Daily Current Affairs UPSC: News Based MCQs Quiz | 20th August 2025

Answer: (A) Only one

Detailed Explanation

Answer: (B) 2 only

Detailed Explanation

• While electrolysis is the most common method, green hydrogen can also be produced from biomass through gasification. This involves converting biomass into hydrogen and other byproducts.
• Biomass Gasification:
• Biomass, such as wood chips, agricultural residues, or dedicated energy crops, is heated in a controlled environment with limited oxygen and steam.
• This process, called gasification, breaks down the biomass into a gaseous mixture known as syngas, which primarily contains hydrogen (H2), carbon monoxide (CO), and carbon dioxide (CO2).
• The specific composition of the syngas depends on factors like the type of biomass, temperature, pressure, and the gasifying agent used (e.g., steam, oxygen, or air).
• 2. Hydrogen Extraction:
• The syngas produced from biomass gasification can be further processed to extract hydrogen.
• This often involves a water-gas shift reaction, which converts CO and water vapor into additional hydrogen and carbon dioxide.
• Various techniques, such as pressure swing adsorption (PSA), membrane separation, or adsorbers, can be used to separate and purify the hydrogen from the syngas.

Answer: (A) 1 only

Detailed Explanation

• Objectives: Demonstrate India’s human spaceflight capability by launching crew of 3 members to an orbit of 400 km (Low Earth Orbit) for a 3 days mission and bring them back safely to earth, by landing in Indian sea waters.
• Components of the Gaganyaan Mission
• The Launch Vehicle Mark-3 (LVM-3): Formerly known as the GSLV Mk-III, it is a three-stage rocket with:
• First stage: Two solid-fuel boosters strapped to the rocket core.
• Second stage: Powered by two liquid-fuelled, clustered Vikas 2 engines.
• Third stage: Equipped with the CE-20 indigenous cryogenic engine, using liquid hydrogen and liquid oxygen as fuel and oxidiser, respectively.
• The Orbital Module: It weighs 8. 2 tonnes and is the object launched into low Earth orbit by the LVM-3 rocket (See image).

Answer: (D) None of the above

Detailed Explanation

Answer: (A) Only one

Detailed Explanation

• The 128th Constitutional Amendment Bill 2023: 33% reservation for women in the Lok Sabha and all state Legislative Assemblies.
• The Constitution (One Hundred and Twenty-Ninth Amendment) Bill, 2024 proposes amendments to enable simultaneous elections for the Lok Sabha and State Legislative Assemblies.This bill, along with The Union Territories Laws (Amendment) Bill, 2024, has been referred to a Joint Parliamentary Committee.
• The 130th Constitutional Amendment Bill, 2025 for Criminal Charges against Prime Minister and Chief Ministers.

Answer: (A) Only two

Detailed Explanation

• Corporation tax – Entry 85 of Union List
• Banking – Entry 45 of Union List
• Post Office Savings Bank – Entry 39 of Union List
• Prisons – Entry 4 of State List
• Pilgrimages – Entry 7 of the State List