Current Affairs Question - 20 August 2022
Science & Technology
Perovskites
Consider the following statements:
- Perovskites are leading candidates for eventually replacing silicon as the material of choice for solar panels.
- A perovskite is a material that has the same crystal structure as the mineral calcium titanium oxide, the first-discovered perovskite crystal.
- Generally, perovskite compounds have a chemical formula ABX2, where 'A' and 'B' represent cations and X is an anion that bonds to both.
Which of the above statement(s) is/are true?
| A |
1 and 2
|
|
| B |
2 and 3
|
|
| C |
1 and 3
|
|
| D |
All of the above
|
|
Ecology & Environment
Karakoram Anomaly
Consider the following statements:
- Recently, Indian researchers postulated a new theory towards solving the mystery of Karakoram Anomaly.
- They attributed this phenomenon to recent revival of western disturbance.
- The study found that the precipitation intensity of western disturbances impacting Karakoram has increased by around 20% in last two decades.
Which of the above statement(s) is/are true?
| A |
1 and 2
|
|
| B |
2 and 3
|
|
| C |
1 and 3
|
|
| D |
All of the above
|
|
