1
JEE Main 2022 (Online) 26th June Morning Shift
Numerical
+4
-1

On complete combustion 0.30 g of an organic compound gave 0.20 g of carbon dioxide and 0.10 g of water. The percentage of carbon in the given organic compound is _____________. (Nearest integer)

2
JEE Main 2022 (Online) 25th June Evening Shift
Numerical
+4
-1

A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27$$^\circ$$C. At 03:00 pm, when the temperature is 45$$^\circ$$, the pressure in the tank will be _________ atm. [nearest integer]

3
JEE Main 2022 (Online) 24th June Evening Shift
Numerical
+4
-1

At 300 K, a sample of 3.0 g of gas A occupies the same volume as 0.2 g of hydrogen at 200 K at the same pressure. The molar mass of gas A is ____________ g mol$$-$$1. (nearest integer) Assume that the behaviour of gases as ideal.

(Given : The molar mass of hydrogen (H2) gas is 2.0 g mol$$-$$1.)

4
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
An empty LPG cylinder weighs 14.8 kg. When full, it weighs 29.0 kg and shows a pressure of 3.47 atm. In the course of use at ambient temperature, the mass of the cylinder is reduced to 23.0 kg. The final pressure inside of the cylinder is _________ atm. (Nearest integer)

(Assume LPG of be an ideal gas)
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