Chemistry 2 Important 7 marks Questions 100% Pass


Unit-1

1. i)What are the industrial applications of electrolysis. 

 ii)What is a secondary battery? Explain the working principle of lead acid battery.

2.I)Explain the cel reactions in Daniel cell. 

Ii).What is Faraday's second law of electrolysis? During electrolysis of silver nitrate, 4.029g of silver was found to get deposited over the cathode. How much time is required 

to get the deposition when 1 ampere current is passed? (equivalent weight of silver is 108) 

3.Solar cell


Unit-2

1.1.i)Explain differential aeration theory of corrosion with suitable example.

ii) Distinguish between paint and varnish. Explain the preparation of oil and sprit varnish. 

2.i)Write notes on cathodic protection. 

ii) What are the types of corrosion. factors that influence the rate of corrosion

3.Anodizing


Unit-3 

1.i)Refining of petroleum 

Ii) Flue gas analysis using orsat apparatus 

2.I)What are the characteristics of rocket propellants. 

 ii) A coal sample contains 80%C, 8B%H, 1%S and 3% agp, by mass. Find the amount of air required to burn 1 kg oy coal. ; 

3.Fractional distillation of petroleum 


Unit-4 

1.i) Write notes on rain water harvesting. 

 ii) When 250m! of sample of hard water is titrated against standard EDTA of strength 0.01M, it consumed 12.5 mi. - The same sample after boiling required only 8.5m! of the same EDTA. Calculate the carbonate and non carbonate hardness of the sample in mg/L. 

2 i) Explain ion exchange process of removing hardness. 

 ii) Write a note on dissolved chlorine. 

3.Reverse osmosis method 


Unit-5

1.i) What are the harmful effects of global warming? 

 ii) What is meant by depletion of ozone layer? Mention their harmful effects. 

2 i) Explain land fill operation and recycling of solid waste management. 

il) Mention the harmful effects of sewage and ways to treat 

3. Main water pollution . Harmful effect .