XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 19
Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions
Q1. Ethylene gas when allowed to react with hydrogen gas in the presence of nickel like catalyst at high temperature, it produces ethane. This reaction is called
Q2. In the presence of dilute sulphuric acid and mercury sulphate as catalysts, ethylene produces
Q3. On dropping water on calcium carbide, a gas is produced with graphic like small and that burns with luminous flame, which of the following is that gas
Q4. In one of the tests to identify presence of acetylene, Ammonical Cuprous Chloride is used. Which color of the resultant compound confirms the presence of acetylene?
Q5. A property of acetylene is to polymerize. If three molecules of acetylene are allowed to polymerize in the presence of copper at elevated temperature, indicate which one will be the product
Q6. Vinyl chloride is produced by the reaction of HCI with
Q7. Carboxylic acids combine with acetylene in the presence of Hgo2 forming
Q8. Benzene is an aromatic compound obtained from
Q9. The stability of benzene molecule is attributed to
Q10. In the presence of nickel t elevated temperature, benzene can be reduced to
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