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MCQs - 2026-04

1791.
Green hydrogen is produced by splitting water using:
A Fossil fuels
B Nuclear energy
C Renewable energy sources
D Geothermal energy
1792.
What is the primary objective of India's National Green Hydrogen Mission?
A To increase the import of fossil fuels.
B To become a global hub for green hydrogen production and export.
C To promote the use of nuclear energy for hydrogen production.
D To subsidize the production of grey hydrogen.
1793.
Early trials of bio-concrete technology in the Indo-Pacific region have shown:
A A decrease in coral larval settlement rates.
B A 40% higher settlement rate of coral larvae and faster growth.
C No significant difference compared to traditional restoration methods.
D Increased susceptibility of corals to bleaching.
1794.
Which Sustainable Development Goal (SDG) is most directly supported by advancements in coral reef restoration technologies like bio-concrete?
A SDG 13: Climate Action
B SDG 14: Life Below Water
C SDG 15: Life on Land
D SDG 11: Sustainable Cities and Communities
1795.
The development of bio-concrete technology is most directly aimed at addressing which major threat to coral reefs?
A Ocean acidification due to increased atmospheric CO2.
B Habitat loss and degradation due to climate change and human activities.
C Overpopulation of herbivorous fish that graze on corals.
D Introduction of non-native species that outcompete corals.
1796.
Which of the following is a key characteristic of bio-concrete in its interaction with the marine environment?
A It is highly acidic, promoting rapid coral calcification.
B It is designed to remain inert and unchanging for centuries.
C It is pH-neutral and gradually dissolves, releasing essential minerals.
D It actively inhibits the growth of algae on its surface.
1797.
What is the primary advantage of the new 'bio-concrete' technology for coral reef restoration?
A It is a permanent structure that provides long-term artificial habitat.
B It mimics natural coral skeletons, promoting higher larval settlement and growth rates.
C It is made from recycled plastic, reducing marine pollution.
D It actively repels invasive species from coral reefs.
1798.
What is a significant strategic benefit of enhanced indigenous SSA capabilities for India?
A It allows India to launch more commercial satellites for other countries.
B It reduces India's reliance on foreign data for space monitoring, bolstering strategic autonomy.
C It primarily helps in weather forecasting and climate change studies.
D It enables India to establish a permanent human presence on the Moon.
1799.
Which of the following are key components of the new SSA ground stations? 1. Advanced long-range radars. 2. Optical telescopes. 3. Sophisticated data processing centers. 4. Underwater sonar systems. Select the correct answer using the code given below:
A 1, 2 and 3 only
B 1, 3 and 4 only
C 2, 3 and 4 only
D 1, 2, 3 and 4
1800.
The expansion of India's SSA capabilities is part of which broader initiative?
A Project Gaganyaan
B Project Chandrayaan
C Project NETRA
D Project Mangalyaan