Choose the correct option: |
(i) Which part of the plant gets \[C{{O}_{2}}\] from air for photosynthesis? |
Choose the correct option: |
(ii) Animals are not: |
Choose the correct option: |
(iii) Silk is a: |
Choose the correct option: |
(iv) Convection may occur through: |
Choose the correct option: |
(v) Sodium hydroxide is: |
Choose the correct option: |
(vi) Which of the following is a chemical change? |
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(vii) The climate in polar region is: |
Choose the correct option: |
(viii) A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room? |
Choose the correct option: |
(ix) Which one doesn't cause erosion of soil? |
Choose the correct option: |
(x) Earthworms and frogs breathe through their skin because of which the skin of both the organisms is: |
Explain the following with examples: |
(i) Acidic oxides |
(ii) Basic oxides |
(iii) Amphoteric oxides |
(iv) Neutral oxides |
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