[{"id":227468,"question":"Which type of impurity is to be added to a pure semi conductor crystal to provide holes.","choices":[{"text":"Monovalent","value":"A"},{"text":"Trivalent","value":"B"},{"text":"Tetravalent","value":"C"},{"text":"Pentavalent","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227467,"question":"To get N-Type the Ge is doped with","choices":[{"text":"Aluminium","value":"A"},{"text":"Arsenic","value":"B"},{"text":"Boron","value":"C"},{"text":"Indium","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227466,"question":"Glass and high steel carbon are example of.","choices":[{"text":"Ductile substances","value":"A"},{"text":"Brittle substances","value":"B"},{"text":"Soft substances","value":"C"},{"text":"Hard substances","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227465,"question":"Example of ductile substance is.","choices":[{"text":"Glass","value":"A"},{"text":"Wood","value":"B"},{"text":"Lead","value":"C"},{"text":"Oxygen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227464,"question":"Which one is not a ductile material","choices":[{"text":"Lead","value":"A"},{"text":"Steel","value":"B"},{"text":"Copper","value":"C"},{"text":"Wrought Iron","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227463,"question":"Which of the following does not undergo plastic deformation.","choices":[{"text":"Copper","value":"A"},{"text":"Wrought iron","value":"B"},{"text":"Head","value":"C"},{"text":"Glass","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227462,"question":"Substance which break just after the elastic limit is reached are called as.","choices":[{"text":"Ductile substances","value":"A"},{"text":"Hard substances","value":"B"},{"text":"Britto substances","value":"C"},{"text":"Soft substances","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227461,"question":"substance which undergo plastic deformation until they break are known as.","choices":[{"text":"Brittle substances","value":"A"},{"text":"Ductile substance","value":"B"},{"text":"Non magnetic substance","value":"C"},{"text":"Magnetic substance","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227460,"question":"Which one of the following is ductile substance.","choices":[{"text":"Copper","value":"A"},{"text":"Lead","value":"B"},{"text":"Wrought iron","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227459,"question":"The ability of a body to return to its original shape is called.","choices":[{"text":"Strain","value":"A"},{"text":"Stress","value":"B"},{"text":"Elasticity","value":"C"},{"text":"Plasticity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227458,"question":"Out of the following which material is brittle.","choices":[{"text":"Wrought iron","value":"A"},{"text":"Copper","value":"B"},{"text":"Tungsten","value":"C"},{"text":"High steel carbon","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227457,"question":"Young's modulus for water's is","choices":[{"text":"Zero","value":"A"},{"text":"1","value":"B"},{"text":"2","value":"C"},{"text":"3","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227456,"question":"The SI unit of stress is same as that of.","choices":[{"text":"Pressure","value":"A"},{"text":"Force","value":"B"},{"text":"Momentum","value":"C"},{"text":"Work","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227455,"question":"Which one of the following is polymeric solids","choices":[{"text":"Glass","value":"A"},{"text":"Nylon","value":"B"},{"text":"Copper","value":"C"},{"text":"Zinc","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227454,"question":"In glass, molecules are irregularly arranged so it is known as.","choices":[{"text":"Solid","value":"A"},{"text":"Liquid","value":"B"},{"text":"Solid liquid","value":"C"},{"text":"Gas","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227453,"question":"A solid in which there is not regular arrangement of molecules is called.","choices":[{"text":"Glassy solid","value":"A"},{"text":"<div>Amorphous solid</div>","value":"B"},{"text":"Crystalline solid","value":"C"},{"text":"Both a and b","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227452,"question":"the substances in which the atoms do not form magnetic dipoles are called.","choices":[{"text":"Diamagnetic","value":"A"},{"text":"Para magnetic","value":"B"},{"text":"Ferro magnetic","value":"C"},{"text":"Crystal","value":"D"},{"value":"E"}],"correctAnswer":4}]