Easy 776 likes

Question

What will be the ratio of a number of molecules present in 1 L of H2 gas and 4 L of CO2 gas at STP?

WBBSE Class X Physical Science Behaviour of Gases 01 Mark 2023

Answer

d. 1 : 4

Explanation:

At STP, equal volumes of gases contain equal numbers of molecules (Avogadro’s law).

So, molecules ∝ volume ⇒ (1 L H₂) : (4 L CO₂) = 1 : 4.

Related Questions

More WBBSE Easy level questions

1/12
Easy
721
Q. What is the product of the pressure and volume of 32 g of O2 gas...
A. PV = nRT = 1 × 0.082 × 273 = 22.4 atm...
Easy
516
Q. What is the nature of P vs 1/V graph?
A. The nature of the P vs 1/V graph is hyperbolic.
Easy
965
Q. A real gas behaves as an ideal gas at (a) High pressure and high temperature...
A. (c) Low pressure and high temperature Explanation At low pressure and high...
Easy
509
Q. Write down the ideal gas equation for 1 mol gas.
A. PV=RT (where, n = 1)
Easy
715
Q. What are constants in Charles’ law?
A. In Charles' law, the constants are pressure and the mass of gas....
Easy
742
Q. What is SI unit of pressure of gas? 
A. The SI unit of pressure of a gas is the pascal (Pa).
Easy
997
Q. The P – V graph of Boyle’s Law related to gas is
A. (b) Explanation: The P-V graph (Pressure vs. Volume) related to Boyle's Law...
Moderate
924
Q. Draw I-V graph according to ohm’s law in the case of a metallic conductor.
A. I-V graph
Moderate
813
Q. At a certain pressure the volume of a fixed mass of a gas at a...
A. The increase in volume is Yo/273.
Moderate
790
Q. What is the value of PV for 4 g of H2 gas at STP? (H...
A. b. 2 RT Explanation: Number of mole (n) = 4/2 = 2...
Easy
Q. Write the volume of one mole oxygen gas at S.T.P.
A. At Standard Temperature and Pressure (S.T.P.), one mole of any gas occupies...
Easy
Q. According to Charles’ law, at (−) 273°C, the volume of any gas is infinite.
A. False Explanation At −273°C (0 K), the volume of an ideal gas...