NSO Level 1- Science Olympiad (SOF) Class 8: Questions 626 - 631 of 1076
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Question number: 626
Question
A substance which puts out fire is called a
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Non-combustible substances |
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| b. | Extinguisher |
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| c. | Combustible substances |
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| d. | Inflammable substances |
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Question number: 627
Question
Food can be considered as a fuel. The facts supporting this statement are
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | A substance that reacts with oxygen to give out energy is called a fuel |
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| b. | Food reacts with oxygen to give out energy |
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| c. | Both a. and b. are correct |
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| d. | Question does not provide sufficient data or is vague |
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Question number: 628
Question
When a person’s dress catches fire, the best way to extinguish fire is to
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Spray carbon dioxide gas on him |
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| b. | Spray water on him |
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| c. | Cover the person with a thick blanket |
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| d. | Cover the person with a plastic sheet |
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Question number: 629
Question
Find the odd one out from the given animals.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Bat |
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| b. | Kiwi |
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| c. | Penguin |
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| d. | Ostrich |
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Question number: 630
Question
Ovoviviparous are animals which produce fully developed eggs but the eggs hatch within the female’s body. In this animal the eggs hatch within the male’s body and the male give birth to young ones. Identify the animal.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Sea urchin |
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| b. | Viper |
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| c. | Sea horse |
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| d. | Bat |
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Question number: 631
Question
The inner surface of iron kadai and frying pan are coated with zinc. The reason is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Iron reacts with air and moisture to form rust |
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| b. | Zinc acts as a protective cover to prevent the contact between iron and atmosphere |
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| c. | Zinc reacts with oxygen to form zinc oxide. |
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| d. | Both a. and b. are correct |
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