Topic: p-Block Elements, Test No.: 06, Total MCQs: 10
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Question 1 |
The inert gas abundantly found in atmosphere is
Ar | |
Ne | |
Xe | |
He |
Question 2 |
Among the following substituted silanes the one which will give
rise to cross linked silicone polymer on hydrolysis is [AIEEE 2008]
R4Si | |
RSiCl3 | |
R2SiCl2 | |
R3SiCl |
Question 3 |
When plants and animals decay, the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of _____.[Karnataka CET 2005]
Ammonia | |
Elements of nitrogen | |
Nitrates | |
Nitrides |
Question 4 |
Excess of PCl5 reacts with conc. H2SO4
giving [Karnataka CET 2008]
chlorosulphonic acid | |
thionyl chloride | |
sulphuryl chloride | |
sulphurous acid |
Question 5 |
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 |
Question 6 |
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 |
Question 7 |
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?
Ar, Kr | |
Xe, Kr | |
He, Ne | |
Xe, Ar |
Question 8 |
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 only | |
NaNO2 and NaNO3 | |
NaNO3 only |
Question 9 |
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 |
Question 10 |
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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