The metal that can be cut with a knife is
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How are elements arranged in the Modern Periodic Table?
If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is
Which of the following compounds has a double bond?
The percentage of carbon in CO2 is
Which of the following processes will take place the slowest for the same quantity of liquid?
Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia?
What is the other name of sodium carbonate?