NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1473 - 1480 of 1998
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Question 1473
Question MCQ▾
grams of water contains ________ moles
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Choice (4) | Response |
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d. |
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EditQuestion 1474
Question MCQ▾
A sound source is having a frequency . Calculate numbers of vibration in a minute.
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Choice (4) | Response |
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a. | 14400 |
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b. | 40 |
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c. | 240 |
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d. | None of the above |
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EditQuestion 1475
Question MCQ▾
The causative agent for malaria is
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Choice (4) | Response |
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a. | Amoeba |
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b. | Plasmodium |
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c. | Taenia solium |
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d. | Ascaris |
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EditQuestion 1476
Question MCQ▾
Let force is applied on an object of mass and after increment in its speed, its speed becomes in . Then its initial velocity is:
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EditQuestion 1477
Question MCQ▾
The speed of sound is maximum in:
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Choice (4) | Response |
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a. | Same for all matters. |
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b. | Liquid |
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c. | Gas |
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d. | Solid |
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EditQuestion 1478
Question MCQ▾
If a speed of a sound is and its wavelength is , then the sound is:
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Choice (4) | Response |
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a. | Audible |
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b. | Supersonic |
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c. | Infrasonic |
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d. | Ultrasonic |
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EditQuestion 1479
Question MCQ▾
Ultrasonic wave are used for detecting object under the water. What technique/device is used for this?
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Choice (4) | Response |
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a. | Phacoemulsification. |
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b. | Ultrasonography |
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c. | Sound Navigation and Ranging. |
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d. | Echocardiography |
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EditQuestion 1480
Question MCQ▾
A gold statue contains of gold and the rest copper. How many atoms of gold are present in one gram of this statue of gold?
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Choice (4) | Response |
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d. |
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