1
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
In the chemical reaction between stoichiometric quantities of KMnO4 and KI in weakly basic solution, what is the number of moles of I2 released for 4 moles of KMnO4 consumed?
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2
JEE Advanced 2020 Paper 1 Offline
Numerical
+4
-0
5.00 mL of 0.10 M oxalic acid solution taken in a conical flask is titrated against NaOH from a burette using phenolphthalein indicator. The volume of NaOH required for the appearance of permanent faint pink color is tabulated below for five experiments. What is the concentration, in molarity, of the NaOH solution?
Exp. No. | Vol. of NaOH (mL) |
---|---|
1 | 12.5 |
2 | 10.5 |
3 | 9.0 |
4 | 9.0 |
5 | 9.0 |
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3
JEE Advanced 2019 Paper 2 Offline
Numerical
+3
-0
The mole fraction of urea in an aqueous urea solution containing 900 g of water is 0.05. If the density of the solution is 1.2 g cm$$-$$3, then molarity of urea solution is ................
(Given data : Molar masses of urea and water are 60 g mol$$-$$1 and 18 g mol$$-$$1, respectively)
(Given data : Molar masses of urea and water are 60 g mol$$-$$1 and 18 g mol$$-$$1, respectively)
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4
JEE Advanced 2019 Paper 2 Offline
Numerical
+3
-0
The amount of water produced (in g) in the oxidation of 1 mole of rhombic sulphur by conc. HNO3 to a compound with the highest oxidation state of sulphur is ..............
(Given data : Molar mass of water = 18 g mol$$-$$1)
(Given data : Molar mass of water = 18 g mol$$-$$1)
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Questions Asked from Some Basic Concepts of Chemistry (Numerical)
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