Question 1 :
Identify the correct combination from the following:<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>Column I</td><td>Column II</td></tr><tr><td>A</td><td>Hydrogen</td><td>Hydrogen bonding</td></tr><tr><td>B</td><td>Hydrogen iodide</td><td>Dipole-dipole forces</td></tr><tr><td>C</td><td>Ammonia</td><td>Hydrogen bonding</td></tr><tr><td>D</td><td>Mercury</td><td>Vander waals forces</td></tr><tr><td>E</td><td>Magnesium oxide</td><td>Dipole-dipole forces</td></tr></tbody></table>

Question 2 :
What type of attraction occurs between the partial positively charged hydrogen atom in one water molecule and the partial negatively charged oxygen atom in another water molecule?

Question 3 :
In which of the following molecule dipole dipole interaction is absent:

Question 4 :
Assertion: The volume of $1$ mole of an ideal gas at $1$ bar pressure at $25^{0}C$ is $24.78$ L<br/>Reason: $1$ bar $=0.987$ atm<br/>

Question 5 :
Why does HF has the maximum boiling point amongst all hydrogen halides ?

Question 6 :
The density of $NH_3$ at $30^oC$ and $5$ atm pressure is:<br/>

Question 9 :
Which of the following is true due to intermolecular H- bonding in HF?

Question 10 :
What needs to exist in order for a dipole-dipole force to happen?

Question 11 :
Viscosity of a liquid arises due to strong intermolecular forces existing between the molecules. Stronger the intermolecular forces, greater is the viscosity.&#160;Name the intermolecular forces existing in the following liquids : Water and glycerine

Question 12 :
Complete the second pair of given analogous pair based on the pattern followed by the first pair:Melt : Liquid : : Freeze : ?

Question 13 :
Which of the following molecules does not have net dipole moment?

Question 16 :
Which of the following compounds can form $H$-bonding with each other?

Question 19 :
The volume of $N{H}_{3}$ gas desorbed from charcoal surface at STP is:

Question 21 :
Among the following mixtures, dipole-dipole as the major interaction, is present in

Question 24 :
In which of the following chemical equation, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

Question 25 :
When you use a hair straightener, while straightening your hairs, it breaks down your hairs due to:

Question 26 :
A gas occupies a volume of $250$ ml at $745$ mm Hg and $25^{\circ}$C. What additional pressure is required to reduce the gas volume to $200$ ml at the same time?

Question 27 :
On the basis of the given structures, identify the pair of molecules containing hydrogen bonding:

Question 28 :
A student obtained the values of cohesive energy for four types of crystals as $764, 447, 108$ and $7.74 kJ/mol$ respectively. If the crystals used by him are Ar, Na, Si and $NaCl$, then the correct correlation is :<br/>

Question 29 :
The attractive forces between polar molecules are ________ forces and between non-polar molecules are ______ forces.

Question 31 :
The boiling point of alkyl halide are higher than those of corresponding alkanes because of:

Question 32 :
Just because you mix two things together does not necessarily mean they will form a homogeneous mixture (a solution). For example, if you add sodium chloride, $NaCl$, to a container that has both hexane and water, the $NaCl$ will dissolve into the water, but will not be found in the hexane $C_{6}H_{14}$.<br>Which of the following statement BEST explains these observations?

Question 33 :
Which one of the following compounds is shown its strongest hydrogen bonding?

Question 35 :
The force responsible for the union of two ice&#160;blocks into a single block is:

Question 37 :
Which of the following condition favours the existence of a substance in the solid state?

Question 39 :
A sample of neon gas is contained by a closed 5-liter vessel. The temperature of container is 25$^o$C and pressure is 1.5&#160;&#160;atmospheres&#160;(<em>R</em>&#160;is equal to 0.08 L atm/mol K).<br/>Find the expressions which is equal to the molar quantity of gas in the sample?<br/>

Question 40 :
The $pH$ of pure water at ${25}^{o}C$ and ${60}^{o}C$ are $7$ and $6.5$ respectively. $HCl$ gas is passed through water at ${25}^{o}C$ till the resulting $1$ litre solution aquires a $pH$ of $3$. Now $4\times {10}^{-3}$ mole of $NaCN$ are added into this solution. Also a fresh $0.1M$ $HCN$ solution has $pH$ $5.1936$. Now in the one part of solution obtained after addition of $NaCN$, one millimole of $NaOH$ are added and in the second part of this solution $0.5$ miili mole of $HCl$ are added.The volume of $HCl$ passed through the solution at ${25}^{o}C$ and $1$ atm is :

Question 41 :
Among the following mixtures, dipole-dipole as the major interaction is present in :

Question 42 :
Which type intermolecular force is most likely the most significant intermolecular force for a compound with a low boiling point and a medium molecular weight?