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(i) Two objects repel each other. This repulsion could be due to |
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(ii) If we apply oil on door hinges/ the friction will: |
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(iii) The loudness of sound depends on: |
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(iv) Which of the following metals is used in electroplating to make objects appear shining? |
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(v) An electroscope is a device which is used to find an object is |
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(vi) Part of the eye which controls the light entering is called: |
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(vii) Ursa Major is not known as: |
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(viii) Process of separating grain seeds from the chaff is called |
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(ix) Viruses reproduce only inside the cells of: |
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(x) Which is a thermosetting plastic? |
Give reason: |
Iron nails are placed in copper sulphate solution. Write word equation of the reaction involved. |
Give reason: |
(i) LPG is a better domestic fuel than wood. |
(ii) Differentiate between Flora and Fauna. |
Observe the following diagram: |
Answer the following questions: |
(i) Does it represent a plant cell or an animal cell? |
(ii) Does it represent a prokaryotic cell or an eukaryotic cell? |
Give reason: |
Powder is sprinkled on the carrom board before playing. |
In the circuit as given in Fig., Boojho observed that copper is deposited on the electrode connected to the negative terminal of the battery. Paheli tried to repeat the same experiment but she could find only one copper plate. Therefore, she took a carbon rod as negative electrode. Will copper be still deposited on the carbon rod? |
Explain your answer. |
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