Topic: p-Block Elements, Test No.: 06, Total MCQs: 10
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The inert gas abundantly found in atmosphere is
Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is [AIEEE 2008]
When plants and animals decay, the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of _____.[Karnataka CET 2005]
Elements of nitrogen
Excess of PCl5 reacts with conc. H2SO4 giving [Karnataka CET 2008]
The noble gas mixture is cooled in a coconut bulb at 173 K. The gases that are not adsorbed are [Karnataka CET 2007]
He and Ne
Ar and Kr
He and Xe
Ne and Xe
What products are expected from the disproportionation reaction of hypochlorous acid? [AIEEE 2006]
HClO3 and Cl2O
HClO2 and HClO4
HCl and Cl2O
HCl and HClO3
In the Dewar's method of separation of noble gases, the mixture of noble gases is kept in contact with coconut charcoal at 173 K. Which one of the following gaseous mixtures is not absorbed on to the charcoal?
In Ramsay and Rayleigh’s isolation of noble gases from air, the nitrogen of the air is finally converted into [Karnataka CET 2011]
NO and NO2
NaNO2 and NaNO3
Which of the following statements regarding sulphur is incorrect? [AIEEE 2011]
The oxidation state of sulphur is never less than +4 in its compounds
S2 molecule is paramagnetic
The vapour at 200°C consists mostly of S8 rings
At 600°C the gas mainly consists of S2 molecules
Which one of the following is not true at room temperature and pressure [West Bengal JEE 2011]
P4O10 is a white solid
SO2 is a coloureless gas
SO3 is a colourless gas
NO2 is a brown gas
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