Advertisements
Advertisements
प्रश्न
State your observation When moist starch iodide paper is introduced into chlorine gas.
Advertisements
उत्तर
When moist starch iodide paper is introduced into chlorine gas, chlorine oxidizes iodide to iodine, which shows up as blue when complexed with starch.
APPEARS IN
संबंधित प्रश्न
State your observation when dilute hydrochloric acid is added to a lead nitrate solution and the mixture is heated.
Explain why anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.
Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
Convert two soluble metallic nitrates to insoluble metallic chlorides using dil. HCl.
Name the following:
Five oxidizing agents that liberated chlorine from concentrated hydrochloric acid.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
Write a fully balanced of the following case :
Red lead is warmed with concentrated hydrochloric acid.
Select from the list given (a to e) one substances in each case which matches the description given in parts (i) to (v). (Note : Each substance is used only one in the answer)
(a) Nitroso Iron (II) Sulphate
(b) Iron (III) chloride
(c) Chromium sulphate
(d) Lead (II) chloride
(e) Sodium chloride
(i) A compound which is deliquescent
(ii) A compound which is insoluble in cold water, but soluble in hot water
(iii) The compound responsible for the brown ring during the brown ring test of nitrate iron
(iv) A compound whose aqueous solution is neutral in nature
(v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution
Identify the salts P and Q from the observation given below:
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky. When NH4OH soltion is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Iron (II) sulphide
