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Home
P - Block Elements Test - 55
P - Block Elements Test - 55
Result
P - Block Elements Test - 55
/
Score
-
Rank
Time Taken:
-
Question
1/10
4 / -1
KF combines with HF to form KHF
2
. The compound contains the species
Correct
Wrong
Skipped
A
K
+
, F
-
and H
+
Correct
Wrong
Skipped
B
K
+
, F
-
and HF
Correct
Wrong
Skipped
C
K
+
and [HF
2
]
-
Correct
Wrong
Skipped
D
[KHF]
+
and F
2
Solutions
Question
2/10
4 / -1
The correct order of acidity of halogenic acids is
Correct
Wrong
Skipped
A
HF < HCl < HBr < HI
Correct
Wrong
Skipped
B
HI < HBr < HCl < HF
Correct
Wrong
Skipped
C
HI < HCl < HBr < HF
Correct
Wrong
Skipped
D
HF < HBr < HI < HCl
Question
3/10
4 / -1
Which of the following is most volatile ?
Correct
Wrong
Skipped
A
HF
Correct
Wrong
Skipped
B
HCl
Correct
Wrong
Skipped
C
HBr
Correct
Wrong
Skipped
D
HI
Question
4/10
4 / -1
Which one of the following is used for the separation of noble gas mixture from air ?
Correct
Wrong
Skipped
A
Charcoal
Correct
Wrong
Skipped
B
90% CaC
2
+ 10% CaCl
2
Correct
Wrong
Skipped
C
Soda lime + potash solution
Correct
Wrong
Skipped
D
90% CaCO
3
+ 10% urea
Question
5/10
4 / -1
Which of the following pair have identical shape ?
Correct
Wrong
Skipped
A
CH
4
, SF
4
Correct
Wrong
Skipped
B
BCl
3
, ClF
3
Correct
Wrong
Skipped
C
XeF
2
, ZnCl
2
Correct
Wrong
Skipped
D
SO
2
, CO
2
Question
6/10
4 / -1
The structure of XeOF
4
is
Correct
Wrong
Skipped
A
trigonal bipyramidal
Correct
Wrong
Skipped
B
square planar
Correct
Wrong
Skipped
C
square pyramidal
Correct
Wrong
Skipped
D
pyramidal
Solutions
Question
7/10
4 / -1
Which of the following pairs contains isoelectronic species ?
Correct
Wrong
Skipped
A
Be and Li
+
Correct
Wrong
Skipped
B
P
+
and S
-
Correct
Wrong
Skipped
C
N
2-
and Ne
Correct
Wrong
Skipped
D
O
2-
and Na
+
Question
8/10
4 / -1
Which of the following sets has the atoms and/or ions in the correct order of increasing size ?
Correct
Wrong
Skipped
A
Ne < F
-
< O
2-
Correct
Wrong
Skipped
B
Br
-
< Cl
-
< F
2-
Correct
Wrong
Skipped
C
Na
+
< Mg
2+
< Al
3+
Correct
Wrong
Skipped
D
P < S < Cl
Question
9/10
4 / -1
In Ramsay and Rayleigh's isolation of noble gases from air, the nitrogen of the air is finally converted into
Correct
Wrong
Skipped
A
NaNO
2
only
Correct
Wrong
Skipped
B
NO and NO
2
Correct
Wrong
Skipped
C
NaNO
3
only
Correct
Wrong
Skipped
D
NaNO
2
and NaNO
3
Solutions
Question
10/10
4 / -1
Molecules of a noble gas do not posses vibrational energy because a noble gas
Correct
Wrong
Skipped
A
is monoatomic
Correct
Wrong
Skipped
B
is chemically inert
Correct
Wrong
Skipped
C
has completely filled shells
Correct
Wrong
Skipped
D
is diamagnetic
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
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