Q90. How many earthquakes were reported in India during November 2024–February 2025, according to the cited March 2025 data?
[RRB Group D – 1 Dec 2025 | 2025]
A. 136
B. 197
C. 159
D. 213
Answer: C. 159
Explanation: The cited Ministry of Earth Sciences data recorded 159 earthquake events during the specified four-month period. Continuous seismic surveillance is important because many tremors are too small to be widely felt, yet recorded patterns help scientists assess regional tectonic activity.
Q89. In which city was the National Landslide Forecasting Centre inaugurated in July 2024?
[SSC CHSL – 29 Nov 2025 | 2025]
A. Patna
B. Kolkata
C. Bhopal
D. Raipur
Answer: B. Kolkata
Explanation: The National Landslide Forecasting Centre was inaugurated in Kolkata to strengthen landslide forecasting and alerts. Rainfall-triggered slope failures threaten Himalayan and Western Ghats settlements. Timely forecasts can support route closures, evacuation decisions and improved planning in susceptible districts.
Q88. Which tropical-cyclone statement is incorrect?
a. They form in tropical latitudes.
b. Diameters can be 300–1,500 km or more.
c. Winds may exceed 50–60 km/h.
d. They turn clockwise in the Northern Hemisphere.
[MPSC Rajyaseva – 9 Nov 2025 | 2025]
A. Only a
B. Only b and c
C. Only d
D. Only b and d
Answer: C. Only d
Explanation: Northern Hemisphere cyclones rotate anticlockwise around a low-pressure centre because of the Coriolis effect. Cyclones over the Bay of Bengal therefore possess anticlockwise circulation. Their large circulation systems may span hundreds of kilometres and generate damaging winds and intense rainfall.
Q87. What triggered the destructive tsunami that struck Japan in 2011?
[DSSSB TGT Social Science – 8 Nov 2025 | 2025]
A. Submarine landslide alone
B. Eruption of Mount Fuji
C. Asteroid collision in Asia
D. Undersea earthquake near Tohoku
Answer: D. Undersea earthquake near Tohoku
Explanation: The magnitude-nine Tohoku earthquake ruptured a subduction zone offshore Japan, lifting the seabed and displacing seawater. The resulting tsunami devastated the coast. Comparable megathrust earthquakes also threaten the Indian Ocean, as demonstrated by the Sumatra earthquake of 2004.
Q86. Which is NOT a cause of a tsunami?
[DSSSB TGT Social Science – 8 Nov 2025 | 2025]
A. Earthquakes
B. Underwater landslides
C. The Moon’s gravitational pull
D. Volcanic eruptions
Answer: C. The Moon’s gravitational pull
Explanation: The Moon’s gravitational attraction primarily produces ocean tides, not tsunami waves. Tsunamis arise from sudden large-scale displacement of water, generally by submarine earthquakes, volcanic eruptions or underwater slope failures. They are therefore physically different from routine high tides.
Q85. How does satellite imagery help manage natural disasters in India?
[SSC CGL – 25 Sep 2025 | 2025]
A. It creates 3D games
B. It connects mobile towers
C. It tracks migratory birds
D. It supplies timely information on floods, cyclones and droughts
Answer: D. It supplies timely information on floods, cyclones and droughts
Explanation: Earth-observation satellites reveal cloud systems, inundated floodplains and changing surface conditions. Repeated images allow agencies to monitor hazard development, identify affected areas and plan relief. Satellite information complements field measurements and forecasts rather than replacing local observations.
Q84. Match landslides to years:
a. Karmi, Bageshwar
b. Malpa
c. Neelkanth
d. Devpuri, Gairsain;
years
1. 1990
2. 1998
3. 1983
4. 2007.
[UKSSSC Patwari – 21 Sep 2025 | 2025]
A. a-3, b-2, c-1, d-4
B. a-2, b-3, c-4, d-1
C. a-1, b-3, c-4, d-2
D. a-1, b-2, c-3, d-4
Answer: A. a-3, b-2, c-1, d-4
Explanation: The pairings are Karmi–1983, Malpa–1998, Neelkanth–1990 and Devpuri–2007. Uttarakhand’s steep, fractured mountain terrain and heavy seasonal rainfall make landslides recurrent hazards. Historical inventories help identify unstable areas and prioritise protective works and relocation.
Q83. Which listed natural disaster is not primarily atmospheric?
[CDS-II General Knowledge – 14 Sep 2025 | 2025]
A. Drought
B. Hailstorm
C. Frost
D. Avalanche
Answer: D. Avalanche
Explanation: An avalanche is a rapid downslope movement of snow and ice under gravity, so it is a mass-movement hazard. Drought, hailstorms and frost involve atmospheric conditions. Avalanches can be triggered by snowfall, warming or disturbances on unstable mountain slopes.
Q82. Regarding the Richter scale, consider:
1. It measures earthquake intensity.
2. It indicates earthquake magnitude related to energy release.
Which are correct?
[CDS-II General Knowledge – 14 Sep 2025 | 2025]
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Answer: B. 2 only
Explanation: Richter magnitude quantifies earthquake size using seismic-wave measurements, while intensity describes shaking effects at a particular place. The Modified Mercalli scale expresses intensity. A single earthquake has one magnitude estimate but can produce different intensities at different locations.
Q81. Regarding the National Institute of Disaster Management:
1. It was first constituted in 2006.
2. It assists national-level disaster-management policy formulation under the 2005 Act.
Which statements are correct?
[CDS-II General Knowledge – 14 Sep 2025 | 2025]
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Answer: B. 2 only
Explanation: The institution evolved from an earlier disaster-management training centre and predates 2006. Under the Disaster Management Act it has roles in research, training, capacity building and policy support. Its work complements NDMA’s direction of national disaster policy.
