An oxidation process is accompanied with decrease in the
Number of electrons
Oxidation number
Number of ions
All (A), (B) & (C)
- Alloying elements present in Haynes stellite, which has superior performance than high speed steel,…
- The pressure outside a bubble/droplet of liquid is __________ the internal pressure.
- Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________…
- Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
- M10 index of coke indicates its
- __________ is a special constituent of chlorophyll without which photosynthesis is not possible.
- Which of the following materials does not form adherent oxide film on surface?
- Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts…
- Between 230 and 370°C, blue brittleness is caused in mild steel because of the
- Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
- A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure…
- Density in the solid state is slightly less than that in its liquid state, in case of
- __________ temperature remains constant during adiabatic saturation process of unsaturated air.
- A psychrometer does not measure the __________ temperature of moist air.
- Often earing defects are found during deep drawing operation, because the
- Thermistors are used in __________ devices.
- The activity of pure hydrogen gas at 1000°C and 5 atm pressure
- Nusselt number/Biot number varies
- Which of the following is an ore dressing operation?
- Triple point of water is
- The only suitable method for hardening the low carbon steel is case hardening. Which of the following…
- Hydrogen can be
- The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed…
- Carbon supply in pack carburising process is in the form of
- Increasing the carbon content of steel
- Which one is neutral in character?
- Preheating before welding is done to
- Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with…
- The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress…
- Pick out the wrong statement.