Question 11 MarkIdentify the following substance:A brown gas D with the irritating smell.AnswerNitrogen dioxide.View full question & answer→
Question 21 MarkIdentify the following substance:Gas C that is colourless and can be used as a bleaching agent.AnswerSulphur dioxideView full question & answer→
Question 31 MarkIdentify the following substance:Gas B that has an offensive smell as of rotten eggs.AnswerHydrogen sulphideView full question & answer→
Question 41 MarkIdentify the following substance:An alkaline gas A which gives dense white fumes with hydrogen chloride.AnswerAmmonia gasView full question & answer→
Question 51 MarkHow will you distinguish sodium chloride, potassium chloride, and calcium chloride?AnswerThe flame test should be performed to distinguish. NaCl will give Yellow Flame, KCl will give violet flame and$ CaCl_2$ will give Brick red flame.View full question & answer→
Question 61 MarkState the original colour of the following substance and colour of residue obtained after heating.Zinc carbonateAnswerZinc carbonate is a white coloured solid. Hence, the colour of the residue obtained by heating Zinc carbonate is yellow.View full question & answer→
Question 71 MarkState the original colour of the following substance and colour of residue obtained after heating.Copper carbonateAnswerThe colour of copper carbonate is green.On heating Copper carbonate, a black residue is formed and a gas is released which turns lime water milkyView full question & answer→
Question 81 MarkState the original colour of the following substance and colour of residue obtained after heating.Ammonium dichromateAnswerAmmonium dichromate is a bright orange-red crystalline solid. It is readily ignited and burns to produce a voluminous green residue.View full question & answer→
Question 91 MarkName: Gas with rotten egg smell.AnswerHydrogen sulphide. $H_2S$View full question & answer→
Question 121 MarkName: Two nitrates that do not produce nitrogen dioxide on heating.AnswerSodium nitrate and potassium nitrate.View full question & answer→
Question 131 MarkName: Two carbonates do not produce carbon dioxide on heating.Answer$Na_2CO_3$ and $K_2CO_3$View full question & answer→
Question 141 MarkName Affects the acidified $K_2Cr_2O_7$ paper and also turns lime water dirty milky.Answer$SO_2$View full question & answer→
Question 151 MarkName the gas that: Does not affect acidified $K_2Cr_2O_7$ paper but turns lime water milky.AnswerCarbon dioxide.View full question & answer→
Question 161 MarkName the gases which Turn moist red litmus blue.Answer$NH_3$View full question & answer→
Question 171 MarkName the gas that.Turns moist starch iodide paper blue black.AnswerChlorine.View full question & answer→