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Chemistry Chemistry Difficulty: Medium

The major harmful gas emitted by automobile vehicle which causes air pollution is

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Which is the hardest in the following? Sintered crucible is made up of________________? MgO solution is . . . . . . . . Consider the following statements. 1. Dynamite is prepared by mixing nitroglycerine with saw dust and ammonium nitrate. 2. Liquor poisoning is due to the presence of methyl alcohol. 3. Ethanol is generally present in tonics. Which of the above are correct? The electrovalent compounds is made up of