1
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
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The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M), respectively, are: (Take molar mass of hydrogen peroxide as 34 g/mol)
A
0.85 and 0.5
B
0.85 and 0.25
C
1.7 and 0.25
D
1.7 and 0.5
2
JEE Main 2020 (Online) 3rd September Evening Slot
Numerical
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The number of JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Biomolecules Question 126 English groups present in a tripeptide Asp–Glu–Lys is ____.
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3
JEE Main 2020 (Online) 3rd September Evening Slot
Numerical
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6.023 $$ \times $$ 1022 molecules are present in 10 g of a substance 'x'. The molarity of a solution containing 5 g of substance 'x' in 2 L solution is _____ × 10-3
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4
JEE Main 2020 (Online) 3rd September Evening Slot
Numerical
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If 250 cm3 of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses of A and B is ______ × 10–2 (to the nearest integer).
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