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Which one is not categorized as green house gas?
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
Silicon carbide is used in activity called
The variety of coal in which the deposit contains recognizable traces of the original plant material is
What are the gases that are used for wielding purpose
When an iron nail gets rusted, iron oxide is formed
Which of the following is a non metal that remains liquid at room temperature?
Property to absorb moisture from air on exposure is called
Which of the following is the hardest substance on earth
Quartz crystals is chemically called
Select the gas that is normally in the electric bulbs
Chemical formula for water is
Chemical name for washing soda is
Which of the following gases in air makes the Brass discolored in air?
Average salinity of water is
Which central metal is there in naturally occurring chelate compound called Chlorophyl?
Metals that form amalgam with other metals is called
Select one that is use as lubricant
