IAS PYQSubject: Science and Technology (123 Questions)
With reference to 'Direct Air Capture', an emerging technology, which of the following statements is/are correct?
- I.It can be used as a way of carbon sequestration.
- II.It can be a valuable approach for plastic production and in food processing.
- III.In aviation, it can be a source of carbon for combining with hydrogen to create synthetic low-carbon fuel.
Select the correct answer using the code given below.
Related topics in Science and Technology
Consider the following types of vehicles:
- I.Full battery electric vehicles
- II.Hydrogen fuel cell vehicles
- III.Fuel cell-electric hybrid vehicles
How many of the above are considered as alternative powertrain vehicles?
Related topics in Science and Technology
With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
- I.All types of UAVs can do vertical landing.
- II.All types of UAVs can do automated hovering.
- III.All types of UAVs can use battery only as a source of power supply.
How many of the statements given above are correct?
Related topics in Science and Technology
In the context of electric vehicle batteries, consider the following elements:
- I.Cobalt
- II.Graphite
- III.Lithium
- IV.Nickel
How many of the above usually make up battery cathodes?
Related topics in Science and Technology
Consider the following substances:
- I.Ethanol
- II.Nitroglycerine
- III.Urea
Coal gasification technology can be used in the production of how many of them?
Related topics in Science and Technology
2023
Consider the following statements:
* Statement-I: India, despite having uranium deposits, depends on coal for most its electricity production.
* Statement-II: Uranium, enriched to the extent at of least 60%, is required for the production of electricity.
Which one of the following is correct in respect of the above statements?
2023
Consider the following statements:
1. Some mushrooms have medicinal properties.
2. Some mushrooms have psycho-active properties.
3. Some mushrooms have insecticidal properties.
4. Some mushrooms have bioluminescent properties.
How many of the above statements are correct?
2023
Consider the following statements:
1. Some microorganisms can grow in environments with temperature above the boiling point of water.
2. Some microorganisms can grow in environments with temperature below the freezing point of water.
3. Some microorganisms can grow in highly acidic environment with a pH below 3.
How many of the above statements are correct?
102 more questions from 2015–2023 are part of IAS PYQ Premium
Unlock the full archive of detailed questions and explanations from previous years, without individual locks on every card.