Option (a) is correct.

Explanation:

• Recently a  Member of Parliament (MPs) is alleged to have accepted bribes from businessmen in exchange for asking parliamentary questions targeting the Prime Minister.
• Question Hour is the first hour of every parliamentary sitting that is slotted for Question Hour. During this time, the members ask questions and the ministers usually give answers.
• Statement 1 is correct: A Starred question is asked by an MP and answered orally by the Minister-in-charge. Each MP is allowed to ask one starred question per day. 
  • When a question is answered orally, supplementary questions can be asked thereon.
• Statement 3 is correct: An unstarred question receives a written reply from the Ministry. These also need to be submitted at least 15 days in advance. 
  • Supplementary questions are not permitted.
• Statement 2 is not correct: Short notice questions are ones pertaining to a matter of urgent public importance. They are answered orally, followed by supplementary questions.
  • They can be asked with less than 10 days’ notice, with reasons for the short notice. 
  • They are answered orally, followed by supplementary questions.

Option (d) is correct.

Explanation:

• According to data from the Central Pollution Control Board, the Air Quality Index (AQI) in Mumbai was recorded as ‘poor’ at various stations with an AQI above 200, way worse than Delhi’s.
• AQI transforms complex air quality data of various pollutants into a single number (index value), nomenclature, and color. 
• There are six AQI categories,each category is decided based on ambient concentration values of air pollutants and their likely health impacts (known as health breakpoints). 
• AQI has been developed for eight pollutants viz. PM2.5, PM10, Ammonia, Lead, nitrogen oxides, sulfur dioxide, ozone, and carbon monoxide.

Option (c) is correct.

Explanation:

• Recently, The 25th meeting of the Subsidiary Body on Scientific, Technical and Technological Advice (SBSTTA-25) concluded in Nairobi, Kenya, with recommendations that would help Parties move from “agreement to action,”
• Statement 1 is correct:SBSTTA is established under Article 25 of the Convention on Biological Diversity (CBD).
• It serves as an advisory body to the Conference of the Parties (COP) and other subsidiary bodies of the CBD.
• Statement 2 is correct: SBSTTA is a multidisciplinary body open to participation by all Parties to the CBD. Its members are government representatives with relevant scientific and technical expertise.
• SBSTTA plays a crucial role in bridging the gap between scientific knowledge and policy decisions, ensuring that the latest scientific understanding informs biodiversity conservation efforts.

Option (a) is correct

Explanation:

• Members of the Muthuvan tribe of Anamalai hills, in Tamil nadu will be part of the Project Nilgiri Tahr, aimed at protecting Nilgiri Tahr.
• The project is to be implemented from 2022 to 2027.

Option (a) is correct

Explanation:

• The Prime Minister  inaugurated a 17-km stretch classified as the ‘priority section’ of the 82-km-long Delhi-Ghaziabad-Meerut Regional Rapid Transit System (RRTS) corridor.
• RRTS  is an integrated, mass transit network which aims to ensure “balanced and sustainable urban development” through better connectivity and access across the NCR.
• The National Capital Region Planning Board (NCRPB) recommended eight RRTS corridors to connect NCR towns with high speed rail-based commuter transit services.
• Implementing Agency: National Capital Region Transport Corporation (NCRTC) Or Namo Bharat under Ministry of Housing and Urban Affairs. 
  • NCRTC is a joint venture company of the Central government and Delhi, Haryana, Rajasthan and Uttar Pradesh.
• The RRTS is modelled on systems such as the RER in Paris, Regional-Express trains in Germany and Austria as well as the SEPTA Regional Rail in the United States.