[{"id":60287,"question":"Energy band theory is based upon","choices":[{"text":"Hund's Rule","value":"A"},{"text":"Heisenberg uncertainty principle","value":"B"},{"text":"Bohr's atomic Model","value":"C"},{"text":"Wave mechanical model","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":60286,"question":"Semiconductors have conductivity of order:","choices":[{"text":"10<sup>-8</sup> to 10<sup>-6</sup> (Ωm)<sup>-1</sup>","value":"A"},{"text":"10<sup>-6</sup> to 10<sup>-4</sup> (Ωm)<sup>-1</sup>","value":"B"},{"text":"10<sup>2</sup> to 10<sup>5</sup> (Ωm)<sup>-1</sup>","value":"C"},{"text":"10<sup>-5</sup> to 10<sup>-7</sup> (Ωm)<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60285,"question":"Conductors have conductivities of order:","choices":[{"text":"10<sup>3</sup>(Ωm)-1","value":"A"},{"text":"10<sup>7</sup>(Ωm)<sup>-1</sup>","value":"B"},{"text":"10<sup>7</sup>Ωm<sup>-1</sup>","value":"C"},{"text":"10<sup>-6</sup>Ω","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60284,"question":"Shear modulus is expressed as:","choices":[{"text":"G = tanθ/F/A","value":"A"},{"text":"F/A/tanθ","value":"B"},{"text":"F/tanθ","value":"C"},{"text":"tanθ/A","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60282,"question":"The ratio of applies &nbsp;stress to volumetric strain is called:","choices":[{"text":"Young modulus","value":"A"},{"text":"Shear modulus","value":"B"},{"text":"Bulk modulus","value":"C"},{"text":"Tensile modulus","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60280,"question":"The unit of strain is:","choices":[{"text":"Nm","value":"A"},{"text":"Nm<sup>-2</sup>","value":"B"},{"text":"no unit","value":"C"},{"text":"Nm<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60278,"question":"The SI unit of Stress is:","choices":[{"text":"Nm","value":"A"},{"text":"Nm<sup>2</sup>","value":"B"},{"text":"NM<sup>-2</sup>","value":"C"},{"text":"Nm<sup>3</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60276,"question":"Natural rubber is an example of:","choices":[{"text":"Crystalline solids","value":"A"},{"text":"Amorphous solids","value":"B"},{"text":"Polymeric solids","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60275,"question":"The solid with definite M.L are called:","choices":[{"text":"Crystalline","value":"A"},{"text":"Amorphous","value":"B"},{"text":"Polymeric","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":60273,"question":"The word amorphous means:","choices":[{"text":"Regular structured","value":"A"},{"text":"Without form or structure","value":"B"},{"text":"Frozen structured","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60272,"question":"There is regular arrangement of molecules in:","choices":[{"text":"Amorphous solids","value":"A"},{"text":"Crystalline solids","value":"B"},{"text":"Both a and b","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2458,"question":"Which of the following has bulk modulus?","choices":[{"text":"Water","value":"A"},{"text":"Gas","value":"B"},{"text":"Honey","value":"C"},{"text":"All","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2457,"question":"Coercive force is used to","choices":[{"text":"Demagnetize the material","value":"A"},{"text":"Magnetize the material","value":"B"},{"text":"Extend it","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":2455,"question":"At 0 K a piece of silicon is a","choices":[{"text":"Conductor","value":"A"},{"text":"Semi-conductor","value":"B"},{"text":"Insulator","value":"C"},{"text":"All","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2454,"question":"A pentaralent impurity in Si","choices":[{"text":"a free electron and a free hole","value":"A"},{"text":"a free hole","value":"B"},{"text":"a free electron","value":"C"},{"text":"No free particle","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":2453,"question":"The domain theory of magnet is important to explain the behaviour of","choices":[{"text":"Diamagnets","value":"A"},{"text":"Paramagnets","value":"B"},{"text":"Ferromagnets","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":2451,"question":"The curie temp for iron is about","choices":[{"text":"800<sup>o</sup>C","value":"A"},{"text":"740<sup>o</sup>C","value":"B"},{"text":"750<sup>o</sup>C","value":"C"},{"text":"650<sup>o</sup>C","value":"D"},{"value":"E"}],"correctAnswer":3}]