Question 3 :
When you open a soft drink bottle, the bubbles oozes through the opening. The bottle contains gas which is highly compressed. Guess the gas.

Question 4 :
The matter which has a fixed shape and volume with particles closely packed together with little movement is called ________________.

Question 5 :
At 300 K and under pressure of 100 atm the Z for O₂ is 0.96. At 600 K and under pressure of 150 atm the Z for O₂ is 0.8 for the same mass of O₂. If the volume of O₂ at 300 K and 100 atm press is 2L, then what mass of O₂ (g) is required to fill a vessel of capacity 200 L at 600 K & 150 atm ?

Question 6 :
In van der Waals equation of state of the gas law, the constant {tex} b {/tex} is a measure of

Question 7 :
A sample of an ideal gas was heated from 300C to 600C at constant pressure. Which of the following statement(s) is/are true.

Question 9 :
For the non-zero values of force of attraction between gas molecules, gas equation will be :

Question 10 :
There is a standard value of temperature and pressure at which the molar volume of gas is <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e79848ed3f9ab617fcdb600' height='21' width='48' >The correct values are

Question 12 :
In a bonded molecule, the order of repulsion between the bonded and non-bonded electrons is

Question 16 :
The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species, {tex} \mathrm { K } ^ { + } , \mathrm { Ca } ^ { 2 + } {/tex} {tex} \mathrm { Mg } ^ { 2 + } , \mathrm { Be } ^ { 2 + } ? {/tex}

Question 17 :
Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule {tex} \mathrm { B } _ { 2 } {/tex} is

Question 19 :
An ionic bond A+ B- is most likely to be formed when :

Question 20 :
Aqueous solution of two compounds M₁-O-H and M₂-O-H are prepared in two different beakers. If the electronegativity of M₁ = 3.4 , M₂ = 1.2, O = 3.5 and H = 2.1, then the nature of two solution will be respectively -

Question 21 :
Atomic number and not the atomic weight is the fundamental property of an element was enunciated by:

Question 24 :
In ground state, all the elements of group 13 of the periodic table are having same number of : <br/>

Question 25 :
In which of the following arrangements the order is NOT according to the property indicated against it ?

Question 26 :
The first element of a group differs in many ways from the other heavier members of the group. This is due to :

Question 28 :
An inert gas with more than one orbit, has ____ electrons in its outermost shell.

Question 29 :
An element X occurs in short period having configuration ns²np¹. The formula and nature of its oxide is -

Question 33 :
The number of structural isomers for {tex} \mathrm {C _ { 6 } H _ { 14 }} {/tex} is

Question 40 :
How many isomers are possible for {tex}\mathrm { C _ { 4 } H _ { 8 } O}{/tex}