Three statements are given below
(i) The enthyalpy of any element is zero in their stadard state
(ii) The heat of neutralisation for any strong acid strong base at `25^(@)C` is `-13.7` kJ/mole
(iii) `Q=DeltaE+W` is a mathematical form of first law of thermodynamics if work is done by the system according IUPAC

The mathematical form of the first law of thermodynamics when heat(q) is supplied and W is work done by the system(+ve) is:

If q is the heat added to the system, w is the work done by the system and Delta U is the change in internal energy, then according to first law of thermodynamics :

(i) Write first law of thermodynamics. give its mathematical form. ii) Calculate the internal energy change when 15 joule heat is given to the system and 5 joule work is done by the system.

The first law thermodynamics was gives as q=Delta U+(-w) , where q is heat given to a system and Delta U represent increase in internal energy and -w is work done by the system. Various process such as isothermal, adiabatic, cyclic, isobaric and isochoric process in terms to first law of thermodynamics leads for important results. The molar heat capacity for 1 mole of monoatomic gas is 3/2R at constant volume and 5/2R at constant pressure. Which of the following statements are correct:

The first law thermodynamics was gives as q=Delta U+(-w) , where q is heat given to a system and Delta U represent increase in internal energy and -w is work done by the system. Various process such as isothermal, adiabatic, cyclic, isobaric and isochoric process in terms to first law of thermodynamics leads for important results. The molar heat capacity for 1 mole of monoatomic gas is 3/2R at constant volume and 5/2R at constant pressure. A system is allowed to move from state A to B following path ACB by absorbing 80 J of heat energy. The work done by the system is 30 J. The work done by the system in reaching state B from A is 10 J through path ADB which statements are correct : 1. Increase in internal energy from state A to state B is 50 J. 2. If path ADB is followed to reach state B. Delta U = 50J 3. If work done by the system in path AB is 20 J, the heat absorbed during path AB = 70 J. 4. The value U_(C)-U_(A) is equal to U_(D)-U_(B) . 5. Heat absorbed by the system to reach B from A through path ADB is 60 J.

Directions: Each of the questions below consists of a question and two or three statements given below It. You have to decide whether the data provided in the statements are sufficient to answer the question 13) P is in which direction with respect to Q? I) M is to the North of R, who is to the West of Q. II) P is to the East of M. III) P is to the North-East of R. 1) Only I and II 2) Only I and III 3) Any two of the three 4) All I, II and III are necessary 5) Question cannot be answered even with the information in all three statements.