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Which catalyst is used in contact process?
- Fe2O3
- V2O5
- SO3
- Ag2O
- N/A
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Answer: B Explanation: -
Which of the following specie has the maximum number of unpaired electron?
- O2
- O2+
- O2-2
- O2-
- N/A
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Answer: A Explanation: -
Which one of the following does not exhibit allotropy ?
- Bi
- As
- N
- P
- N/A
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Answer: B Explanation: -
Which of the following is the most abundant element on the earth crust
- Al
- B
- Si
- O
- N/A
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Answer: D Explanation: -
The anhydride of nitric acid is
- N2O4
- N2O3
- N2 O5
- NO2
- N/A
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Answer: D Explanation: -
Which of the following is the 2nd most abundant element on the earth crust
- Al
- B
- Si
- O
- N/A
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Answer: C Explanation: -
Which of the following gives brown ring with FeSO4
- NO3-
- NO2
- NO
- N2O3
- N/A
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Answer: A Explanation: -
Which of the following halogen halide is the weakest acid in the solution.
- HCl
- HF
- HI
- HBr
- N/A
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Answer: B Explanation: -
Chlorine heptaoxide reacts with water to form
- hypochlorous acid
- perchloric acid
- chloric acid
- chlorous acid
- N/A
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Answer: B Explanation: -
Hydrogen bond is the strongest between the molecules of :
- HF
- HCl
- HBr
- HI
- N/A
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Answer: A Explanation: