Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 46 - 51 of 191
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Question 46
Question MCQ▾
The initial and the final velocity of a car was 0 km/hr and 90 km/hr. Find the acceleration of the car if the time taken was 10 seconds.
Choices
Choice (4) | Response |
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a. |
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b. |
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c. |
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d. |
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EditQuestion 47
Question MCQ▾
Why sand is used as a fire extinguisher to prevent small fires?
Choices
Choice (4) | Response |
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a. | Because sand is cheap. |
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b. | Because sand cover up all oxygen from the fire. |
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c. | Because sand is easily available |
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d. | All a., b. and c. are correct |
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EditQuestion 48
Question MCQ▾
Which of the following is bad conductor of heat?
Choices
Choice (4) | Response |
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a. | Gold |
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b. | Mercury |
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c. | Glass |
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d. | Silver |
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EditQuestion 49
Question MCQ▾
A pendulum of a clock takes 45 seconds to complete 15 oscillations, calculate its time period.
Choices
Choice (4) | Response |
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a. | 4 sec |
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b. | 9 sec |
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c. | 3 sec |
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d. | 6 sec |
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EditQuestion 50
Question MCQ▾
In a village all the rivers and lakes got dried up in summer, this process can be called as:
Choices
Choice (4) | Response |
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a. | Evaporation |
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b. | Sublimation |
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c. | Condensation |
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d. | Melting |
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EditQuestion 51
Question MCQ▾
For very high temperature range, which type of thermometers can be used?
Choices
Choice (4) | Response |
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a. | Galileo thermometers |
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b. | Water thermometers |
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c. | Mercury Thermometers |
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d. | Question does not provide sufficient data or is vague |
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