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Which one of the following is an electrophilic reagent? (NCERT )
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10%
KH3
57%
BF3
25%
H2O
7%
None of these:
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*imp* Arrange the following in decreasing Lewis acid strength -PF3, PCI3, PBr3, Pl3
(NCERT XII PG NO.217)
(NCERT XII PG NO.217)
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8%
PBr3 > Pl3 > PF3 > PCl3
28%
PCl3 > PBr3 > Pl3 > PF3:
38%
Pl3 > PBr3 > PCl3 > PF3
25%
PF3 > PCl3 > PBr3 > Pl3
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The shape of XeF4 is (NCERT XII pgno.206 )
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23%
tetrahedral
21%
pyramidal
53%
square planar
3%
linear
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*most imp* The number of P-O-P bonds in cyclic metaphosphoric acid is
(NCERT XII PGNO. 180)
(NCERT XII PGNO. 180)
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19%
2
25%
1
33%
4
22%
3
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*imp* Which of the following is not correctly match?
(NCERT XII ->NEET 2016)
(NCERT XII ->NEET 2016)
Anonymous Quiz
6%
PCl3-sp3 hybridisation
11%
PCl5 (solid)-[PtCl4]– [PtCl3]
16%
H3PO3 -tribasic
15%
PCl5-sp3d hybridisation
14%
Both a and b
20%
Both b and c
18%
All of the above
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On heating KCIO, we get (NCERT XI: 276)
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19%
KCl + O2 + O3
35%
KClO2 + O2
18%
KCI + O3
28%
KCl + O2
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*most imp* Arrange the following hydrides of group 16 elements in order of increasing stability
(NCERT XII: 236)
(NCERT XII: 236)
Anonymous Quiz
13%
H2O < H2Te < H2Se < H2S:
43%
H2O < H2S < H2Se < H2Te:
36%
H2Te < H2Se < H2S < H3O
8%
H2S < H2O < H2Te > H2Se:
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*imp* Among the following, which one is a wrong statement.
(NCERT XII : 278)
(NCERT XII : 278)
Anonymous Quiz
15%
pπ-dπ bonds are present in SO2
28%
PH5 and BiCl5 do not exist.
39%
SeF4 and CH4 have same shape.
17%
I3 has bent geometry.
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Argon is used (NCERT XII)
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19%
In filling airships
32%
In high temperature welding
39%
In radio therapy for treatment of cancer
9%
To obtain low temperature
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*imp* In the manufacture of sulphuric acid by contact process Tyndall box is used to
(NCERT XII : PGNO. 283)
(NCERT XII : PGNO. 283)
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12%
filter dust particles
42%
convert SO2 and SO3
35%
test the presence of dust particles
10%
remove impurities
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*imp* The function of Fe(OH)3 in the contact process is
(NCERT XII : 273)
(NCERT XII : 273)
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16%
to remove dust particle
36%
to detect colloidal impurity
33%
to remove arsenic impurity
14%
to remove moisture
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*most imp* Which of the following statements is not valid for oxoacids of phosphorus?
(NCERT XII : 279)
(NCERT XII : 279)
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17%
All oxoacids contain tetrahedral four coordinated phosphorus
34%
All oxoacids contain at least one P = O unit and one P – OH group
29%
Orthophosphoric acid is used in the manufacture of triple superphosphate:
20%
Hypophosphorous acid is a diprotic acid:
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*imp* Which of the following oxide can act as both reducing and oxidising agent?
(NCERT XII : 183)
(NCERT XII : 183)
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23%
Nitrogen dioxide
33%
Dinitrogen pentoxide
31%
Nitric oxide
12%
Dinitrogen oxide
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*imp* What colour does the compound dinitrogen trioxide appear in its liquid state?
(NCERT XII : 196)
(NCERT XII : 196)
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14%
Yellow
42%
Blue
39%
It is colourless
5%
Green
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*imp* Which of the following is not an alternative name of dinitrogen trioxide?
(NCERT XII : 189)
(NCERT XII : 189)
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25%
Nitrogen peroxide
28%
Nitrogen sesquioxide
25%
Anhydride of nitrous acid
22%
Nitrogen (III) oxide
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*most imp* What is the IUPAC name of NOCl?
(NCERT XII : 191)
(NCERT XII : 191)
Anonymous Quiz
21%
Nitroxy chlorine
31%
Nitrogen monoxy chloride
44%
Nitrosyl chloride
4%
Chloroxy nitrogen