India needs to manage daylight much better than it does. Maximising it is also…
2023
India needs to manage daylight much better than it does. Maximising it is also a good place to start to be more energy efficient. Not using daylight properly comes at a cost - $4.1 billion, or 0.2% of GDP, according to a Cornell study, in addition to health impacts. Experts have suggested multiple time zones in India, perhaps reverting to the pre-1947 system of two time zones, as proposed by the Council of Scientific and Industrial Research (CSIR)- National Physical laboratory, India's official time keeper. But considering the huge investments required, as well as the logistical exercise of coordination, make this idea unattractive. Daylight savings is a more practical option.
Daylight savings time, or summertime is the system of advancing clock by an hour to get more light out of the day. This would permit using the extra hour of daylight in summer months between March and October. And it would avoid using lights on winter mornings because the sun rises later. This system will be particularly useful in the eastern and northeastern part of the country. To further maximise use of daylight, a shift away from uniform opening hours at workplaces can be advantageous. The sun sets roughly 90 minutes later in western parts of the country than in the eastern parts. In northeast and eastern states, establishments could begin work an hour earlier than elsewhere. It would allow people here to match their working hours to environmental cues, while giving a head start to others elsewhere.
Advancing time to maximise use of daylight has energy saving potential, which will significantly alter energy usage, cut down India's carbon footprint and help leverage the natural resource of sunlight. It's about maximising hay when the sun shines.
Pre-1947 India used the system of
A. Multiple time zones
B. Two time zones
C. One time zone
D. Daylight saving time
Choose the correct answer from the options given below:
Answer: A. A & B only — CONCEPTIn passage-based questions, separate the passage’s broad category from its specific detail. A specific count can also satisfy a broader plural…
- A.
A & B only
- B.
B only
- C.
B, C only
- D.
B, C & D only
Show answer & explanation
Correct answer: A
CONCEPT
In passage-based questions, separate the passage’s broad category from its specific detail. A specific count can also satisfy a broader plural category, while a later proposal must not be confused with a historical fact.
APPLICATION
The passage explicitly describes the pre-1947 arrangement as a system of two time zones. Apply that sentence to the four statements:
“Multiple time zones” is the broader category: two distinct time zones are more than one.
“Two time zones” repeats the passage’s exact numerical description.
“One time zone” conflicts with the stated count of two.
“Daylight saving time” is presented as a practical option for the future, not as the pre-1947 arrangement.
CROSS-CHECK
Keeping A and B together is logically consistent because B is the specific form of A. Adding C creates a contradiction, and adding D mixes a proposed clock-adjustment policy with the historical time-zone system.
RESULT
Therefore, the supported values are “Multiple time zones” and “Two time zones” only (A & B only).