Daily Current Affairs Quiz Prelims Practice 2027
- Collective flow behaviour has traditionally been associated with collisions involving heavy nuclei.
- Recent experiments indicate that signatures of strongly interacting matter may emerge even in lighter nuclear collisions.
- Jet quenching refers to the enhancement in energy of particles escaping the collision medium.
Statement 1 is correct — collective fluid-like behaviour was traditionally thought to emerge only in large heavy-ion collisions such as lead-lead at the LHC, which were considered necessary to create Quark-Gluon Plasma (QGP). Statement 2 is correct — recent oxygen-ion collision experiments at the LHC showed evidence of collective behaviour even in lighter nuclear systems, suggesting strongly interacting matter may form in smaller systems than previously believed. Statement 3 is incorrect — jet quenching refers to the energy loss (not enhancement) experienced by energetic particles while traversing the dense QGP medium, and is one of the strongest signatures for QGP formation.
- The Muga silkworm feeds primarily on Som and Soalu plants.
- Assam accounts for the overwhelming majority of global Muga silk production.
Both statements are correct. The Muga silkworm (Antheraea assamensis) feeds primarily on Som (Machilus bombycina) and Soalu (Litsea polyantha), host plants native to Assam and essential for its cultivation. Assam produces nearly 90% of the world's Muga silk, making it the dominant global producer of this naturally golden silk, prized for its lustre, high durability, and increased sheen after washing.
Reason (R): Foreign nationals seeking extension beyond 180 days must now register before the expiry of the permitted stay period.
Both A and R are true and R correctly explains A. The amended rules remove the earlier flexibility that allowed certain foreigners to register within a limited window after the 180-day stay limit expired, instead requiring advance registration before expiry. This shift from post-expiry to pre-expiry compliance is precisely what makes the framework proactive and preventive, making R the direct explanation of A.
- Meghalaya — Assam
- Sikkim — West Bengal
- Nagaland — Arunachal Pradesh
Pair 1 is correct — Meghalaya shares its entire interstate boundary only with Assam. Pair 2 is correct — Sikkim shares its only interstate boundary with West Bengal. Pair 3 is incorrect — Nagaland borders Assam, Arunachal Pradesh, and Manipur (plus an international border with Myanmar), so it does not share a boundary with only one Indian state.
ENSO (El Niño–Southern Oscillation) is a coupled ocean-atmosphere phenomenon in the tropical Pacific; El Niño refers to the warming of sea surface temperatures in the central and eastern Pacific (typically weakening the Indian monsoon), while La Niña refers to cooling of the same region (generally strengthening monsoon rainfall). The Indian Ocean Dipole, Walker Circulation, and Madden-Julian Oscillation are related but distinct phenomena.
