NSO Level 1- Science Olympiad (SOF) Class 8: Questions 959 - 961 of 1076
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Question number: 959
Appeared in Year: 2012
Question
Three experiment to investigate the re activities of three metals are shown.
What is the correct order of reactivity for these three metals?
Image Shows Three Experiment
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Manganese, Nickel, Chromium | |
b. | Manganese, Chromium, Nickel | |
c. | Nickel, Chromium, Manganese | |
d. | Chromium, Manganese, Nickel | |
Question number: 960
Question
The arrangement used in tall buildings to protect it from damage or destruction due to lightning is called
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Ear thing | |
b. | Antenna | |
c. | Lightning conductor | |
d. | Relay dish | |
Question number: 961
Appeared in Year: 2012
Question
A copper disc has a circular hole drilled in it so that it can act as washer for a nut and bolt. If this washer is heated equally all over which of the given option will be true?
Image Shows Circumference of Inner Hole and Washer
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Circumference of inner hole: Increases, Circumference of washer: Increases | |
b. | Circumference of inner hole: Increases, Circumference of washer: Decreases | |
c. | Circumference of inner hole: Decreases, Circumference of washer: Increases | |
d. | Circumference of inner hole: Remains constant, Circumference of washer: Increases | |