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1
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For the following Assertion and Reason, the correct option is :

Assertion : The pH of water increases with increase in temperature.

Reason : The dissociation of water into H+ and OH– is an exothermic reaction.
A
Both assertion and reason are false.
B
Both assertion and reason are true, but the reason is not the correct explanation for the assertion.
C
Both assertion and reason are true, and the reason is the correct explanation for the assertion.
D
Assertion is not true, but reason is true.
2
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The strength of an aqueous NaOH solution is most accurately determined by titrating :
(Note : consider that an appropriate indicator is used)
A
Aq. NaOH in a pipette and aqueous oxalic acid in a burette
B
Aq. NaOH in a burette and aqueous oxalic acid in a conical flask
C
Aq. NaOH in a volumetric flask and concentrated H2SO4 in a conical flask
D
Aq. NaOH in a burette and concentrated H2SO4 in a conical flask
3
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively : JEE Main 2020 (Online) 8th January Morning Slot Chemistry - Ionic Equilibrium Question 83 English
A
XY, 2 × 10–6 M3
B
XY2, 1 × 10–9 M3
C
XY2, 4 × 10–9 M3
D
X2Y, 2 × 10–9 M3
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The molar solubility of Cd(OH)2 is 1.84 × 10–5 M in water. The expected solubility of Cd(OH)2 in a buffer solution of pH = 12 is :
A
2.49 × 10–10 M
B
1.84 × 10–9 M
C
6.23 × 10–11 M
D
$${{2.49} \over {1.84}} \times {10^{ - 9}}M$$
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