The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
The element common to all acids is
Non stick cooking utensils are coated with
Monazite is an ore of
Carbon, diamond and graphite are together called
Recently a term 'Roshni' was in the news. The term is related to -
When a ray of light passes from an optically denser medium to a rarer medium, it
The time period of a seconds pendulum is
The nuclear fuel in the sun is
In diesel engine, ignition is caused by
he mass-energy equivalence, relationship E = mc2 was propounded by
The filament of bulb is made of
Anti-knocking can be lessened by
In which of the following oxidation shows a positive oxidation state.
Which of the following is used in photography?