| | - Teacher Name : Rakesh
- Total Questions : 20
- Time Allowed : 60
- Total Marks : 20
Q 1 :In a chemical reaction between sulphuric acid and barium chloride solutions, the white precipitate formed is of Q 2 :Which one of the following processes does not involve a chemical reaction? Q 3 :Rusting of iron involves a chemical reaction which is a combination of Q 4 :Which of the following is quick lime? Q 5 :When ferrous sulphate is heated strongly, it undergoes decomposition to form ferric oxide as the main product accompanied by a change in colour from Q 6 :Fe2O+2AI --AI2O + 2Fe The above reaction is a type of Q 7 :The reaction between an acid and a base is a type of Q 8 :The process of respiration during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of Q 9 :Decomposition reactions are mostly Q 10 :Which of the following gases is used in the storage of fat and oil containing food items for a long time? Q 11 :The chemical formula of lead sulphate is Q 12 :Which of the following is a displacement reaction? Q 13 :Fatthy foods become rancid due to the process of Q 14 :The ration by volume in which hydrogen and oxygen are present in water is Q 15 :In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in its place? Q 16 :The gases obtained on heating the anhydrous FeSO4 strongly are Q 17 :Rancidity can be prevented by Q 18 :The colour of copper metal is Q 19 :2AgI (s) --sunlight----- 2Ag( s) + I2 (g) The colour of iodine formed in above reaction is Q 20 :Silver article turns black when kept in open for a few days due to the formation of which of the following compounds?
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