WhatsApp Channel Join Now Telegram Group Join Now Class 10 Science Chemical Reactions and Equations online quiz Welcome to your Class 10 Science Chemical Reactions and Equations online quiz The reaction in which a black coat forms on silver articles is Corrosion Endothemic Exothermic All of these None The gas used to preserve chips in packets is H₂ N₂ O₂ CO₂ None Formula for Propane is CH₃ C₃H₈ CO₂ Ag None N₂ + O₂ → 2NO. This is an example for ________ reaction Exothermic Endothermic Neutralisation None None The substances which undergo chemical change are called Reactants Products Elements Solutions None _____ is added to oils to prevent Oxydation N₂ Salts AntiOxidants None of these None The substance responsible for green coat on articles made of Copper is CuS CuCl₂ CuSO₄ CuO None Identify a temporary change Burning of coal Milk turns into curd Digestion of food Melting of Ice None CuO + H₂ → Cu + H₂O. This is an example for Reduction Oxydation Chemical combination Photo chemical None _____ vitamin is added to preserve food B C D A None Atomic number of Carbon is 3 5 6 2 None Stainless steel is an alloy of C, Ni, Cr Ni, C Cr, Fe C, Fe None Firing of crackers is an example of _______ Oxydation electrolysis Reduction None of these None Which element is non - corrosive? Cu Fe Au Al None The process of coating iron articles with Zinc is Oxydation Smelting Galvanization Chemicalisation None Ca CO₃ → CaO + CO₂ is an example for Chemical displacement Chemical Combination Chemical Decomposition Chemical Double decomposition None Photosynthesis is an example for Oxydation Reduction Photo Chemical reaction Oxydation & Reduction None 1 gram molar volume of any gas contains _________ no of molecules 3.01 X 10²² 3.01 X 10¹¹ 6. 02 X 10²³ 6. 02 X 10²² None The chemical reaction involved in addition of yeast to wet paste of rice is Reduction Chemical change Oxydation galvanization None The brown coloured gas evolved on heating of Lead Nitrate is ______ CO₂ NO₂ Pb O₂ None Please fill in the comment box below. Time's up
