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- Take 5mL of hydrogen peroxide ('H2O2') solution in a test tube. Add a ...
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- …....is inevitable for growth and sustenance of living organisms.
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- Find the relation and fill them suitably: Oxygen: for respiration ...
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- What is the colour of nitrogen gas?
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- The chief ingredients of chemical fertilisers are................
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- …............is used for the production of electricity by the reaction...
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- The gas liberated when manganese dioxide heated with concentrated hydr...
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- The condition needed in bleaching action of chlorine.
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- The gas obtained when zinc react with water is….......
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- The gas obtained when chlorine react with water is …............
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- The reactants used to produce chlorine in the laboratory are …...........
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- ….............is the protective covering of the earth.
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- Ozone is mainly found in the …...........
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- The bacteria called …................living in the roots of some plant...
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- The element found more on earth.
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- The density of hydrogen is …...........than air
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- A gas was formed when zinc reacted with dilute hydrochloric acid. a...
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- Find the odd one and give reason: a) Compost, Ammonia, Urea, Factump...
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- A burning candle kept on the table is covered with a glass tumbler. ...
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- a) Write a method of preparation of hydrogen in laboratory. b) How w...
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