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NumericalMCQ (Single Correct Answer)MCQ (Multiple Correct Answer)1
JEE Main 2022 (Online) 30th June Morning Shift
Numerical
+4
-1
A hydrocarbon 'X' is found to have molar mass of 80. A 10.0 mg of compound 'X' on hydrogenation consumed 8.40 mL of H2 gas (measured at STP). Ozonolysis of compound 'X' yields only formaldehyde and dialdehyde. The total number of fragments/molecules produced from the ozonolysis of compound 'X' is _____________.
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2
JEE Main 2022 (Online) 29th June Evening Shift
Numerical
+4
-1
In the given reaction,
The number of $$\pi$$ electrons present in the product 'P' is _________.
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3
JEE Main 2021 (Online) 18th March Evening Shift
Numerical
+4
-1
In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula [Ag(NH3)2]+ per aldehyde group to form silver mirror is ___________. (Round off to the Nearest Integer).
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4
JEE Main 2021 (Online) 18th March Evening Shift
Numerical
+4
-1
Consider the above reaction where 6.1 g of Benzoic acid is used to get 7.8 g of m-bromo benzoic acid. The percentage yield of the product is __________
(Round off to the Nearest Integer).
[Given : Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u, Br : 80.0 u]
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