Critical temperature for carbon dioxide and methane are `31.1 ^@C` and -`81.9 ^@C` respectively. Which of these has stronger intermolecular forces and why?

A wall of a room has dimensions of 6m xx 4m . It is 60 cm thick. Its thermal conductivity is is 2. If the temperature inside and outside is 20^@C and -5^@C respectively the amount of heat conducted every hour is about

The electronegativity values of C,H,O,N and S are 2.5, 2.1, 3.5, 3.0 and 2.5 respectively. Which of the following is the most polar?

The combustion enthalpies of carbon, hydrogen and methane are -395.5 "kJ" mol^-1, -285.8 "kJ" mol^-1 "and" -890.4 kJ mol^-1 "respectively at " 25^@C . The value of standard formation enthalpy of methane at that temperature is ____________ .

Solve the following problems : Suppose the masses of the calorimeter , the water in it and the hot object made up of copper which is put in the calorimeter are the same . The initaial temperature of the calorimeter and water is 30 ⁰C and that of the hot object is 60 ⁰C . the specific heats of copper and water are 0.09 cal/g ⁰C and 1 cal/g ⁰C respectively . what will be the final temperature of water ?

A, B, C and D are four different gases with critical temperatures 304.1, 154.3, 405.5 and 126.0 K respectively. While cooling, the gas which gets liquefied first is_______________

A,B,C and D are four different gases with critical temperatures 304.1, 154.3 , 405.5 and 126.0 K respectively. While cooling, the gas which gets liquefied first is "_____________" .

Three bodies A,B and C have equal areas which are painted red, yellow and black respectively. If they are at same temperature then