Basic Science Practice Question and Answer
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Q: The approximate percentages of oxygen, nitrogen, and carbon dioxide in pure air on the Earth's atmosphere are:
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5ff6bac0d9d7f36ecf2a38e3- 10.03%, 21% and 78% respectivelyfalse
- 278%, 21% and 0.03% respectivelyfalse
- 321%, 78% and 0.03% respectivelytrue
- 421%, 7.8% and 0.03% respectivelyfalse
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Answer : 3. "21%, 78% and 0.03% respectively"
Q: Identify the CORRECT phenomena involved during a rainbow formation.
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5ff6b73dd9d7f36ecf2a1294- 1Gravitation, Condensation and Total Internal Reflectionfalse
- 2Refraction, Dispersion and Total Internal Reflectiontrue
- 3Polymerization, Total Internal Reflection and Surface Tensionfalse
- 4Dispersion, Coherence and Ionisationfalse
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Answer : 2. "Refraction, Dispersion and Total Internal Reflection"
Q: The food substances which get oxidised easily can be kept for longer duration by adding
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5ff5936c9fc6f75b3f623f0b- 1oxygen and keeping them in sun for few daysfalse
- 2nitrogen and keeping them in sun for few daysfalse
- 3oxygen and keeping them in airtight containersfalse
- 4nitrogen and keeping them in airtight containerstrue
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Answer : 4. "nitrogen and keeping them in airtight containers"
Q: Our eyes are able to detect light due to the presence of the which of the following receptor?
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5ff585659fc6f75b3f6126a4- 1Phonoreceptorsfalse
- 2Thigmoreceptorsfalse
- 3Photoreceptorstrue
- 4Gustatoreceptorsfalse
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Answer : 3. "Photoreceptors"
Q: The level of sound during normal conversation is
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5feafe33f6205c4d625cf626- 120 dbfalse
- 240 dbfalse
- 360 dbtrue
- 480 dbfalse
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Answer : 3. "60 db"
Q: Which of the following is not a source of air pollution?
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5feafdd900e3f71b828c00f8- 1Automobile exhaustfalse
- 2Burning of firewoodfalse
- 3Windmilltrue
- 4Power plantfalse
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Answer : 3. "Windmill"
Q: X-rays were discovered by ________.
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5fe9aaf2755fc73bd07964dc- 1Faradayfalse
- 2Roingtontrue
- 3H. Devifalse
- 4Lavoisierfalse
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Answer : 2. "Roington"
Q: The study of Oncology is
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5fe9a87e00e3f71b8285e317- 1Birdsfalse
- 2Cancertrue
- 3Mammal creaturefalse
- 4Landfalse
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Answer : 2. "Cancer"
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