Which category of Hydrogen releases water vapour and a by product when burnt?
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Which of the following is used in the preparation of tincture iodine, cough syrup and many tonics?
Apart from proposing atomic theory, what did John Dalton researched on?
Air ___________________ are the substances which contaminate the air.
Which of the following group is NOT Dobereiner Triads?
Methane contributes towards global warming so it is called a _________________ gas.
Which of the following elements has the lowest melting point?
What is the pH of water?
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