NSO Level 1- Science Olympiad (SOF) Class 10: Questions 489 - 495 of 986
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Question number: 489
» Human Eye and Colourful World
Question
To enable observer to see a rainbow the sun should be positioned
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | behind observer |
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| b. | on observer left side |
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| c. | on observer right side |
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| d. | in front of observer |
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Question number: 490
Question
A cell union called
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Gap junction |
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| b. | Synapse |
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| c. | Tight junction |
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| d. | Interneural bridge |
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Question number: 491
» Human Eye and Colourful World
Question
Which of the following is not a neutral color?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Black |
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| b. | Purple |
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| c. | Brown |
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| d. | White |
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Question number: 492
Question
Factors affecting transpiration rate are
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Wind |
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| b. | Temperature |
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| c. | Atmospheric humidity |
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| d. | All a. , b. and c. are correct |
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Question number: 493
Question
Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Thick wire |
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| b. | Any wire |
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| c. | Same flow on both wires |
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| d. | Thin wire |
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Question number: 494
Question
The current will an electrical bulb draw from a 220 V source, if the resistance of the bulb filament is . The current is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. |
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| c. |
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| d. | None of the above |
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Question number: 495
» Human Eye and Colourful World
Question
Which of the following is correct for infrared ray detected by human eye?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Infrared rays are not recognized by human eye |
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| b. | Infrared lights wavelengths longer than microwaves |
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| c. | Infrared lights wavelengths shorter than visible |
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| d. | Question does not provide sufficient data or is vague |
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