Two interactive CD-ROMs accompany the book, incorporating electronic questions that facilitate revision/consolidation. This book is part of The Molecular World series which aims to provide a broad foundation in chemistry. Based on Sanskrit mathematical aphorisms found in the Atharvaveda. Found inside – Page 72[NCERT] Ans. The solution used was aqua regia which consists of 3 parts of ... Give reasons for the following: [CBSE 2008] (a) Zinc can displace copper from ... Found inside – Page 63O → 2NaOH + H 2 ↑ Ans. Goldsmith must have dipped the gold metal in the solution of aqua regia − a 3 : 1 mixture of concentrated HCl and concentrated ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 11(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 63O → 2NaOH + H 2 ↑ Ans. Goldsmith must have dipped the gold metal in the solution of aqua regia − a 3 : 1 mixture of concentrated HCl and concentrated ... Found inside – Page 406Aqua-regia: Mixture of nitric acid and hydrochloric acid in ratio of 1:3. ... [CBSE Outside Delhi, 2012] BiH on moving 3, because from the SbH stability 3 ... 100's of Q's with answer Chapterwise Practice Q's Revision Q's Sample Paper New! updated questions Workbook must for schools student preparing for National Interactive Science Olympiad(NISO) conducted by EHF Eduheal Foundation and other ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 37(a) Brass (b) Bronze (c) Amalgam (d) Steel [NCERT Exemp.] ... (i) Hydrochloric acid (ii) Sulphuric acid (iii) Nitric acid (iv) Aqua regia (b) The composition ... Found inside – Page 11(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 63O → 2NaOH + H 2 ↑ Ans. Goldsmith must have dipped the gold metal in the solution of aqua regia − a 3 : 1 mixture of concentrated HCl and concentrated ... Found inside – Page 15(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 11(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 15(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 106NH2 ] I + 7KI + 2H2O > Nitric Acid ( HNO3 ) : Preparation : In laboratory : NaNO3 + H2SO4 NaHSO4 + HNO3 ( conc . ) ( Brown ppt . ) ... Found inside – Page 63O → 2NaOH + H 2 ↑ Ans. Goldsmith must have dipped the gold metal in the solution of aqua regia − a 3 : 1 mixture of concentrated HCl and concentrated ... Found inside – Page 29HNO3 3 : 1 [CBSE 2020] Ans. (c) Explanation: Aqua-regia is the mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio of 3:1. Found inside – Page 106NH2 ] I + 7KI + 2H2O > Nitric Acid ( HNO3 ) : Preparation : In laboratory : NaNO3 + H2SO4 NaHSO4 + HNO3 ( conc . ) ( Brown ppt . ) ... Found inside – Page 103Ans. The dishonest goldsmith dipped the gold bangles in aquaregia solution (which contains 1 part of concentrated nitric acid and 3 parts of concentrated ... This book will prove useful to chemists, researchers, and students. Found inside – Page P-33Which of the following is used for dissolution of gold? (a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp.] (1) Ans. . Found inside – Page 37(a) Brass (b) Bronze (c) Amalgam (d) Steel [NCERT Exemp.] ... (i) Hydrochloric acid (ii) Sulphuric acid (iii) Nitric acid (iv) Aqua regia (b) The composition ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 37(a) Brass (b) Bronze (c) Amalgam (d) Steel [NCERT Exemp.] ... (i) Hydrochloric acid (ii) Sulphuric acid (iii) Nitric acid (iv) Aqua regia (b) The composition ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside1 INTRODUCTION. 2 SOURCERS OF CHLORINE AND HYDROGEN CHLORIDE. 3 CONSUMPTION OF CHLORINE AND HYDROGEN CHLORIDE. 4 ATMOSPHERIC CHEMISTRY OF CHLORINE COMPOUNDS. 5 EFFECTS OF CHLORINE AND HYDROGEN CHLORIDE ON MAN AND ANIMALS. 6 EFFECTS OF ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 79[NCERT] Ans. The man must have dipped the gold metal in the solution of aqua regia - a 3 : 1 mixture of conc. HCl and conc. HNO3 . Aqua regia is a fuming, ... Found inside – Page 15(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 15(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page 63O → 2NaOH + H 2 ↑ Ans. Goldsmith must have dipped the gold metal in the solution of aqua regia − a 3 : 1 mixture of concentrated HCl and concentrated ... Found inside – Page 17(C.B.S.E 7 N.C.E.R.T) CLASS 10 Er. SAJAL KUMAR GHOSH ... 2) Aqua regia is related to a) A mixture of two soft acids. b) A mixture of two soft bases. c) A ... Found inside – Page 93Ans. The goldsmith dipped the set of the gold bangles in aqua regia solution. Aqua regia is a freshly prepared mixture of 1 part of conc. Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 11(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp. Q. 21, Page 12] Ans. Correct option : (d) Explanation : Aqua Regia is ... Found inside – Page P-37HCl : Dil. HNO3 3 : 1 (c) Why the weight of the bangle was reduced drastically? (1) (d) Aqua regia is a strong oxidizing agent. (True or False) (1) Ans. . Found insideAfter dipping the gold ornaments in aqua regia, the outer layer of gold gets dissolved and the inner shiny ... CBSE. Class. 10th. NCERT. Solution: Science. Found inside – Page 10(a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia [NCERT Exemp.] Q. 6. Which of the following is not a mineral acid? Found inside – Page 15Q. 19, Page 12] Ans. Correct option: (a) Explanation : Lime juice is acidic in nature as the juice is ... (b) Sulphuric acid (d) Aqua regia [NCERT Exemp. Found inside – Page 44Aqua Regia Regia is is a mixture of conc. HCl and conc. a strong oxidizing agent due to the formation HNO3 in of the NOCl ratio of ... Found inside – Page 282[NCERT Exemplar] (a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid (d) Aqua regia 22. During the preparation of hydrogen chloride gas on a humid day, ... Found inside – Page 223... तो aqua - regia ( 37 - e27G , i . e . king of acids ) form aan , il noble metals ( e . g . gold , platinum ) il dissolve cost Ho fare use Etat Au + 4H ... Found inside – Page 37(c) As the gold from the bangles was dissolved in aquaregia, their weight was reduced drastically. (d) True. Aqua Regia is a strong oxidizing agent due to ... Found inside – Page 44AQUA-REGIA. • It is a mixture of concentrated hydrochloric acid (HCl) ratio and concentrated of 3:1. It is used to nitric dissolve acid noble (HNO metals 3 ) ... Found inside – Page 103Ans. 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