CM Samrat Choudhary opens ₹122.39-crore Sasaram bypass in Rohtas; Bihar's Gangetic dolphins more than double in Bhagalpur stretch; optogenetics wins 2026 Nobel in Medicine as RBI MPC meets
Tuesday, 6 October 2026 · IST · Bihar + National · 11 items · 2 MCQs
Bihar leads today with CM Samrat Choudhary's first Rohtas visit (176 schemes worth ₹550 crore, a 9.2 km Sasaram bypass), the cabinet-approved Bihar Green Hydrogen Policy 2026, a doubling of Gangetic dolphins in the Sultanganj–Manihari stretch and an early monsoon withdrawal amid floods in six districts. Nationally, the 2026 Nobel Prize in Medicine went to optogenetics, the RBI MPC decides on 7 October with repo at 5.25%, and CAFE-III fuel-efficiency norms were notified.
Today at a glance — things to remember
CM Samrat Choudhary opens 9.2 km Sasaram bypass (₹122.39 cr) in Rohtas
176 schemes worth ₹550 crore launched/founded in Rohtas district
Bihar Green Hydrogen Policy 2026: 1 lakh tonnes/yr by 2031; nodal BREDA
Cabinet: ₹2,761.55 cr to solarise 2,554 agricultural feeders
On 6 October 2026, CM Samrat Choudhary made his first visit to Rohtas as CM, inaugurating the Sasaram bypass and launching development works to ease chronic jams on the old GT Road.
Key facts
9.2 km bypass from Beda bus stand to Moker, built at ₹122.39 crore with bridges, culverts and road-over-bridges.
176 schemes worth over ₹550 crore inaugurated / foundation stones laid.
Youth dialogue at Narayan Medical College, Jamuhar; an astronomy lab opened at PM SHRI Kendriya Vidyalaya.
A cooperation camp in Sasaram showcased welfare schemes, with focus on women's livelihood.
Way forward
Link bypasses with logistics parks along the GT Road corridor; time-bound completion and maintenance audits.
Concept
Sasaram — tomb of Sher Shah Suri, who rebuilt the Sadak-e-Azam (GT Road); Rohtasgarh Fort is in Rohtas district. Samrat Choudhary became Bihar's 24th CM on 15 April 2026.
Stat-tile row: 176 schemes, Rs 550 crore total, 9.2 km Sasaram bypass, Rs 122.39 crore bypass cost, first Rohtas visit on 6 October 2026. — StudyForGS
2. Bihar Green Hydrogen Policy 2026 cleared: 1 lakh tonnes a year by 2031
GS-II: Bihar's industrial & energy policy; role of S&T in development. Prelims: state policies, nodal agencies.
Context
The state cabinet chaired by CM Samrat Choudhary on 30 September 2026 approved 30 agendas, headlined by the Bihar Green Hydrogen Policy 2026 and a large solar-feeder programme for farmers.
Key facts
Target: 1 lakh tonnes (0.1 MMT) green hydrogen per year by 2031; 1 GW electrolyser manufacturing and ~2.5 GW renewable capacity.
Expected ₹16,000 crore investment and ~12,000 jobs; nodal agency BREDA.
₹351.85 crore to electrify 21,644 households in 177 habitations of Kaimur & Rohtas.
Way forward
Pair GH2 hubs with Barauni refinery & fertiliser demand; secure water and cheap round-the-clock renewable power.
Concept
Green hydrogen = H2 from electrolysis of water using renewable power. National Green Hydrogen Mission (Jan 2023): outlay ₹19,744 crore, target 5 MMT/yr by 2030; SIGHT incentive programme.
Flowchart of Bihar Green Hydrogen Policy 2026: renewable power and water feed electrolysers to make green hydrogen used in refinery, fertiliser and transport, with targets of 1 lakh tonnes by 2031, 1 GW electrolyser, 2.5 GW RE, Rs 16,000 crore investment and 12,000 jobs, nodal agency BREDA. — StudyForGS
3. Gangetic dolphins more than double in Bihar's Sultanganj–Manihari stretch
GS-II: Bihar geography — rivers, biodiversity. Prelims: protected areas of Bihar, species status (IUCN, WPA).
Context
Data released around National Dolphin Day (5 October) show the Ganga river dolphin ('Sons') has recovered strongly in the Bhagalpur region, though pollution remains a threat.
Vikramshila Gangetic Dolphin Sanctuary (Sultanganj–Kahalgaon) alone has ~200.
Drivers: Namami Gange, anti-poaching drives, awareness among boatmen.
Threats: high BOD, untreated sewage, plastics, agro-chemicals, fishing nets.
Way forward
Make STPs fully functional on the Ganga in Bihar; regulate dredging and vessel traffic on NW-1.
Concept
Platanista gangetica — National Aquatic Animal (2009), IUCN Endangered, Schedule I of WPA 1972. Vikramshila sanctuary notified 1991 — India's only dolphin sanctuary. Project Dolphin announced 2020.
Bar chart comparing Gangetic dolphin count in Bihar's Sultanganj–Manihari stretch: about 95 in 1998 and about 215 in 2025, with about 200 in Vikramshila sanctuary in 2025. — StudyForGS
4. Bihar's Vaibhav Sooryavanshi, 15, becomes youngest Indian Asian Games gold medallist
BIHARBPSC: Prelims (Sports & Bihar Personalities)
Syllabus linkage
Prelims: sports events, awards, Bihar-linked personalities. GS-I: current events of national importance.
Context
The 20th Asian Games at Aichi–Nagoya (Japan) closed on 4 October 2026; Samastipur's Vaibhav Sooryavanshi won gold with India's men's cricket team.
Key facts
Final: India beat Pakistan by 19 runs; Sooryavanshi aged 15 — youngest Indian Asian Games gold medallist.
Closing-ceremony flag-bearer Neeru Dhanda (shooting); next Games Doha 2030.
Way forward
Scale up Rajgir Sports Academy and district stadiums to convert Bihar's talent into Olympic medals.
Concept
Asian Games run by the OCA; first held at New Delhi (1951); cricket included since Guangzhou 2010. Sooryavanshi hit the fastest IPL century by an Indian (35 balls, 2025).
Donut chart of India's 85 medals at the 2026 Asian Games: 21 gold, 27 silver and 37 bronze, India ranked 4th. — StudyForGS
5. Monsoon retreats a week early from Bihar; floods hit 466 villages in 6 districts
GS-II: Bihar geography — rivers, floods, disaster management. Prelims: monsoon dynamics, river systems of Bihar.
Context
The south-west monsoon has begun withdrawing from Bihar (line near Supaul) nearly a week ahead of its normal date, even as late-season floods affect parts of the state.
Key facts
Normal withdrawal: 10–11 October; light rain possible till 9 October (Bay of Bengal low).
466 villages in 6 districts hit; ~8 lakh people affected.
92,730 people shifted to safer places; Saran worst-hit, also Munger, Khagaria.
Yellow alert for thunderstorms in 8 districts on 6 October.
Way forward
Shift from embankment-only approach to basin planning with Nepal, early-warning and flood-plain zoning.
Concept
Bihar is India's most flood-prone state — about 73% of its area is flood-prone; North Bihar rivers (Kosi — 'Sorrow of Bihar', Gandak, Bagmati, Kamla) originate in Nepal. Kosi Treaty 1954, Gandak Treaty 1959.
Flood-management schematic for Bihar: Himalayan rivers from Nepal (Kosi, Gandak, Bagmati) flow into north Bihar and the Ganga, with current impact figures of 466 villages, 6 districts, 8 lakh people and 92,730 evacuated, and response tools — embankments, early warning, relief camps and basin planning. — StudyForGS
6. Gaya Pitru Paksha Mela enters final phase; strict Durga Puja rules across Bihar
GS-I: Indian culture with Bihar's role — pilgrimages, fairs, festivals. Prelims: temples, rivers & vedis of Gaya.
Context
The Pitru Paksha Mela at Gaya (began 25 September) concludes on 10 October; meanwhile the state has tightened Durga Puja security in all districts.
Key facts
Final-phase pind daan at Gayakoop, Mundprishtha, Bhimgaya; milk tarpan in the Falgu.
Concluding rites at Vaitarani and Akshayavat; pilgrims from India and abroad.
Durga Puja: DJ ban, mandatory licences for pandals, idols and immersion processions.
Social-media monitoring to prevent rumours and communal tension.
Way forward
Develop Gaya under a spiritual-circuit model (Gaya–Bodh Gaya–Rajgir) with crowd and waste management.
Concept
Vishnupad Temple, Gaya — rebuilt by Ahilyabai Holkar (1787) on the Falgu bank. Durga Puja in Kolkata is on UNESCO's Intangible Cultural Heritage list (2021).
7. Nobel Prize in Medicine 2026 for optogenetics — controlling neurons with light
SCI-TECHBPSC: Prelims + Mains GS-II (Role of Science & Technology)
Syllabus linkage
GS-II: role and impact of S&T — biotechnology, neuroscience. Prelims: awards, scientific discoveries.
Context
On 5 October 2026, the Nobel Assembly at Karolinska Institutet awarded the prize 'for discoveries concerning light-gated ion channels and optogenetics'.
Key facts
Laureates: Karl Deisseroth (Stanford, USA), Peter Hegemann (Humboldt Univ., Berlin), Georg Nagel (Univ. of Würzburg).
Hegemann & Nagel found channelrhodopsin — a light-sensitive protein in algae.
Deisseroth put its gene into neurons, switching them on with blue light at millisecond precision.
India can leverage neuroscience missions and brain-research centres for therapies for Parkinson's, depression and blindness.
Concept
Optogenetics = genetics + optics; uses opsins (light-gated ion channels) to control specific cells. Ion channel — membrane protein letting ions (Na+, K+) pass, generating nerve impulses.
Four-step flowchart of optogenetics: channelrhodopsin found in algae, its gene inserted into neurons, blue light opens the ion channel, and the neuron fires — used to study memory, emotion and behaviour. — StudyForGS
8. RBI MPC meets 5–7 October; decision on repo rate (5.25%) due tomorrow
The Monetary Policy Committee led by Governor Sanjay Malhotra began its review on 5 October; the decision will be announced on 7 October 2026 at 10:00 AM.
Key facts
Repo rate at 5.25%, stance neutral (held in August 2026).
RBI cut rates by a cumulative 125 bps in 2025.
Most economists polled expect a 25 bps hike — the first in almost four years.
RBI projects FY27 real GDP growth at 6.7%.
Way forward
Balance inflation control with growth; ensure faster transmission to bank lending and deposit rates.
Concept
MPC — 6 members (3 RBI + 3 Centre-nominated) under Sec. 45ZB, RBI Act 1934 (amended 2016); CPI inflation target 4% ± 2%. Repo = rate at which RBI lends to banks.
9. 3D-printed rural homes under PMAY-G: pilot of 177 houses launched in Andhra Pradesh
SCI-TECHBPSC: Prelims + Mains GS-II (Schemes; S&T in Development)
Syllabus linkage
GS-II: welfare schemes, application of technology in rural development. Prelims: PMAY-G features.
Context
Union Rural Development Minister Shivraj Singh Chouhan and CM N. Chandrababu Naidu launched the pilot on 4 October 2026 in Guntur district.
GS-II: energy conservation, clean technology. Prelims: BEE, Energy Conservation Act, emission norms.
Context
The Ministry of Power, with the Bureau of Energy Efficiency (BEE), has notified Corporate Average Fuel Economy (CAFE-III) norms for passenger vehicles.
Key facts
In force 1 April 2027 – 31 March 2032; aims at ~16.7% fuel-efficiency gain.
Benchmark tightens from 3.996 to 3.327 litres/100 km (2027-28 to 2031-32).
Reference weight raised from 1,082 kg to 1,229 kg; softer targets for lighter cars.
Super credits: EVs 3x, plug-in hybrids 2.5x, strong hybrids 1.6x.
Way forward
Align with EV charging roll-out and ethanol blending; guard against loopholes via real-world testing.
Concept
CAFE norms issued under the Energy Conservation Act, 2001; CAFE-I (2017), CAFE-II (2022). Fleet average — a maker's whole sales mix must meet the target, not each model.
11. First overseas cargo from Upper Assam since 1947 sails on Brahmaputra to Bangladesh
Integrate with NW-1 (Ganga) terminals in Bihar for an eastern multimodal waterway grid.
Concept
NW-2: Brahmaputra, Sadiya–Dhubri (891 km). NW-1: Ganga, Haldia–Prayagraj (1,620 km), with a terminal at Patna (Gaighat). IWAI set up 1986; Protocol on Inland Water Transit & Trade signed 1972.
Data point of the day
55.1
India Manufacturing PMI — September 2026 Up from 52.8 in August; strongest since February 2026 as new orders and hiring rebounded. A reading above 50 means expansion.
Prelims rapid-fire
Bihar's Ramsar sites — 5 — Kanwar (Begusarai), Nagi & Nakti (Jamui), Gokul Jalashay (Buxar), Udaipur Jheel (W. Champaran); Ghatora wetland now in recognition process
National Dolphin Day — 5 October (first observed 2022)
Gaya Pitru Paksha Mela 2026 — 25 Sept – 10 Oct; Vishnupad Temple on the Falgu
Next Asian Games — Doha, Qatar — 2030
IWC-70 (whaling commission) — Hobart, Australia; Hobart Declaration; India member since 1981
New MD & CEO, HDFC Bank — Anup Bagchi — from 27 Oct 2026; first external appointee
Practice MCQs — BPSC Prelims pattern
Q1. Consider the following statements about the Vikramshila Gangetic Dolphin Sanctuary: 1. It extends from Sultanganj to Kahalgaon in Bihar. 2. The Gangetic dolphin is India's National Aquatic Animal. 3. The Gangetic dolphin is listed as 'Vulnerable' on the IUCN Red List. Which of the statements given above is/are correct?
1 only
1 and 2 only
2 and 3 only
1, 2 and 3
Show answer
Answer: B The sanctuary (notified 1991) covers the Sultanganj–Kahalgaon stretch; the dolphin is the National Aquatic Animal (2009) but is Endangered, not Vulnerable, on the IUCN list.
Q2. The 2026 Nobel Prize in Physiology or Medicine was awarded for discoveries concerning:
mRNA vaccine technology
Light-gated ion channels and optogenetics
MicroRNA and gene regulation
Peripheral immune tolerance
Show answer
Answer: B Deisseroth, Hegemann and Nagel were honoured for channelrhodopsin and optogenetics — controlling neurons with light.
Mains practice question
Q. Bihar's Green Hydrogen Policy 2026 aims to turn the state from an energy importer into a clean-energy hub. Discuss its potential and the challenges specific to Bihar.
Hint / approach
Targets (1 lakh t by 2031, 1 GW electrolysers, ₹16,000 cr); demand anchors — Barauni refinery/fertiliser, transport; challenges — land, water, high RE cost, grid, skills; link with solar feeders & National Green Hydrogen Mission.
📌 One-line revision: Sasaram bypass 9.2 km / ₹122.39 cr | GH2 policy 1 lakh t by 2031, BREDA | Dolphins 95 → ~215 | Floods 466 villages, 6 districts | PMI 55.1 | Nobel Med: optogenetics | Repo 5.25%, MPC verdict 7 Oct
