1 mole of NH3 gas at is expanded adaibatic condition to make volume 8 times (=1.33). Final temperature and work done respectively are-
1. 150 K, 900 cal
2. 150 K, 400 cal
3. 250 K, 1000 cal
4. 200 K, 800 cal
Which of the following statements is correct with regard to G of a cell reaction and EMF of the cell (E) in which the reaction occurs ?
(1) Both G and E are extensive properties
(2) G is an intensive property but E is an extensive property
(3) G is an extensive property and E is an intensive property
(4) Both G and E are intensive properties.
Temperature of 1 mol of a gas is increased by at constant pressure. Work done is-
1. -R
2. 2R
3. R/2
4. 3R
When 0.16 g of glucose was burnt in a bomb calorimeter, the temperature rose by 4 deg. Calculate the calorimeter constant (water equivalent of the calorimeter) given that [molar enthalpy of combustion]. Molar mass of glucose = 180 mol-1.
1.
2.
3.
4.
The C-Cl bond energy can be calculated from :
1.
2.
3.
4.
Given of DyCl3 (s) = -994.30 kJ mol-1
1. -966.5 kJ/mol
2. -699.43 kJ/mol
3. -596.6 kJ/mol
4. -569.6 kJ/mol
When 1 g H2 gas at S.T.P is expanded to twice its initial volume, then the work done is:
1. 22.4 L atm
2. 5.6 L atm
3. 11.2 L atm
4. 44.8 L atm
The gas absorbs 100 J heat and is simultaneously compressed by a constant external pressure of 1.50 atm from 8 lit. to 2 lit. in volume. Hence will be-
1. -812 J
2. 812 J
3. 1011 J
4. 911 J
If and then variation of EMF of a cell E, with temperature T, is given by
1.
2.
3.
4.
The standard heat of combustion of Al is -837.8 kJ mol-1 at which of the following releases 250 kcal of heat ?
1. The reaction of 0.624 mol of Al
2. The formation of 0.624 mol of Al2O3
3. The reaction of 0.312 mol of Al
4. The formation of 0.150 mol of Al2O3