Secondary hardening in steels arises out of the _____________________?
____________________ joint is mostly used for joining pipes carrying water at low pressure ?
Silicon percentage in the silicon steel used for electrical appliances/equipments is_________________?
Catalyst used in the ‘catalytic converter’ employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is__________________?
Annealing of cast iron__________________?
Thermistors are used in _____________ devices?
The dew point of moist air becomes ____________________ with decrease in its relative humidity ?
Basicity [%Cao + %MgO + %SiO2) of the slag in Indian blast furnace is in the range of___________________?
The most commonly used moderator in nuclear power plants is__________________?
Eutectic reaction for iron-carbon system occurs at a temperature of _______________ °C ?
