Q 1 – Magnesium strip burns in air.
2Mg+O2→2MgO.
Q 2 – Zinc reacts with dilute sulfuric acid.
Q 3 – Iron reacts with steam.
3Fe (s)+4H2O (g)→Fe3O4(s)+4H2(g)
Q 4 – Carbon monoxide reacts with hydrogen gas under the pressure of 340 atm.
Q 5 – The reaction of photosynthesis.
Q 6 – Aqueous solution of Barium chloride is mixed with aqueous Solution of aluminum sulphate to give white ppt.
Q 7 – Aqueous solution of Barium chloride is mixed with aqueous Solution of Sodium sulphate to give white ppt.
Q 8 – Quick lime mixed with water.
Q 9 – The reaction Which leads to the formation of shiny layer after few days of applying white wash on the walls.
Q 10 – Burning of natural gas.
Q 11 – The reaction of respiration.
Q 12 – Thermal decomposition of ferrous sulphate crystals to give the smell of burning Sulphur.
Q 13 – Thermal decomposition of limestone/marble.
Q 14 – A White crystalline salt of lead is heated to give brown coloured gas along with a residue which is of yellow colour when cooled. Give the chemical equation after identifying the salt.
Q 15 – Electrolytic decomposition of water.
Q 16 – White Silver chloride turns to grey in sunlight.
Q 17 – Lead displace copper from Copper (II) Chloride.
Q 18 – Reaction between hydrochloric acid and manganese dioxide.
Q 19 – Reaction Between copper (II) oxide and hydrogen.
Q 20 – Reaction of aqueous solution of lead (II) nitrate with aqueous solution of Potassium iodide.
Q 21 – Corrosion of Iron.
Q 22 – Tarnishing of Silver
Q 23 – A greenish layer formed on copper.
Q 24 – Reaction of Zinc with sodium hydroxide.
Q 25 – Sodium Carbonate reacts with dilute hydrochloric acid to produce brisk effervescence.
Q 26 – Sodium bicarbonate reacts with dilute hydrochloric acid to produce brisk effervescence.
Q 27 – Reaction When Co2 is Passed through lime water.
Q 28 – Reaction When Co2 is Passed through lime water in excess.
Q 29 – Copper oxide reacts with dilute HCL to give blue – green solution.
Q 30 – Reaction of marble chips with dilute HCL.
Q 31 – Electrolysis of brine solution
Q 32 – Chlorine gas is passed through dry slaked lime.
Q 33 – Preparation of baking soda.
Q 34 – Baking Soda is strongly heated.
Q 35 – Reaction explaining the role of baking soda as an important constituent of baking powder and soda – acid fire extinguishers.
Q 36 – Three reactions for the preparation of washing soda.
Q 37 – Reaction showing the use of Washing soda to remove permanent hardness.
Q 38 – Rehydration of POP.
Q 39 – Preparation of plaster of Paris.
Q 40 – Reaction of aluminum oxide with HCL.
Q 41 – Reaction of aluminum oxide with NaOH.
Q 42 – Strongly heating cinnabar in the presence of air.
Q 43 – Reduction of copper from copper glance.
Q 43 – Reduction of copper from copper glance.
Q 44 – Calcination of Zinc Carbonate.
Q 45 – Reduction of ZnO using carbon.
Q 46 – Reduction MnO2 using aluminum.
Q 47 – Thermite reaction.
Q 48 – Reactions of Mg with hot water and steam.
Q 49 – Reactions of Al Zn and Fe with steam.
Q 50 – Reaction of Mn with very dilute HNO3.