RRB NTPC 2025-04-09-2025-2 RRB Question Paper

RRB NTPC 2025 - Undergraduate Level Question Papers

RRB NTPC 2025-04-09-2025-2 RRB Questions

21.
What is the known equation that connects the concentration of a buffer solution's constituents, weak acid/salt or weak base/salt, and its pH?
A.
Arrhenius equation
B.
Nernst - Boyle equation
C.
Henderson-Hasselbalch equation
D.
Van't Hoff equation
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ANSWER :
C. Henderson-Hasselbalch equation
22.
Which of the following is not a function of biosphere reserves?
A.
Cultural heritage preservation
B.
Promotion of monoculture farming
C.
Sustainable development of local communities
D.
Conservation of biodiversity
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ANSWER :
B. Promotion of monoculture farming
23.
Which sector was the largest contributor to India's GDP between 1947 and 1991?
A.
Service sector
B.
Agriculture sector
C.
Industrial sector
D.
Financial sector
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ANSWER :
B. Agriculture sector
24.
Which of the following is considered a non-renewable natural resource?
A.
Wind energy
B.
Forests
C.
Solar energy
D.
Natural gas
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ANSWER :
D. Natural gas
25.
In which of the following years was Sanskrit declared a Classical Language in India?
A.
2005
B.
2003
C.
2010
D.
2002
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ANSWER :
A. 2005
26.
Which of the following cities hosted the 2025 Conferences of the Parties for the Basel, Rotterdam and Stockholm Conventions (BRS COPs)?
A.
Geneva
B.
Rotterdam
C.
Stockholm
D.
Hong Kong
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ANSWER :
A. Geneva
27.
The Banking Laws (Amendment) Bill passed in the Rajya Sabha in March 2025 extended the tenure of Directors of co-operative banks to how many years?
A.
10 years
B.
6 years
C.
9 years
D.
8 years
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ANSWER :
A. 10 years
28.
Which of the following organisations unveiled the country's first five Carbon Capture and Utilisation (CCU) testbeds in the cement sector in May 2025?
A.
Indian Space Research Organisation (ISRO)
B.
Union Ministry of Environment, Forest and Climate Change (MoEFCC)
C.
Department of Science and Technology (DST), Government of India
D.
Defence Research and Development Organisation (DRDO)
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ANSWER :
C. Department of Science and Technology (DST), Government of India
29.
The retreating monsoon causes rainfall mainly in _____.
A.
Assam
B.
Tamil Nadu
C.
Maharashtra
D.
Punjab
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ANSWER :
B. Tamil Nadu
30.
In an optical fibre, the core is made of a _________.
A.
material with higher refractive index
B.
material with lower refractive index
C.
material with higher density
D.
material with lower density
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ANSWER :
A. material with higher refractive index