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Mention any two information conveyed by a balanced chemical equation.
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What are the points to be followed while balancing a chemical equation?
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What information is not conveyed by a balanced chemical equation?
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______ is commonly known as the Pusa Institute.
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The first KVK was established in 1974 at ______.
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What is foliar spray?
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Write any two preventive measures for global warming.
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Write the preventive measures to control the effect of global warming.
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Vermiwash is used as a ______ for crops.
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______ can be used for seed treatment.
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What is Panchgavya?
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State the law of conservation of mass.
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Match the following.
| Law of conservation of mass | Sir William Crookes |
| Law of constant proportion | James Chadwick |
| Cathode rays | Joseph Proust |
| Anode rays | Lavoisier |
| Neutrons | Goldstein |
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Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?
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Name the four laws of chemical combinations.
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______ source of bio-fertilizers.
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Match the following:
| 1. | Nostoc | a. | Pest |
| 2. | Bacillus | b. | Cyanobacteria |
| 3. | Cotton bollworm | c. | Legume |
| 4. | Rhizobium | d. |
Bio-pesticide |
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What is bio-control?
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What are bio-pesticides?
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What are the effects of acid rain? How can we prevent them?
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