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JEE Mains | PYQ

The number of chlorine atoms in \( 20 \ \text{mL} \) of chlorine gas at STP is ________ \( \times 10^{21} \). (Round off to the Nearest Integer) [Assume chlorine is an ideal gas at STP \( R = 0.083 \ \text{L bar mol}^{-1}\text{K}^{-1}, \ N_A = 6.023\times 10^{23} \)]

Which one of the following is the correct \( PV \) vs \( P \) plot at constant temperature for an ideal gas? (\( P \) and \( V \) stand for pressure and volume of the gas respectively)

At \( 363 \, \text{K} \), the vapour pressure of A is \( 21 \, \text{kPa} \) and that of B is \( 18 \, \text{kPa} \). One mole of A and \( 2 \) moles of B are mixed. Assuming that this solution is ideal, the vapour pressure of the mixture is _______ \( \text{kPa} \). (Round off to the Nearest Integer).

The formula of a gaseous hydrocarbon which requires \( 6 \) times of its own volume of \( \mathrm{O}_2 \) for complete oxidation and produces \( 4 \) times its own volume of \( \mathrm{CO}_2 \) is \( \mathrm{C}_x \mathrm{H}_y \). The value of \( y \) is _________.