Insulation of liquid surface can be achieved by __________ on top of its surface.
Floating hollow polypropylene spheres
Spraying alumina powder
Putting cement
None of these
- In the Bayer's process, bauxite is digested under pressure using
- The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer…
- Which of the following rays has the least wavelength?
- Cold chisels hammers are made of
- Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
- In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres…
- Minimum number of members required to form a Public Limited Joint Stock Com-pany is
- If the head is doubled in & centrifugal pump, the power required will increase in the ratio of
- A solution which resists change in its pH value on addition of acid/alkali is called the __________…
- Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
- Leakage in a cooking gas cylinder is detected by
- The life of a ball bearing is inversely proportional to
- __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it…
- Square steel key is normally strong in failure by shear & crushing. Keys are normally made of __________…
- As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…
- The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________…
- Moist climate is the most favourable factor in the site selection far a
- The cathode in an electrochemical cell always carries
- Cassiterite is an ore of
- Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
- High endurance limit of carburised machine parts is because of the fact that carburisation
- In the diving apparatus, helium is used along with oxygen, because it is
- A pycnometer is used for the measurement of
- Pick out the wrong statement.
- Pick out the wrong statement.
- Triple point of water is
- Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
- Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam…
- Which of the following metals is the most prone to work hardening?
- With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________…