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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v):

 

Vedanshi and Krati are working in the lab. During the experiment of determining the reactivity of acids and bases, the test tube containing chemical ‘X’ cracked and the liquid inside produced blisters on the skin of Krati. The pH strip turned blue to red with the reaction to the liquid. Vedanshi immediately called her teacher for help, and first aid was provided to Krati.

 

(v) What does the following activity represent
1 Production of HCl  
2 Production of H2SO4  
3 Production of CO2  
4 Reaction of calcium chloride with sulphuric acid  

Ans.

(1)