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Home
Chemical Equilibrium Test - 58
Chemical Equilibrium Test - 58
Result
Chemical Equilibrium Test - 58
/
Score
-
Rank
Time Taken:
-
Question
1/10
4 / -1
Which of the following salt undergoes hydrolysis?
Correct
Wrong
Skipped
A
KCl
Correct
Wrong
Skipped
B
K
2
SO
4
Correct
Wrong
Skipped
C
NaNo
3
Correct
Wrong
Skipped
D
K
2
C
2
O
4
Question
2/10
4 / -1
On dissolving a salt in water (pH=7), the pH of the solution was found to be greater than 7. It must be salt of
Correct
Wrong
Skipped
A
strong acid, weak base
Correct
Wrong
Skipped
B
weak acid, strong base
Correct
Wrong
Skipped
C
strong acid, strong base
Correct
Wrong
Skipped
D
weak acid, weak base
Question
3/10
4 / -1
For the salt of weak acid and strong base, the hydrolysis constant is given by the expression
Correct
Wrong
Skipped
A
Correct
Wrong
Skipped
B
Correct
Wrong
Skipped
C
Correct
Wrong
Skipped
D
Question
4/10
4 / -1
Which of the following relations is correct for degree of hydrolysis of CH
3
COONH
4
?
Correct
Wrong
Skipped
A
Correct
Wrong
Skipped
B
Correct
Wrong
Skipped
C
Correct
Wrong
Skipped
D
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Solutions
Question
5/10
4 / -1
Which one of the following statements is incorrect?
Correct
Wrong
Skipped
A
In Group II of analysis, the solution is acidified before passing H
2
S to decreases S
2-
ion conc.
Correct
Wrong
Skipped
B
In Group IV, the solution is made ammoniacal before passing H
2
S to increase S
2-
ion concentration
Correct
Wrong
Skipped
C
Solubility products to sulphides of Group II radicals are higher than those of Group IV radicals
Correct
Wrong
Skipped
D
Solubility product can be calculated from the concentrations of the ions only if the solution is saturated
Question
6/10
4 / -1
During the precipitation of third group of qualitative analysis, ammonium chloride is added before adding ammonium hydroxide. The function of NH
4
Cl is to
Correct
Wrong
Skipped
A
increase the ionisation of NH
4
OH
Correct
Wrong
Skipped
B
supress the ionisation of NH
4
OH
Correct
Wrong
Skipped
C
convert the ions of group third into their respective chlorides
Correct
Wrong
Skipped
D
stabilise the hydroxides of Group III cations
Question
7/10
4 / -1
At 90
0
C, pure water has [H
3
O
+
] = 10
–6
mol L
–1
. What is the value of K
w
at 90
0
C ?
Correct
Wrong
Skipped
A
10
–6
Correct
Wrong
Skipped
B
10
–12
Correct
Wrong
Skipped
C
10
–14
Correct
Wrong
Skipped
D
10
–8
Question
8/10
4 / -1
Which of the following salts undergoes anionic hydrolysis?
Correct
Wrong
Skipped
A
CuSO
4
Correct
Wrong
Skipped
B
NH
4
Cl
Correct
Wrong
Skipped
C
FeCl
3
Correct
Wrong
Skipped
D
Na
2
CO
3
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Solutions
Question
9/10
4 / -1
Which of the following is most soluble?
Correct
Wrong
Skipped
A
Correct
Wrong
Skipped
B
Correct
Wrong
Skipped
C
Correct
Wrong
Skipped
D
Question
10/10
4 / -1
The best indicator for the detection of end point in titration of a weak acid and a strong base is
Correct
Wrong
Skipped
A
Methyl orange (3 to 4)
Correct
Wrong
Skipped
B
Methyl red (5 to 6)
Correct
Wrong
Skipped
C
Bromothymol blue (6 t0 7.5)
Correct
Wrong
Skipped
D
Phenolphthalein (8 to 9.6)
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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