21.
In which of the following activities silicon carbide is used?

22.
The average salinity of seawater is

23.
When an iron nail gets rusted, iron oxide is formed

24.
Galvanised iron sheets have a coating of

25.
Among the various allotrope of carbon

26.
The group of metals Fe, Co, Ni may best called as:

27.
Heavy water is:

28.
The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:

30.
Non stick cooking utensils are coated with

Read More Section(General Science)

Each Section contains maximum 100 MCQs question on General Science. To get more questions visit other sections.