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Chemistry mcq questions and answers for competitive exams UPSC SSC , SSC CGL, SSC CHSL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
Alloys made with mercury as one metal are called?
The number of electrons presents in H+ is
The hardest form of carbon is
Natural rubber is a polymer derived from?
The octane number of zero is assigned to
=The National Chemical Laboratory is situated in
The isotope atoms differ in?
Elements that show the properties of both metals and non metals are called?
The most commonly used bleaching agent is
What is the hardest form of carbon?
Conduction band electrons have more mobility than holes because they are
Atomic number of an element gives
Why is phosphorus kept under water?
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