Q. No.On heating with concentrated NaOH solution in an inert atmosphere of CO2, white phosphorus gives a gas.
Incorrect statements among the following about the gas is:
1.
It is highly poisonous and has smell like rotten fish.
2.
It’s solution in water decomposes in the presence of light.
3.
It is more basic than NH3.
4.
It is less basic than NH3.
Incorrect statements among the following about the gas is:
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Which of the following elements does not show allotropy?
1. Nitrogen
2. Bismuth
3. Antimony
4. Arsenic
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Which of the following statements is wrong?
1. Single N–N bond is stronger than the single P–P bond.
2. PH3 can act as a ligand in the formation of coordination compound with transition elements.
3. NO2 is paramagnetic in nature.
4. Covalency of nitrogen in N2O5 is four.
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Elements of group-15 form compounds in +5 oxidation state. However, bismuth forms only one well characterised compound in +5 oxidation state. The compound is:
1. Bi2O5
2. BiF5
3. BiCl5
4. Bi2S5
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On heating ammonium dichromate and barium azide separately we get
1. N2 in both cases
2. N2 with ammonium dichromate and NO with barium azide
3. N2O with ammonium dichromate and N2 with barium azide
4. N2O with ammonium dichromate and NO2 with barium azide
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In the preparation of HNO3, we get NO gas by catalytic oxidation of ammonia.
The moles of NO produced by the oxidation of two moles of NH3 will be ______.
1. 2
2. 3
3. 4
4. 6
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Which of the following are peroxoacids of sulphur?
1. H2SO5 and H2S2O8
2. H2SO5 and H2S2O7
3. H2S2O7 and H2S2O8
4. H2S2O6 and H2S2O7
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Hot conc. H2SO4 acts as moderately strong oxidising agent. It oxidises both metals and nonmetals. Which of the following element is oxidised by conc. H2SO4 into two gaseous products?
1. Cu
2. S
3. C
4. Zn
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