrifugal pump?
- Which of the following is not a characteristic observed in material failure by fatigue fracture?
- Silicon percentage in silicon steel used for electrical equipments is about
- Ammonia leakage in the refrigeration system is detected by
- Maximum change in the hardness of martensite occurs in the carbon content range of __________ percent…
- Tempering of a material does not improve its
- The underground well of a biogas plant is called the
- __________ property of steel increases by addition of large amount of silicon in it.
- Which of the following is an unconventional source of energy?
- The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature…
- In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular…
- Yield strength of a polycrystalline metal with an average grain size d, is proportional to
- If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________…
- The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed…
- Electrometallurgy is not involved in the extraction of __________ from its ore.
- Tumbling is the process of improving the __________ of the materials/parts.
- Which of the following materials has the least scrap value?
- The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume :…
- Which of the following hardness tests does not measure the indentation hardness of metals and alloys?
- Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation…
- The same volume of all gases is representative of their
- Maximum hardenability of steel depends upon its
- According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear…
- What is the value of entropy at 273°K?
- Pick out the correct combination about the role of various additives used in polymers.
- Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles…
- In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates,…
- Milk is fat dispersed in water. It is an example of
- Main constituent of bone ash is