Question 3 :
At constant pressure and temperature, the direction of any chemical reaction is one where, the decrease.

Question 4 :
The enthalpies of the elements in their standard states are assumed to be

Question 7 :
The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at is

Question 9 :
A closed flask contains water in all its three states, solids, liquid and vapour at <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7d1cd399925718ac6afbd"> In this situation the average KE of the water molecule will be:

Question 11 :
The exchange of heat energy during chemical reaction at constant temperature and pressure occurs in form of:

Question 13 :
A given mass of gas expands reversibly from the state {tex}A{/tex} to the state {tex}B{/tex} by three paths {tex}1 , 2{/tex} and {tex}3{/tex} as shown in the figure. If {tex}w_1 , w_ 2{/tex} and {tex}w_3{/tex} respectively be the work done by the gas along three paths then:<br> <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5efadb7a2cb6ea3d580629d4' class="uploaded-image" />

Question 14 :
A container has hydrogen and oxygen mixture in ratio of 1 : 1 by weight, then

Question 18 :
All the naturally occurring processes, <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7d29fab3481716f4b76e7"> spontaneous proceed spontaneously in a direction which leads to:

Question 19 :
For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, {tex} \Delta \mathrm { U } {/tex} and {tex} \mathrm { w } {/tex} corresponds to

Question 20 :
Which of the following statements is true? The entropy of the universe