{"id":84975,"date":"2025-06-01T02:58:41","date_gmt":"2025-06-01T02:58:41","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84975"},"modified":"2025-06-01T02:58:41","modified_gmt":"2025-06-01T02:58:41","slug":"which-one-of-the-following-chemical-reactions-is-not-feasible","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-chemical-reactions-is-not-feasible\/","title":{"rendered":"Which one of the following chemical reactions is not feasible?"},"content":{"rendered":"

Which one of the following chemical reactions is not<\/b> feasible?<\/p>\n

[amp_mcq option1=”Fe + CuSO\u2084 \u2192 FeSO\u2084 + Cu” option2=”Zn + CuSO\u2084 \u2192 ZnSO\u2084 + Cu” option3=”Cu + PbCl\u2082 \u2192 CuCl\u2082 + Pb” option4=”Mg + CuSO\u2084 \u2192 MgSO\u2084 + Cu” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-1 – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nA chemical reaction where a metal displaces another metal from its salt solution is feasible only if the displacing metal is more reactive than the metal being displaced. The reactivity series of metals dictates this.
\n<\/section>\n
\nComparing the reactivity of the metals involved: Magnesium (Mg) > Zinc (Zn) > Iron (Fe) > Lead (Pb) > Copper (Cu).
\n– A) Fe + CuSO\u2084: Fe is more reactive than Cu. Fe displaces Cu. Feasible.
\n– B) Zn + CuSO\u2084: Zn is more reactive than Cu. Zn displaces Cu. Feasible.
\n– C) Cu + PbCl\u2082: Cu is less reactive than Pb. Cu cannot displace Pb. Not feasible.
\n– D) Mg + CuSO\u2084: Mg is more reactive than Cu. Mg displaces Cu. Feasible.
\n<\/section>\n
\nThe reactivity series is determined experimentally and shows the relative tendency of metals to lose electrons and form positive ions. More reactive metals are higher in the series.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following chemical reactions is not feasible? [amp_mcq option1=”Fe + CuSO\u2084 \u2192 FeSO\u2084 + Cu” option2=”Zn + CuSO\u2084 \u2192 ZnSO\u2084 + Cu” option3=”Cu + PbCl\u2082 \u2192 CuCl\u2082 + Pb” option4=”Mg + CuSO\u2084 \u2192 MgSO\u2084 + Cu” correct=”option3″] This question was previously asked in UPSC CDS-1 – 2020 Download PDFAttempt Online A chemical … <\/p>\n

Detailed SolutionWhich one of the following chemical reactions is not feasible?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1087],"tags":[1288,1096,1109],"class_list":["post-84975","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1288","tag-chemistry","tag-metals-minerals-ores-properties-uses","no-featured-image-padding"],"yoast_head":"\nWhich one of the following chemical reactions is not feasible?<\/title>\n<meta name=\"description\" content=\"A chemical reaction where a metal displaces another metal from its salt solution is feasible only if the displacing metal is more reactive than the metal being displaced. The reactivity series of metals dictates this. Comparing the reactivity of the metals involved: Magnesium (Mg) > Zinc (Zn) > Iron (Fe) > Lead (Pb) > Copper (Cu). - A) Fe + CuSO\u2084: Fe is more reactive than Cu. Fe displaces Cu. Feasible. - B) Zn + CuSO\u2084: Zn is more reactive than Cu. Zn displaces Cu. Feasible. - C) Cu + PbCl\u2082: Cu is less reactive than Pb. Cu cannot displace Pb. Not feasible. - D) Mg + CuSO\u2084: Mg is more reactive than Cu. Mg displaces Cu. Feasible.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-chemical-reactions-is-not-feasible\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following chemical reactions is not feasible?\" \/>\n<meta property=\"og:description\" content=\"A chemical reaction where a metal displaces another metal from its salt solution is feasible only if the displacing metal is more reactive than the metal being displaced. The reactivity series of metals dictates this. Comparing the reactivity of the metals involved: Magnesium (Mg) > Zinc (Zn) > Iron (Fe) > Lead (Pb) > Copper (Cu). - A) Fe + CuSO\u2084: Fe is more reactive than Cu. Fe displaces Cu. Feasible. - B) Zn + CuSO\u2084: Zn is more reactive than Cu. Zn displaces Cu. Feasible. - C) Cu + PbCl\u2082: Cu is less reactive than Pb. Cu cannot displace Pb. Not feasible. - D) Mg + CuSO\u2084: Mg is more reactive than Cu. Mg displaces Cu. 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The reactivity series of metals dictates this. Comparing the reactivity of the metals involved: Magnesium (Mg) > Zinc (Zn) > Iron (Fe) > Lead (Pb) > Copper (Cu). - A) Fe + CuSO\u2084: Fe is more reactive than Cu. Fe displaces Cu. Feasible. - B) Zn + CuSO\u2084: Zn is more reactive than Cu. Zn displaces Cu. Feasible. - C) Cu + PbCl\u2082: Cu is less reactive than Pb. Cu cannot displace Pb. Not feasible. - D) Mg + CuSO\u2084: Mg is more reactive than Cu. Mg displaces Cu. 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