If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is
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Two or more elements combine to form a
Which of the following compounds has a double bond?
Choose the one which is different or odd from the following.
Which of the following is NOT a radioactive element?
Which of the following gases is used to prevent food material from getting oxidised?
Which of the following metals is a liquid at room temperature?
The smell that we get when LPG cylinder leaks is due to the presence of
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