Cation Vacancy

Imperfections in Solids – I

Defects in Non-Stoichiometric Compounds: The compounds in which the ratio between numbers of anions to number of anions is not equal to ratio indicated by the formula. Metal Excess Defect Metal Deficiency Defect. a. Metal Excess Defect: In these compounds there is an excess of cations along with the electrons occurs. 1. Anion Vacancy: ⇒ Read more about Imperfections in Solids – I[…]

Clock Puzzles Logo

Clock Puzzle 2 (With Answers)

Puzzle-1: Where should the hour hand point to on the bottom clock?Answer: Hour hand is pointing to 2. Explanation: Multiply the hour hand value by 2 and add the minute hand value. This total is always 15. Puzzle-2: What time should the bottom clock show?Answer: Five minutes to ten Explanation: Start with the top left clock face, and move around the Read more about Clock Puzzle 2 (With Answers)[…]

Clock Puzzles Logo

Clock Puzzle 2

Puzzle-1: Where should the hour hand point to on the bottom clock?Puzzle-2: What time should the bottom clock show?Puzzle-3:  Where should the hour hand point to on the bottom clock?Puzzle-4: What time should the last watch show?Puzzle-5: Where should the hour hand point to on the bottom clock?

schottky-defect

Imperfections in Solids

Defects in Crystals: In a perfect crystal all the particles are present at their respective positions. However, no crystal is perfect, every crystal is associated with some deviations. These deviations are called defects (or) imperfections. These are mainly two types. Stoichiometric defects Non- Stoichiometric defects Stoichiometric defects: The compounds in which ratio between number of Read more about Imperfections in Solids[…]

Riddles

Riddles 4

Riddle 1:  If you throw a red stone into the blue sea what it will become? Riddle 2:  What looks like half apple? Riddle 3:  What can you never eat for breakfast? Riddle 4:  What happened when wheel was invented? Riddle 5:  Bay of Bengal is in which state?