Mention a phenomenon by which it can be said that the gas molecules are in constant motion. Mention two incorrect postulates of the Kinetic Theory of gas. [1+2]
WBBSE
Class X
Physical Science
Behaviour of Gases
03 Mark
2024
Phenomenon: Brownian motion shows that gas molecules are in constant motion.
Two incorrect postulates of Kinetic Theory of Gases:
- The volume of gas molecules is negligible compared to the volume of the container.
- There are no forces of attraction or repulsion between gas molecules.
Related Questions
More WBBSE Moderate level questions
1/12
Q.
Write whether the following statement is true or false: According to Charles’ law, at (–)...
A.
False Explanation: Charles' law states volume becomes zero at absolute zero (-273°C),...
Q.
How can the given conversion be carried out?
A.
The given conversion of ethene (H₂C = CH₂) to ethane (H₃C –...
Q.
State the resistance of 220 V – 100 W bulb
A.
Power (P) = Resistance (R) = = = = 484 Ω
Q.
For which value of the angle of incidence in refraction of light is Snell’s law...
A.
Snell’s law is not applicable when the angle of incidence is 0°.
Q.
Write whether the following statement is true or false: If coefficient of linear expansion of...
A.
True Explanation: Coefficient of cubical expansion γ = 3 × coefficient of...
Q.
What is the number of molecules present in 16 g of O₂ at S.T.P.?
A.
3.011 × 10²³ Explanation: Given mass = 16 g Molecular mass =...
Q.
Write the name of monomer of a polymer which is used to prepare non-stick utensils.
A.
Tetra fluoro ethylene Explanation: Polytetrafluoroethylene (PTFE or Teflon) is used for non-stick...
Q.
Write down the IUPAC name of the following organic compound
A.
2-Bromopropane or (1) CH₃–CH₂–CH₂–OH → Propane-1-ol(2) CH₃–CH(OH)–CH₃ → Propane-2-ol
Q.
Name the metal which is extracted in thermite process.
A.
Fe Explanation: Thermite process reduces metal oxides using Al at high temperature...
Q.
Fill up the blank: CaC₂ + N₂ → ____ + C
A.
CaNCN / CaCN₂ (Calcium cyanamide) Explanation: Haber's process uses Fe as catalyst...
Q.
What happens when an iron spoon is dipped into acidified copper sulphate solution?
A.
When an iron spoon is dipped into acidified copper sulphate solution, a...
Q.
Left Column 2.2.1 Metal present in German silver 2.2.2 A transuranium element 2.2.3 The metal...
A.
2.2.1 – (d), 2.2.2 – (c), 2.2.3 – (b), 2.2.4 – (a)....