Bissoy.com
Doctors Medicines MCQs Q&A

Which among the following statements is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to 1. the formation of silver by decomposition of silver chloride 2. sublimation of silver chloride 3. decomposition of chlorine gas from silver chloride 4. oxidation of silver chloride Select the correct answer using the codes given below.

Which among the following statements is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to 1. the formation of silver by decomposition of silver chloride 2. sublimation of silver chloride 3. decomposition of chlorine gas from silver chloride 4. oxidation of silver chloride Select the correct answer using the codes given below. Correct Answer Only 1

The correct answer is Only 1.

Important Points

  • White silver chloride turns grey in sunlight. 
  • This is due to the decomposition of silver chloride into silver and chlorine by light.
    • 2AgCl(s) (in presence of Sunlight) ---> 2Ag(s) + Cl2(g)
  • Silver bromide also behaves in the same way.
    • 2AgBr(s) Sunlight ---->  2Ag(s) + Br2(g) 
  • The above reactions are used in black and white photography.
  • The decomposition reactions require energy either in the form of heat, light or electricity for breaking down the reactants.
  • Reactions in which energy is absorbed are known as endothermic reactions.

Related Questions

In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.           Statements: Some grey are silk. All pinks are grey. Conclusions: I. Some silk are grey. II. Some grey are pink.
In the following question below are given three statements followed by three conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some Mobile are Laptop. II. All Laptop are Grey. III. No Grey is a Blue. Conclusions: I. Some Mobile are Grey. II. Some Blue are Mobile. III. No Laptop is a Blue.
Duration along the critical path defines which of the following? A. Shortest duration needed B. Shortest duration permissible C. Longest duration needed D. Longest duration permissible Select the code for the correct answer from the options given below: 
Which of the following statements are true?  a) Transaction exposure is inherent in all foreign currencies denominated contractual transactions  b) Translation exposure relates to the change in accounting income and balance sheet statements caused by change in exchange rate  c) Economic exposure has an impact on the valuation of a firm  d) Operating exposure does not have any impact on the firm's future operating revenues or future operating costs  Choose the correct option from those below: 
Consider the following statements regarding Styrene gas leakage from LG Polymers Plant in Vishakhapatnam, Andhra Pradesh: 1. Styrene gas that is used in the production of polystyrene plastics and resins is normally stored as liquid in factories. 2. Short exposure to Styrene gas results in irritation of mucous membrane and eye, gastrointestinal effects and inhalation problems and long term exposure to the gas causes damage to central nervous system and fatality as well. Which of the statements given above is/are correct?
Garima starts walking towards the south from point R. He walks for 5m to reach Point S then turns right and walks for 2m to reach point T from there he turns left and walks for 3m to reach Point Z. He then turns right from point Z and walks for 6m to reach point Y and then turns right and walks for 3m to reach point X. He then turns right from point X and walks for 4m to reach point W and then turns left and walks for 5m to reach point V and then turns left and walks for 4m till point U and stops. What is the shortest distance between point V and point R?
Two boysM and N start from the same point. M walks 5 km south, then turns to his left and walks 6 km, then turns to his right and walks 5 km, and then again turns to his right and walks 6 km. At the same time, N walks 5 km north, then turns to his left and walks 6 km, then turns to his left and walks 10 km, and then again turns to his left and walks 3 km and then turns to his right and walks 5 km.What is the position of N with respect to M?
A hare pursued by a grey hound is 50 of her own leaps before him. while the hare takes 4 leaps, the grey hound takes 3 leaps. In one leap, the hare goes 1.75 metres and the grey hound 2.75 metres. In how many leaps, will the grey hound overtake the hare?
Which of the following statements is correct regarding the oxidation number of Oxygen? I. The oxidation number of Oxygen in most compounds is -2. II. When Oxygen is bonded to Fluorine in compounds like Oxygen difluoride and Dioxygen diflouride, the Oxygen is assigned an oxidation number of +2 and +2 respectively. III. In peroxide, an Oxygen atom is assigned an oxidation number of -1 and in Superoxide, each oxygen atom is assigned an oxidation number of -1/2.
India's first gas exchange, the Indian Gas Exchange (IGX), was launched as a wholly owned subsidiary of Indian Energy Exchange. Which of the following statements are correct? 1. It is a digital trading platform that will allow buyers and sellers to trade both in the spot market and in the forward market for imported natural gas. 2. It will allow trade across three hubs - Dahej and Hazira in Gujarat and Kakinada in Andhra Pradesh. 3. Imported Liquified Natural Gas (LNG) will be regassified and sold to buyers through the exchange, removing the requirement for buyers and sellers to find each other. 4. Only inter-governmental trade in domestically produced natural gas is allowed at the gas exchange. Select the correct answer using the code given below: