12TH CHEMISTRY CHAPTER 1ST OBJECTIVE QUESTIONS
BY VIKAS LODHI 12TH CHEMISTRY CHAPTER 1ST OBJECTIVE QUESTIONS Question 1. Choose the correct answers: Question 1. Due to Frankel defect, density of ionic solids : (a) Decreases (b) Increases (c) Does not change (d) It changes. Answer: (c) Does not change Question 2. In CsCl each Cl is surrounded by how many Cs : (a) 8 (b) 6 (c) 4 (d) 2. Answer: (a) 8 Question 3. Frenkel defect is not shown by : (a) AgBr (b) AgCl (c) KBr (d) ZnS. Answer: (c) KBr Question 4. In NaCl crystal number of oppositely charged ions situated at equal distance are: (a) 8 (b) 6 (c) 4 (d) 2 Answer: (b) 6 Question 5. Best conductor of electricity is : (a) Diamond (b) Graphite (c) Silicon (d) Carbon (non – crystalline). Answer: (b) Graphite Question 6. Which type of point defect is found in NaCI crystal of KCl crystal: (MP 2009 Set D) (a) Frenkel defect (b) Schottky defect (c) Lattice defect (d) Impurity defect. Answer: (b) Schottky defect Question 7. How many space lattices (Bravais lattice) can be obtained from...
