Thermodynamics questions
1906 published questions with worked solutions.
- Allotropy is exhibited by all of the following EXCEPT _____
- The CORRECT order of the thermal stability of hydrogen halides (H – X) is ______ [AIEEE 2005]
- - and -forms of sulphur are at equilibrium at a temperature known as
- Which one of the following has lowest bond dissociation energy ?
- The element that does no exhibit allotropy is [MHTCET 2019]
- Calorific value is in the order
- The ratio (W/Q) for a carnot - engine is 1 6 . Now the temp. of sink is reduced by 62^ C , then this ratio becomes twice,...
- Cell reaction is spontaneous when :
- 2 Zn + O _2 2 ZnO , G^ = -616 J 2 Zn + S _2 2 ZnS , G^ = -293 J S _2 + 2 O _2 2 SO _2, G^ = -408 J G^ for the following reaction...
- At 27^ C latent heat of fusion of a compound is 2930 J/mol . Entropy change is :
- A scientist says that the efficiency of his heat engine which work at source temperature 127^ C and sink temperature 27^ C to...
- Change in enthalpy for reaction 2 H _2 O _2(l) 2 H _2 O (l) + O _2(g) If heat of formation of H _2 O _2(l) and H _2 O (l) are...
- When 1 mol gas is heated at constant volume temp. is raised from 298 to 308 K. Heat supplied to the gas is 500 J. Then which...
- Enthalpy of CH _4 + 1 2 O _2 CH _3 OH is negative. If enthalpy of combustion of CH _4 and CH _3 OH and x and y respectively. Then...
- The efficiency of carnot engine is 50% and temperature of sink is 500K. If temperature of source is kept constant and its...
- Unit of entropy is :
- In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true :
- 2 mole of ideal gas at 27^ C temp. is expanded reversibly from 2 lit. to 20 lit. Find entropy change (R = 2 cal/mol K) :
- Heat of combustion H^ for C(s) , H _2 (g) and CH _4 (g) are -94, -68 and -213 Kcal/mol. then H^ for C(s) + 2 H _2 (g) CH _4 (g)...
- An ideal gas heat engine operates in a Carnot cycle between 227^ and 127^ . It absorbs 6 kcal at the higher temperature. The...
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration