[{"id":156883,"question":"Stress is defined in terms of:","choices":[{"text":"Applied force","value":"A"},{"text":"<span style=\"font-size: 12px;\">Deformation</span>","value":"B"},{"text":"Formation","value":"C"},{"text":"Any of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":1},{"id":156882,"question":"The ability of body to return to its original shape (after the force is removed) is called:","choices":[{"text":"Elasticity","value":"A"},{"text":"Ductility","value":"B"},{"text":"Stress","value":"C"},{"text":"Strain","value":"D"},{"text":"Any of these","value":"E"}],"correctAnswer":1},{"id":156881,"question":"When a body is subjected to some external force, deformation is produced in:","choices":[{"text":"Shape","value":"A"},{"text":"Length","value":"B"},{"text":"Volume","value":"C"},{"text":"Any of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":4},{"id":156880,"question":"Polymers have specific gravity which is:","choices":[{"text":"Low as compared to even the lightest metal","value":"A"},{"text":"High as compared to the heaviest metal","value":"B"},{"text":"Intermediate","value":"C"},{"text":"Any of these","value":"D"},{"text":"None of tese","value":"E"}],"correctAnswer":1},{"id":156877,"question":"Polymers are the chemical combination of carbon with:","choices":[{"text":"Nitrogen","value":"A"},{"text":"Oxygen","value":"B"},{"text":"Hydrogen","value":"C"},{"text":"All of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":4},{"id":154255,"question":"Polymers are the physical combinations of carbon with:","choices":[{"text":"Oxygen only","value":"A"},{"text":"Hydrogen","value":"B"},{"text":"Nitrogen","value":"C"},{"text":"All of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":5},{"id":154254,"question":"Examples of crystalline solids are:","choices":[{"text":"Copper","value":"A"},{"text":"Zirconia","value":"B"},{"text":"NaCI","value":"C"},{"text":"All of these","value":"D"},{"text":"Both A and B","value":"E"}],"correctAnswer":4},{"id":154253,"question":"Examples of polymeric substances are:","choices":[{"text":"Plastic","value":"A"},{"text":"Synthetic rubbers","value":"B"},{"text":"Zirconia","value":"C"},{"text":"All of these","value":"D"},{"text":"Both A and B","value":"E"}],"correctAnswer":4},{"id":154252,"question":"The structure of the polymeric solid is:<br>","choices":[{"text":"An ordered structure","value":"A"},{"text":"A disordered structure","value":"B"},{"text":"Intermediate between order or disorder","value":"C"},{"text":"Any of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":154251,"question":"When relatively simple molecules are chemically combined into massive molecules, the reaction is called:","choices":[{"text":"Fission reaction","value":"A"},{"text":"Fusion reaction","value":"B"},{"text":"Polymerization reaction","value":"C"},{"text":"Any of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":154249,"question":"Each atom in a metal crystal:","choices":[{"text":"Remains fixed","value":"A"},{"text":"Vibrates about a fixed point","value":"B"},{"text":"Moves randomly","value":"C"},{"text":"Rotates about the centre of the crystal","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":2},{"id":154247,"question":"In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:","choices":[{"text":"Adhesive forces","value":"A"},{"text":"Nuclear forces","value":"B"},{"text":"Inter atomic cohesive force","value":"C"},{"text":"Electromagnetic force","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":154246,"question":"The pattern of NaCI particles have a shape which is:","choices":[{"text":"Cubic","value":"A"},{"text":"Body centred cubic","value":"B"},{"text":"Simple cubic","value":"C"},{"text":"Face centred","value":"D"},{"text":"Both A and C","value":"E"}],"correctAnswer":5},{"id":154244,"question":"The whole structure obtained by the repetition of unit cells is called:","choices":[{"text":"Crystal lattice","value":"A"},{"text":"Amorphous solid","value":"B"},{"text":"Polymeric solid","value":"C"},{"text":"Polystrene","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":1},{"id":154243,"question":"The temperature at which the vibrations become so great that structure of the crystal breaks up, is called:","choices":[{"text":"Critical temperature","value":"A"},{"text":"Temperature of vaporization","value":"B"},{"text":"Melting point","value":"C"},{"text":"Both A and C","value":"D"},{"text":"Both A and B","value":"E"}],"correctAnswer":3},{"id":154242,"question":"Tick the one which is not a crystalline solid:","choices":[{"text":"Zirconia","value":"A"},{"text":"Glass","value":"B"},{"text":"Copper","value":"C"},{"text":"Ceramic solid","value":"D"},{"text":"An ionic compound","value":"E"}],"correctAnswer":2},{"id":154241,"question":"A unit set is the smallest basic structure which is:","choices":[{"text":"One dimensional","value":"A"},{"text":"Two dimensional","value":"B"},{"text":"Three dimensional","value":"C"},{"text":"Four dimensional","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":154240,"question":"The arrangement or molecules or atoms in a crystalline solid can be studied by using:","choices":[{"text":"Chemical methods","value":"A"},{"text":"Neutrons","value":"B"},{"text":"X-ray techniques","value":"C"},{"text":"Copper atoms","value":"D"},{"text":"Both A and B","value":"E"}],"correctAnswer":3},{"id":154239,"question":"In a cubic crystal, all the sides meet at:","choices":[{"text":"60<span style=\"font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">°</span>","value":"A"},{"text":"90<span style=\"font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">°</span>","value":"B"},{"text":"109<span style=\"font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">°</span>","value":"C"},{"text":"30<span style=\"font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">°</span>","value":"D"},{"text":"10<span style=\"font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;\">°</span>","value":"E"}],"correctAnswer":2}]