Question 1 :
Temperatures of two hot bodies $B_{1}$ and $B_{2}$ are $100^{\circ}C$ and $80^{\circ}C$ respectively. The temperature of surrounding is $40^{\circ}C$. At $t = 0$, the ratio of rates of cooling of the two bodies (liquid) $R_{1} : R_{2}$ will be:
Question 2 :
An isolated system is one which neither shows an exchange of ____nor ____with surroundings.
Question 3 :
Which of the following is not a state function?<br/><b>a.</b> $U + PV$      <b>b.</b> $q + w$     <b>c.</b> $\cfrac { q_ {rev} }{ T }$       <b>d.</b> $q$<br/>
Question 4 :
The temperature at the bottom of a high water fall is higher than that at the top because
Question 5 :
Which one of the following systems is an example of a closed system?
Question 7 :
${ N }_{ 2 }(g)+3{ H }_{ 2 }(g)\rightleftharpoons 2N{ H }_{ 3 }(g)$<br>$\Delta { H }^{ o }=-18\quad kJ$<br>According to Le-Chateliers principal the favourable condition for good yield of $NH_{3}$
Question 9 :
Assertion: The presence of reactants in the closed vessel made of conducting material is an example of a closed system.
Reason: In a closed system, there is no exchange of matter but exchange of energy is possible between the system and the surroundings.
Question 10 :
Fill in the blank. <br/>Thermodynamics is the branch of science concerned with ____ and ________ and their relation to energy and work. <br/>
Question 13 :
Which of the following are true for all the systems ?
Question 16 :
Choose the correct answer. A thermodynamic state function is a quantity : 
Question 17 :
In a closed insulator container, a liquid is stirred with a paddle to increase the temperature. Which of the following is true?<br>
Question 20 :
A system in thermodynamic equilibrium will have the minimum value for-? <br>
Question 21 :
If ${S}^{o}$ for ${H}_{2},{Cl}_{2}$ and $HCl$ are $0.13,0.22$ and $0.19{kJ{K}}^{-1}$ ${mol}^{-1}$ respectively. The total change in standard entropy for the reaction<br/>${H}_{2}+{Cl}_{2}\rightarrow 2HCl$ is:
Question 22 :
Assertion: There cannot be chemical equilibrium in an open system.
Reason: There is no fixed mass in an open system.
Question 24 :
Alkali metal when exposed to air tarnish quickly due to the ________.<br/>
Question 27 :
Choose the correct answer form the alternatives given.<br>All alkali halides are soluble in water except LiF. The low solubility of LiF in water is due to its ______(i) the low solubility of CsI is due to ______(ii). LiF is soluble in ______(iii) solvents.
Question 30 :
Among the alkali metals, the metal with the<br/>highest ionisation potential is:<br/>
Question 34 :
As per observation (iii) LiH is more stable than NaH, because :
Question 36 :
In presence of iron, alkali metal react with liquid ammonia and form:
Question 38 :
Which of the following can form a super oxide very easily?<br>
