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
Which one of the following acid is used by Gold Smith for cleaning of gold and silver articles
Sulphuric acid
Nitric acid
Hydrochloric acid
Phosphoric acid
Which one of the following metal is not an essential component in stainless steel
Iron
Nickel
Chromium
Tin
Which one of the following is not a requirement for photosynthesis
Chlorophyll
CO2
Water
O2
Kerosene and petrol mixer can be best separated by
Sublimation
Separating funnel
Fractional distillation
Comprising and cooling
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
Gallium
Aluminium
Zinc
Silver
