ECAT Pre Engineering Physics Chapter 17 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 17 Physics of Solid MCQ`s Test

Sr.#	Question	Answer
1	Every crystalline solid has	A. definite melting point B. different melting points C. may or may not be definite D. none of them
2	On heating, glass gradually softens into a paste like before it becomes a very viscous liquid at almost	A. 600°C B. 7600°C C. 800°C D. 900°C
3	A unit cell is smallest basic structure which is:	A. One dimensional B. Two dimensional C. Three dimensional D. Four dimensional
4	The valence band of an atom in a solid	A. is always empty B. may or may not be empty C. can never be empty D. none of them
5	When relatively simple molecules are chemically combined into massive molecules, the reaction is called:	A. Fission reaction B. Fusion reaction C. Polymerization D. Any of these
6	In a semi-conductor material, current flows due to	A. positive charge B. negative charge C. both of them D. none of them
7	A semi-conductor in its extremely pure form is known as	A. extrinsic semi-conductor B. intrinsic semi-conductor C. either of them D. none of them
8	Glass and high carbon steel are the examples of	A. brittle substances B. ductile substances C. plastic substances D. elastic substances
9	The solids are classified as:	A. Metals B. Crystalline C. Amorphous D. Polymeric
10	The charged nucleus of an atom itself spins its magnetic field	A. equal to the field produced by orbital electrons B. greater than the field produced by orbital electrons C. much weaker than the field produced by orbital electrons D. none of these