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JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
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The 1st, 2nd and 3rd ionisation enthalpies, I1, I2 and I3, of four atoms with atomic numbers n, n + 1, n + 2, and n + 3, where n < 10, are tabulated below. What is the value of n?

JEE Advanced 2020 Paper 2 Offline Chemistry - Periodic Table & Periodicity Question 1 English
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2
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
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Consider the following compounds in the liquid form :

O2, HF, H2O, NH3, H2O2, CCl4, CHCl3, C6H6, C6H5Cl

When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?

JEE Advanced 2020 Paper 2 Offline Chemistry - Chemical Bonding & Molecular Structure Question 10 English
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3
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
Change Language
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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4
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
Change Language
An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of 1 mL of 3% H2O2, a blue alcohol layer was obtained. The blue colour is due to the formation of a chromium (VI) compound 'X'. What is the number of oxygen atoms bonded to chromium through only single bond in a molecule of X?
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