Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
The gas used in welding and cutting of metals is Ethene Ethyne Propane Ethane
Ethene
Ethyne
Propane
Ethane
If steal is heated bright red hot and is then cooled slowly, the process is called
Annealing
Tempering
Smelting
Quenching
An alloy of copper and Zinc is called as
Bronze
Gunmetal
Stainless steel
Brass
The temporary hardness of water is due to the presence of
Magnesium sulphate
Calcium Hydroxide
Calcium sulphate
Calcium bicarbonate
Which one of the following is not a noble gas?
Neon
Argon
Hydrogen
Helium
