Basic Science Practice Question and Answer
8 Q: How does a red rose appear in green light?
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601407535beea84b8ecf13bd- 1yellowfalse
- 2Pinkfalse
- 3Blacktrue
- 4Redfalse
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Answer : 3. "Black"
Q: Biological indicator of pollution of sulfur dioxide is: -
3060 05f60474680a26b7dab001517
5f60474680a26b7dab001517- 1mosstrue
- 2smokefalse
- 3Braophytafalse
- 4None of thesefalse
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Answer : 1. "moss"
Q: ______ is used in yellow lamp street lights.
3012 05ee86c2981b3dd0cad84bc1c
5ee86c2981b3dd0cad84bc1c- 1Neonfalse
- 2Nitrogenfalse
- 3Phosphorousfalse
- 4Sodiumtrue
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Answer : 4. "Sodium"
Q: Which of the following metals is used in accumulator batteries?
2930 15f746050a921aa16e68baaa1
5f746050a921aa16e68baaa1- 1Copperfalse
- 2Leadtrue
- 3Aluminumfalse
- 4Zincfalse
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Answer : 2. "Lead"
Explanation :
Thus, a metal used in storage batteries is Lead.
Q: The instrument used to examine a person’s digestive tract is called_____.
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5ee868ca109b5d6e015e6447- 1Oscilloscopefalse
- 2Microscopefalse
- 3Endoscopetrue
- 4Radiographfalse
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Answer : 3. "Endoscope"
Explanation :
A flexible tube called an endoscope is used to view different parts of the digestive tract. When passed through the mouth (as shown on the left), an endoscope can be used to examine the esophagus, stomach, and some of the small intestine.
Q: The maximum limit in decibels of sound intensity above which a person cannot hear—
2696 05f61c9fcd7fb716774bc0fab
5f61c9fcd7fb716774bc0fab- 150 dbfalse
- 270 dbfalse
- 385 dbfalse
- 4120 dBtrue
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Answer : 4. "120 dB"
Explanation :
For short durations of time, sounds up to a 120 dB are bearable and also considered safe by the world health organization, but again, listening to sounds at such high frequencies at regular intervals of stretched time durations is totally unsafe and makes the ears vulnerable to permanent hearing loss.
Q: What is the smallest unit of a chemical compound?
2639 0611b650edc4e2547a1c91c34
611b650edc4e2547a1c91c34- 1Atomicfalse
- 2electronfalse
- 3Protonfalse
- 4Moleculestrue
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Answer : 4. "Molecules"
Q: Octopus belongs to the phylum
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5f436ad397c6dd29b38ec477- 1Echinodermatafalse
- 2Nideriafalse
- 3Molluscatrue
- 4Chordatafalse
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