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51.

The enthalpy change for a reaction does not depend upon:A. the nature of intermediate stateB. the differences in initial and final temperatureC. the physical state of reactants and productD. use of different reactants for same reaction

Answer» Correct Answer - A
52.

A gas expands isothermally and reversibly. The work done by the gas isA. zeroB. minimumC. maximumD. equal to work done

Answer» Correct Answer - C
53.

Which of the following is false?A. Quantity of biomass in a trophic level at a particular period is called as standing cropB. The energy content in a trophic level is determined by considering a few individuals of a species in that trophic level.C. The succession that occurs in newly cooled lava is called primary succession.D. Rate of succession is faster in secondary succession

Answer» Correct Answer - B
54.

Which one of the following statement is false?A. Work is a state functionB. temperature is a state functionC. change in the state is completely defined when intial and final states are specifiedD. work appears at the boundary of the system

Answer» Correct Answer - A
55.

For an ionic solid of the general formula AB and coordination number 6, the value of ther radius ratio will be:A. greater than 0.73B. between 0.73 and 0.41C. between 0.41 and 0.22D. less than 0.22

Answer» Correct Answer - B
56.

The acceleration of a point on the rim of a flywheel 1 m in diameter, if it makes 1200 rpm isA. `8pir^(2)ms^(-2)`B. `80pi^(2)ms^(-2)`C. `800pi^(2)ms^(-2)`D. none of these

Answer» Correct Answer - C