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Q. Aluminium surface are often anodised. This means the deposition of a layer of
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Q. What is the main constituent of ‘Gobar Gas’ (biogas) ?
Q. Commercial nitric acid is coloured as it contains dissolved:
Q. What is the chemical name of bleaching powder?
Q. What is the heaviest noble gas?
Q. The micro-nutrients provided by inorganic fertilisers are
Q. Methane contributes towards global warming so it is called a _________________ gas.
Q. A chemical compound made from two elements is
Q. The compound(s) produced during the formation of photochemical smog is/are:
Q. The compound dissolved in water to give a solution of pH lower than seven is
Q. Which of the following is the maximum number of electrons that can be present in M-shell?
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