1
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If solublity product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then which of the following relation between S and Ksp is correct ?
A
$$S = {\left( {{{{K_{sp}}} \over {929}}} \right)^{1/9}}$$
B
$$S = {\left( {{{{K_{sp}}} \over {6912}}} \right)^{1/7}}$$
C
$$S = {\left( {{{{K_{sp}}} \over {144}}} \right)^{1/6}}$$
D
$$S = {\left( {{{{K_{sp}}} \over {216}}} \right)^{1/7}}$$
2
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If Ksp of Ag2CO3 is 8 $$ \times $$ 10–12, the molar solubility of Ag2CO3 in 0.1 M AgNO3 is -
A
8 $$ \times $$ 10–12 M
B
8 $$ \times $$ 10–10 M
C
8 $$ \times $$ 10–13 M
D
8 $$ \times $$ 10–11 M
3
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A mixture of 100 m mol of Ca(OH)2 and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. The mass of calcium sulphate formed and the concentration of OH in resulting solution, respectively, are : (Molar mass of Ca (OH)2, Na2SO4 and CaSO4 are 74, 143 and 136 g mol–1 , respectively; Ksp of Ca(OH)2 is 5.5 × 10–6 )
A
13.6g, 0.28 mol L$$-$$1
B
13.6g, 0.14 mol L$$-$$1
C
1.9g, 0.28 mol L$$-$$1
D
1.9g, 0.14 mol L$$-$$1
4
JEE Main 2019 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pH of rain water, is approximately :
A
5.6
B
7.5
C
7.0
D
6.5
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