Current Affairs Question - 17 August 2022
Science & Technology
Sodium-ion (Na+) Battery
Consider the following statements:
- A sodium-ion (Na+) battery is a kind of rechargeable battery which primarily relies on the movement of sodium ions between the positive and negative electrodes to work.
- Its working principle and cell construction are different from those of lithium-ion batteries.
Which of the above statement(s) is/are true?
| A |
1 only
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| B |
2 only
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| C |
Both 1 and 2
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| D |
Neither 1 nor 2
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Science & Technology
Nanocomposites
Consider the following statements:
- Recently, a team of Indian scientists has developed a nanocomposite using lignin and nanoparticles of cadmium sulfide called L@CdS QDs (quantum dots).
- Lignin is a complex, woody biopolymer that gives mechanical support to plants and helps transport water and nutrients.
- Lignin is rich in carbon, polyphenols, and antioxidants, besides having antimicrobial properties.
Which of the above statement(s) is/are true?
| A |
1 and 2
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| B |
2 and 3
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| C |
1 and 3
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| D |
All of the above
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