XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 20
Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions
Q1. The hydrogen of benzene can be substituted by different ions under different conditions. If the ion replacing hydrogen is positively charges, it is called
Q2. For the nitration of certain organic compounds concentrated H2SO4 is used as
Q3. Further nitration of nitrobenzene will be at which position
Q4. In following aromatic compounds which one is containing nitrogen in it?
Q5. The other name of picric acid is
Q6. When sodium benzoate is treated with caustic soda, it is converted into
Q7. Paraffins are also called
Q8. Polyethylene is produced from ethylene at high temperature and pressure. This is an example of
Q9. The most stable hybridization resulted from the combination of ‘s’ and ‘p’ orbitals is
Q10. Mono Halo derivatives of alkanes are called
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