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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- What happens when PCl5 is heated?
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- Complete the following reaction : 4Al+ 3 O2 rarr
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- Why is H2S less acidic than H2 Te ?
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- Describ chemistry of manufacture of nitric acid by Ostwald's process.
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- Why sulphuric acid is oily and viscous liquid ?
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- Molecular nitrogen N2 is not particularly reactive. Explain
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- Nichrome has the following composition-
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- Name any five oxoacids of phosphorus and write their formulas .
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- Why does PCl3 fume in moisture ?
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- Explain the following: NO2 dimerises to N2O4.
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- Express 1126 in roman numbers.
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- Express 1127 in roman numbers.
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- Express 1128 in roman numbers.
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- Express 1129 in roman numbers.
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- Express 1134 in roman numbers.
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- Express 1135 in roman numbers.
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- Answer the following question in one word- Fish plates used in railway...
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- Explain the manufacture of sulphuric acid by contact process.
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- Express 1130 in roman numbers.
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- Express 1131 in roman numbers.
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