Which of the following elements has the lowest melting point?
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Elements A, B and C occur as Dobereiners triads. If the atomic mass of A is 7 and that of C is 39, what will be the atomic mass of B?
Chemical formula for sulphurous acid is:
What is contained in Chlorophyll ?
The reactions in which oxidation and reduction occur simultaneously are called _______.
What chemical is injected into a person's body when an ant bites?
A solution that is at equilibrium must be
Haematite is an ore/mineral of
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