NSO Level 1- Science Olympiad (SOF) Class 8: Questions 475 - 476 of 1076
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Question number: 475
» Synthetic Fibres and Plastics
Question
We are familiar with the four R’s used in environment protection. Identify the R used in the situations
In Aditya’s school, students make posters and slogans as project to save environment and put up them in the school as well as nearby areas. The aim of this activity is to
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Warn the people about the dangers of environment pollution. | |
b. | Make the people aware of the need of saving environment. | |
c. | Seek the involvement of people in keeping our environment safe and clean. | |
d. | All a. , b. and c. are correct | |
Question number: 476
Question
Diya was doing some experiments. The steps of procedure are given here.
i) took two test tubes, marked them as A and B.
ii) Put small pieces of copper wire in both the test tubes.
iii) added 4 to 5 drops of dilute hydrochloric acid in test tube A and dilute sulphuric acid in test tube B.
iv) Brought a lighted match stick near the mouth of the test tubes
The observation would be
Choices
| Choice (4) | Response | |
|---|---|---|
a. | In the test tubes A and B, the match stick extinguishes quickly. | |
b. | In test tube B, the match stick burns with a pop sound. | |
c. | In test tube A, the match stick burns with a pop sound. | |
d. | In test tubes A and B, the match stick burns with a pop sound. | |