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10 Question-answer on solids and crystals 1.        Which of the following is a crystalline solid (a)     Graphite (b)    Calcite (c)     Gallium (d)    Oxygen Ans: (b) 2.        According to Bravis, the number of possible space lattice is (a)     18 (b)    16 (c)     14 (d)    10 Ans: (c) 3.        Which of the following is not the property of a crystalline solid? (a)     Sharp melting point (b)    Flat faces (c)     Isotropic electrical conductivity (d)    Long range order Ans: (c) 4.        The space lattice of diamond is: (a)     Fcc (b)    Bcc with two atoms per unit cell (c)     Bcc with 4 atoms per unit cell (d)    Simple ...