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You are asked to jog in a circular track of radius 35 metres. Right at one complete round on the circular track, your displacement and the distance covered by you are respectively

A cyclist is travelling with a uniform speed on a straight road. After traveling 700 m, one of the tyres of the cycle got punctured. He decided to cover the rest of the distance (300 m) by walking with the cycle. He covers the remaining 300 m in 7 minutes. If the cyclist takes a total of 12 minutes to complete his journey, then what is his average speed during the journey?

Which of the following are in direct variation or in invese variation? (? Tw (6) Number of articles (x) and their cost (v) (i) Distance (x) and time () when speed is uniform (same) (ii) Speed (x) and time () when distance covered is same. (iv) If cost of x pencils is Rs 20 and cost of one pencil is (), is a multiple of25 paise) (v) Number of balls (x) and weight of balls ) (vi) Number of workers (r) to complete a work and number of days (0) to complete the (vii) Number of bricks (x) and their weight ()all bricks are identical] (vii) Weight of guavas is (x) and their cost is Rs 100 and cost of per kg of guava is () [v is a multiple of 4 mpea

Chemical reactions involve interation of atoms and molecules. A large number of atoms // molecules ( approximately 6.023xx10^(23)) are present in a few grams of any chemical compound varying with their atomic // molecular masses. To handle such large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry, and radiochemistry. The following example illustrates a typical case, involving chemical // electrochemical reaction, which requires a clear understanding of the mole concept. A 4.0M aqueous solution of NaCl is prepared and 500mL of this solution is electrolyzed. This leads to the evolution of chlorine gas at one of the electrodes ( atomic mass of Na is 23 and Hg is 200)(1F=96500C) . The total charge ( coulomb ) required for complete electrolysis is

Chemical reaction involve interaction of atoms and molecules. A large number of atoms/molecules (approximately 6.022xx10^(23) )are present in a few grams of any chemical compound varying with their atomic/molrcular mass. To handle such a large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical in diverse areas such as analytical chemistry, biochemistry, electrochemistry and radiochemistry. The following example illustrates a typical case, involving chemical/ electrochemical reaction, which requires a clear understanding of the mole concept. A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of teh electrodes (atomic mass: Na=23, Hg=200, 1F=96500 coulombs) The total charge in couloms required to complete the electrolysis

CBSE Class 12 Chemistry - Metallurgy In Single Shot | Complete Revision - CBSE Board 2020