{"id":10010,"date":"2024-07-06T10:22:33","date_gmt":"2024-07-06T09:22:33","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=10010"},"modified":"2024-07-17T11:54:47","modified_gmt":"2024-07-17T10:54:47","slug":"chemical-reactions-set-1","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2024\/07\/06\/chemical-reactions-set-1\/","title":{"rendered":"Chemical Reactions Set &#8211; 1"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>1. \u00a0Strong heating of ferrous sulphate leads to the formation of a brown solid and two This reaction can be categorised as _______.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. Displacemnt and redox<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B.  Decomposition and redox<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Displacement and endothermic<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong>Decomposition and exothermic<\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:B.Decomposition and redox <BR>\nSOLUTION : Therefore, Strong heating of ferrous sulphate leads to the formation of a brown solid and two gases. This reaction can be categorised as option (B) decomposition and redox.\/p>\n<\/div>egin\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand to ________.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong>Make the ribbon surface shinier<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. Remove the layer of magnesium oxide from the ribbon surface<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Remove the layer of magnesium carbonate from the ribbon surface<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Remove the moisture from the ribbon surface<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:A.Make the ribbon surface shinier<BR>\nSOLUTION:Magnesium ribbon is cleaned with a sand paper before burning to remove the layer of magnesium oxide. Magnesium, we know is a very reactive metal.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. A substance added to food containing fats and oils is called ____.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. \u00a0Oxidant<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. \u00a0Rancid<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Coolant<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D.  <strong>Antioxidant<\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER :D.Antioxidant<BR>\nSOLUTION:Antioxidants are added to foods containing fats\/oil.\n <\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. In a chemical reaction between sulphuric acid and barium chloride<br>solution the white precipitates formed are of ______<\/strong>.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong>Barium sulphate<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. Chlorine<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Sulphur<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. None of these<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: A.Barium sulphate<BR>\nSOLUTION: On reaction with the sulphuric acid solution, barium chloride forms a white precipitate of barium sulfate.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. \u00a0The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of _________<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong>Exothermic process<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. Endothermic process<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Reversible Process<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Physical Process<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: A.Exothermic process<BR>\nSOLUTION: \nIn respiration, glucose undergoes slow combustion by combining with oxygen to form carbon dioxide, water and energy. Apart from other functions, this energy maintains our body heat. Due to this production of energy, respiration is considered an exothermic process.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. \u00a0Which of the following gases\u00a0 is used in the storage of fat and oil containing foods for a long time?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. Carbon dioxide gas<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. \u00a0Oxygen gas<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong>Nitrogen gas<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Neon gas<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: C.Nitrogen gas<BR>\nSOLUTION: Thus, among the given options, Nitrogen gas (option second) is used in the storage of fat and oil-containing foods for a long time.\n\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7. Which of the following is not a physical change?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A.  Boiling of water to give water vapours<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. Melting of ice to give water<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Dissolution of salt in water<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong>Combustion of Liquefield Petroleum gas<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: D.Combustion of Liquefield Petroleum gas <BR>\nSOLUTION :\nHence, the correct option is D i.e. Combustion of Liquefied Petroleum Gas (LPG).\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>8. \u00a0 Which one of the following processes involve chemical reactions?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. Storing of oxygen gas under pressure in a gas cylinder<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>Liquefaction of air<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Keeping petrol in a china dish in the open<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong>Heating copper wire in presence of air at high temperature<\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: D.Heating copper wire in presence of air at high temperature<BR>\nSOLUTION:Hence, Heating copper wire in the presence of air at high temperature is a process that involves chemical reaction.\n\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>9. The Compound obtained on reactions of iron with steam is \/are _________.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong>FeO<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>Fe<sub>3<\/sub>O<sub>4<\/sub><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. FeO<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Fe<sub>2<\/sub>O<sub>3<\/sub><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: B.Fe3O4<BR>\nSOLUTION:Iron reacts with steam to form iron oxide and hydrogen gas. The reaction occurs as follows: 3Fe (s)+4H2O (g)\u2192Fe3O4(s)+4H2(g)\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>10. In which of the following the identity of initial substance remains unchanged?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. Curdling of milk<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>Formation of crystals by process of crystallisation<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Fermentation of grapes<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Digestion of food<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER: B.Formation of crystals by process of crystallisation<BR>\nSOLUTION:\nHence, among the following options, the identity of the initial substance remains unchanged in option(B) the Formation of crystals by process of crystallization.\n<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. \u00a0Strong heating of ferrous sulphate leads to the formation of a brown solid and two This reaction can be categorised as _______. A. Displacemnt and redox B. Decomposition and redox C. Displacement and endothermic D. Decomposition and exothermic ANSWER &#038; SOLUTION ANSWER:B.Decomposition and redox SOLUTION : Therefore, Strong heating of ferrous sulphate leads to<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,19],"tags":[5263,5261,5651,5653,5646,5264,5270,4029,5649,5652,5259,5269,5265,5266,5267,5268],"class_list":{"0":"post-10010","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-chemistry","7":"category-science","8":"tag-a-substance-added-to-food-containing-fats-and-oils-is-called-____-2","9":"tag-before-burning-in-air-the-magnesium-ribbon-is-cleaned-by-rubbing-with-a-sand-to-________","10":"tag-chemistry-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","11":"tag-chemistry-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-examsin-kannada","12":"tag-exam-veda","13":"tag-in-a-chemical-reaction-between-sulphuric-acid-and-barium-chloride-solution-the-white-precipitates-formed-are-of-______","14":"tag-in-which-of-the-following-the-identity-of-initial-substance-remains-unchanged","15":"tag-mcqs-adda","16":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","17":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-examsin-kannada","18":"tag-strong-heating-of-ferrous-sulphate-leads-to-the-formation-of-a-brown-solid-and-two-this-reaction-can-be-categorised-as-_______","19":"tag-the-compound-obtained-on-reactions-of-iron-with-steam-is-are-_________","20":"tag-the-respiration-process-during-which-glucose-undergoes-slow-combustion-by-combining-with-oxygen-in-the-cells-of-our-body-to-produce-energy-is-a-kind-of-_________","21":"tag-which-of-the-following-gases-is-used-in-the-storage-of-fat-and-oil-containing-foods-for-a-long-time","22":"tag-which-of-the-following-is-not-a-physical-change","23":"tag-which-one-of-the-following-processes-involve-chemical-reactions"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/10010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=10010"}],"version-history":[{"count":2,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/10010\/revisions"}],"predecessor-version":[{"id":10026,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/10010\/revisions\/10026"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=10010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=10010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=10010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}