NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1026 - 1029 of 1076
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Question number: 1026
Question
The difference between a conducting and non-conducting material is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | A non-conducting material accumulates the acquired electric charge but a conducting material do not separate the charges. |
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| b. | A conductor discharges the charge through a non-conducting material. |
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| c. | A conductor accumulates the acquired electric charge but a non-conducting material do not separate the charges. |
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| d. | Question does not provide sufficient data or is vague |
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Question number: 1027
» Crop Production and Management
Appeared in Year: 2012
Question
The given figure shows an irrigation method used in agriculture practice.
Image Shows Agriculture Method
Image shows Agriculture Method
Which of the following is correct regarding this irrigation method?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | It is a boon in regions where availability of water is poor. |
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| b. | The method provides water to the plants drop by drop at their roots. |
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| c. | It is the best technique for watering fruit plants, gardens, and trees. |
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| d. | All a. , b. and c. are correct |
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Question number: 1028
» Chemical Effects of Electric Current
Question
Nowadays porcelain switch boards are replaced by plastic switch boards. The reason is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Plastic is light in weight and not brittle. |
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| b. | Plastic is an insulator. |
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| c. | Porcelain is not an insulator. |
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| d. | Both a. and b. are correct |
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Question number: 1029
» Chemical Effects of Electric Current
Question
Sachi was asked to observe an arrangement of electroplating and find out the cathode and anode. She noted her observations in a note pad as follows.
1. There is no marking of or in the cell.
2. One of the electrodes is thin and irregular in shape.
3. The switch is in off position, which shows that the process is completed.
The correct conclusion would be
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | The thin electrode is the cathode and the other one is anode. |
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| b. | Marking can be given to the end which is connected to the thick electrode. |
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| c. | The thin electrode is the anode and the other one is cathode. |
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| d. | The wire leading from thin electrode represents the ve end of the battery. |
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