[{"id":154007,"question":"Number of spark plugs needed in diesel engine is:","choices":[{"text":"Four","value":"A"},{"text":"Five","value":"B"},{"text":"Six","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":154006,"question":"The efficiency of a particle heat engine:","choices":[{"text":"can be 100%","value":"A"},{"text":"Cannot be 100%","value":"B"},{"text":"Is always zero","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":154005,"question":"Carnot cycle is:","choices":[{"text":"Reversible","value":"A"},{"text":"Irreversible","value":"B"},{"text":"Sometimes A, Sometimes B","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":154004,"question":"In which process the change in internal energy of the system is zero:","choices":[{"text":"Isochoric process","value":"A"},{"text":"Isobaric process","value":"B"},{"text":"Adiabatic process","value":"C"},{"text":"Isothermal process","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":154003,"question":"The nature of thermal radiation is smaller to:","choices":[{"text":"Ultraviolet rays","value":"A"},{"text":"Light rays","value":"B"},{"text":"Both of them","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":154002,"question":"Avogadro number is known as number of molecules in:","choices":[{"text":"One kg of a substance","value":"A"},{"text":"Unit volume of a substance","value":"B"},{"text":"One mole of a substance","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3}]