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Question 5.1: Write any two characteristics of Chemisorption. Answer: 1. Chemisorption is highly specific in nature. It occurs only if there is a possibility of chemical bonding between the adsorbent and the adsorbate. 2. Like physisorption, chemisorption also increases with an increase in the surface area of the adsorbent. Question 5.2: Why does physisorption decrease with the […]

Question 4.1: For the reaction R → P, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 minutes. Calculate the average rate of reaction using units of time both in minutes and seconds. Answer: Average rate of reaction  = 6.67 × 10−6 M s−1 Question 4.2: In a reaction, 2A →

Question 3.1: How would you determine the standard electrode potential of the systemMg2+ | Mg? Answer: The standard electrode potential of Mg2+ | Mg can be measured with respect to the standard hydrogen electrode, represented by Pt(s), H2(g) (1 atm) | H+(aq)(1 M). A cell, consisting of Mg | MgSO4 (aq 1 M) as the anode and the standard hydrogen

Page No 37: Question 2.1: Calculate the mass percentage of benzene (C6H6) and carbon tetrachloride (CCl4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride. Answer: Mass percentage of C6H6  Mass percentage of CCl4 Alternatively, Mass percentage of CCl4 = (100 − 15.28)% = 84.72% Question 2.2: Calculate the mole fraction of

Question 1.1: Why are solids rigid? Answer: The intermolecular forces of attraction that are present in solids are very strong. The constituent particles of solids cannot move from their positions i.e., they have fixed positions. However, they can oscillate about their mean positions. This is the reason solids are rigid. Question 1.2: Why do solids

मानव संसाधन विकास मंत्रालय ने ‘भारत पढ़े ऑनलाइन’ शीर्षक अभियान शुरू किया है। ये अभियान क्राउड सोर्सिंग ऑफ आइडियाज के जरिए देश के ऑनलाइन शिक्षा पारिस्थितिकी तंत्र में सुधार के लिए शुरू किया गया है। मानव संसाधन विकास मंत्रालय ने इस अभियान का प्रचार गूगल एड और यूट्यूब एड के द्वारा भी करने का निर्णय

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