NSO Level 1- Science Olympiad (SOF) Class 7: Questions 223 - 228 of 593
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Question number: 223
» Physical and Chemical Changes
Question
Which of the following is not a physical property of a substance?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Shape |
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| b. | Flammability |
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| c. | Size |
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| d. | Density |
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Question number: 224
Question
Silkworms producing Tussar silk are reared on which plant?
Image of the Silkworms
Image of the Silkworms
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Sal |
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| b. | Neem |
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| c. | Castor |
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| d. | Polyanthus |
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Question number: 225
Question
Acids are stored in which of the following containers?
Image Shows Containers
Image shows containers
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Metallic container |
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| b. | Plastic container |
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| c. | Glass container |
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| d. | None of the above |
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Question number: 226
Question
Silk fibre is produced at which stage in the life cycle of Silkworm?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |  The Life Cycle of Silkworm: Choice A The life cycle of Silkworm |
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| b. |  The Life Cycle of Silkworm: Choice B The life cycle of Silkworm |
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| c. |  The Life Cycle of Silkworm: Choice C The life cycle of Silkworm |
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| d. |  The Life Cycle of Silkworm: Choice D The life cycle of Silkworm |
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Question number: 227
Question
Red litmus paper is dipped in a solution. The color of the red litmus paper remains red. What is the nature of the solution?
Red Litmus Paper in Figure
Red litmus paper in figure
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Basic |
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| b. | Acidic |
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| c. | Either acidic or neutral |
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| d. | All of the above |
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Question number: 228
» Physical and Chemical Changes
Question
Priya took 2 destarched potted plants X and Y and set up an experiment as shown in the figure. She left both the plants in sunlight for few hours and then tested the plants X and Y for starch. Plant X showed presence of starch while plant Y gave negative results for starch test.
Image of the Potted Plants X and Y
Image of the potted plants X and Y
What is proved by this?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Light is necessary for photosynthesis. |
|
| b. | Chlorophyll is necessary for photosynthesis. |
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| c. | Carbon dioxide is necessary for photosynthesis. |
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| d. | None of the above |
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