From the list - Ammonia, Copper oxide ,Copper sulphate , Hydrogen chloride , Hydrogen sulphide , Lead bromide - select the compound which can be oxidied to chlorine .

Select from the list - Ammonia , Copper oxide ,Copper sulphate ,Hydrogen chloride,Hydrogen sulphide , Lead bromide :The compound which is not a metal hydroxide but its aqueous solution is alkaline in nature .

Select from the given below (A to F), the one substance in each case which matches the descriptions given in parts (i) to (vi). Copy and complete the given grid with your answers as shown for part (i). (A) Ammonia (B) Copper oxide (C) Copper sulphate (D) Hydrogen chloride (E) Hydrogen sulphide (F) Lead bromide (i) Although this compound is not a metal hydroxide, its aqueous solution is alkaline in nature. (ii) A solution of this compound is used as the electrolyte when copper is purified. (iii) When this compound is electrolysed in the molten state, lead is obtained at the cathode. (iv) This compound can be oxidized to chlorine. (v) This compound smells of rotten eggs. (vi) This compound can be reduced to copper when heated with coke.

From the list of the gases - Ammonia ethane,hydrogen chloride hydrogen sulphide,ethyne- Select the gas which is used as a reducing agent in reducing copper oxide to copper.

Select from the list the gas that matches the description given in the following case : (ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne) This gas is used as a reducing agent in reducing copper oxide to copper.

From the gases - ammonia , chlorine , hydrogen chloride , sulphur dioxide , select the gas that turns moist red litmus paper blue . Write the equation for the reaction - when the gas is passed over heated CuO .

Which metal can deposit copper from copper sulphate solution ?

Give reason - Hydrogen chloride can be termed as a polar covalent compound.

The following materials are provided - solutions of cobalt chloride, ammonia, potassium permanganate, lime water, starch-iodide, sodium hydroxide, lead acetate, potassium iodide. Also provided are litmus and filter papers, glowing splinters and glass rods. Using the above how would you distinguish between: a] a neutral, acidic and a basic gas b] oxygen and hydrogen gas. c] carbon dioxide and sulphur dioxide gas d] chlorine and hydrogen chloride gas e) hydrogen sulphide and nitrogen dioxide gas f] ammonia and carbon dioxide gas g] zinc carbonate and potassium nitrate h] hydrated copper sulphate and anhydrous copper sulphate i] ammonium sulphate and sodium sulphate.

Select from the list the gas that matches the description given in each case: [ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne] This gas when treated with potassium permanganate changes its colour from pink to yellow