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1
JEE Main 2021 (Online) 25th July Morning Shift
Numerical
+4
-1
Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ___________ $$\times$$ 10$$-$$1 g. (in nearest integer)
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2
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
Methylation of 10 g of benzene gave 9.2 g of toluene. Calculate the percentage yield of toluene __________. (Nearest integer)
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3
JEE Main 2021 (Online) 22th July Evening Shift
Numerical
+4
-1
If the concentration of glucose (C6H12O6) in blood is 0.72 g L$$-$$1, the molarity of glucose in blood is ____________ $$\times$$ 10$$-$$3 M. (Nearest integer)

[Given : Atomic mass of C = 12, H = 1, O = 16 u]
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4
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
4g equimolar mixture of NaOH and Na2CO3 contains x g of NaOH and y g of Na2CO3. The value of x is ____________ g. (Nearest integer)
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