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Class 8 Exam  >  Class 8 Questions  >  WHEN WAS ROWLATT ACT CAME INTO EFFECT? Start Learning for Free
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WHEN WAS ROWLATT ACT CAME INTO EFFECT?
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WHEN WAS ROWLATT ACT CAME INTO EFFECT?
Its 21st march 1919
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WHEN WAS ROWLATT ACT CAME INTO EFFECT?
The Rowlatt Act came into effect on 21 March 1919.
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NCERT TEXTBOOK QUESTIONS SOLVED Q. 1. What are the different ways in which water gets contaminated?Ans. Water gets contaminated in the following ways:(i) Many industries discharge harmful chemicals to rivers and streams.(ii) Water gets contaminated when sewage is disposed off in rivers.(iii) Pesticides, weedicides and other chemicals also dissolve in water and get contaminated.(iv) Breeding of microorganisms makes water polluted. Q. 2. At an individual level, how can you help reduce air pollution?Ans. By this process we can reduce air pollution:(i) We should plant trees to reduce the level of carbon dioxide and air pollution.(ii) By using CNG and unleaded petrol in our vehicle.(iii) By using public transport as far as possible.(iv) By giving general awareness about air pollution to our family and friends. Q . 3. Clear, transparent water is always fit for drinking. Comment.Ans. Clear, transparent water is always fit for drinking. This is not true, because many microorganisms are present in it. So we should clean it by boiling. Q. 4. You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.Ans. A list of measures that would help our town to ensure the supply of clean water to all its residents–(i) Proper cleaning of water tank.(ii) Chlorine tablets should be made available.(iii) To get clean water in every household, it is necessary that water reaching the houses should be treated. Q. 5. Explain the differences between pure air and polluted air.Ans. Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles.Polluted air contains harmful gases and unwanted substances. Q. 6. Explain circumstances leading to acid rain. How does acid rain affect us?Ans. Some pollutants like sulphur dioxide and nitrogen dioxide react with the water vapour present in the atmosphere to form sulphuric acid and nitric acid. The acid drops down with rain, making the rain acidic. This is called acid rain. Acid rain affects us in many ways.(i) Acid rain corrodes the marble of the monument.(ii) Acid rain damages building and sculptural materials.(iii) Acid rain damages fresh water also.(iv) Acid rain also damages our crops and makes it poisonous.(v) Acid rain damages the leaves of plants. Q. 7. Which of the following is not a greenhouse gas?(

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WHEN WAS ROWLATT ACT CAME INTO EFFECT?
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WHEN WAS ROWLATT ACT CAME INTO EFFECT? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about WHEN WAS ROWLATT ACT CAME INTO EFFECT? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for WHEN WAS ROWLATT ACT CAME INTO EFFECT?.
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