NEET Questions Solved


Which of the following on heating produces NO2?

(1) NaNO3

(2) AgNO3

(3) NH4NO3

(4) NH4NO2

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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The formation of PH+4 is difficult compared to NH+4 because

(1) lone pair of phosphorous is optically inert

(2) lone pair of phosphorous resides in almost pure p- orbital

(3) lone pair of phosphorous resides at sp3 orbital

(4) lone pair of phosphorous resides in almost pure s- orbital

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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Concentrated nitric acid reacts with iodine to give:

(1) HOI

(2) HI

(3) HOIO2

(4) HOIO3

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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Among the following compounds, which on heating do not produce N2?

(1) (NH4)2Cr2O7

(2) NH4Cl+NaNO2

(3) NH4Cl+CaO

(4) Ba(N3)2

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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Which of the following oxyacid contains both P-H and P-P bond simultaneously?

(1) H4P2O5

(2) H4P2O7

(3) H4P2O6

(4) None

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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In which process does the nitrogen undergo oxidation?

(1) N2 2NH3

(2) N2O 2NO2

(3) NO3 N2O5

(4) NO2NO3-

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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White phosphorous reacts with calcium to form a certain compound which on hydrolysis produces

(1) PH3

(2) H3PO4

(3) P4O6

(4) P4O10

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

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It is because inability of ns2 electrons of the valence shell to participate in bonding that

(a) Sn2+ is reducing while Pb4+ is oxidising agent

(b) Sn2+ is oxidising while Pb4+ is reducing agent

(c) Sn2+ and Pb2+ are both oxidising and reducing agent

(d) Sn4+ is reducing while Pb4+ is oxidising agent

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#2 | 15th Group: Properties: II
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Among the following, which one is a wrong statement?

(a) PH5 and BiCl5 do not exist
(b) ρp-dp bonds are present in SO2
(c) SeF4 and CH4 have same shape
(d) I3+ has bent geometry

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#7 | 17th Group
#2 | 15th Group: Properties: II
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group 17 ,preparation and properties
group 15 ,preparation and properties
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When copper is heated with conc. HNO3 it produces
(a) Cu(NO3)2 and NO       (b)Cu(NO3)2,NO and NO2
(c)Cu(NO3)2 and N2O       (d) Cu(NO3)2 and NO2

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#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

Concept Questions :-

group 15 ,preparation and properties
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