RRB Group D
RRB Question
1. What is the main reason the sky appears blue ?
(a) Reflection of oceans (b) Refraction of light (c) Scattering of sunlight (d) Absorption of light
Ans: (c) Scattering of sunlight
Explanation: Due to Rayleigh scattering, shorter wavelength blue light scatters more in the atmosphere.
2. Anodizing is primarily used for coating which metal ?
(a) Iron (b) Copper (c) Aluminium (d) Zinc
Ans: (c) Aluminium
Explanation: Anodizing creates a protective oxide layer mainly on aluminium.
3. The ‘PRAVAAH’ and ‘SARATHI’ portals were launched by which institution?
(a) RBI (b) SEBI (c) Ministry of Finance (d) NITI Aayog
Ans: (a) RBI
Explanation: Both portals were launched by the Reserve Bank of India.
4. The BrahMos Aerospace Testing Facility was inaugurated in which city of Uttar Pradesh ?
(a) Kanpur (b) Lucknow (c) Jhansi (d) Agra
Ans: (b) Lucknow
Explanation: The facility is part of the UP Defence Industrial Corridor.
5. Which of the following is a heterogeneous mixture ?
(a) Salt solution (b) Air (c) Milk (d) Sugar solution
Ans: (c) Milk
Explanation: Milk is a colloid, hence heterogeneous.
6. Average speed is:
(a) Always constant (b) A scalar quantity (c) A vector quantity (d) Zero for moving objects
Ans: (b) A scalar quantity
Explanation: Speed has magnitude only, no direction.
7. Which gland secretes Growth Hormone ?
(a) Thyroid (b) Adrenal (c) Pituitary (d) Pancreas
Ans: (c) Pituitary
Explanation: Growth hormone is secreted by the pituitary gland.
8. Which Indian received the Sasakawa Award 2025 ?
(a) Sunita Narain (b) Madhav Gadgil (c) Afroz Shah (d) Mrutyunjay Mohapatra
Ans: (d) Mrutyunjay Mohapatra
Explanation: Dr. Mrutyunjay Mohapatra, Director General of Meteorology at the India Meteorological Department (IMD), was honoured with the United Nations Sasakawa Award 2025 for Disaster Risk Reduction. He is widely recognised for his significant contributions to tropical cyclone forecasting and early warning systems, helping reduce casualties from cyclones.
9. Who inaugurated the BHARATPOL online portal ?
(a) Narendra Modi (b) Amit Shah (c) Rajnath Singh (d) Nirmala Sitharaman
Ans: (b) Amit Shah
Explanation: The portal was launched by the Union Home Minister.
10. In Union Budget 2025–26, the KCC limit was increased to:
(a) 4 lakh (b) 5 lakh (c) 6 lakh (d) 7 lakh
Ans: (b) 5 lakh
Explanation: Kisan Credit Card limit was raised to ₹5 lakh.
11. How many sportspersons received the Major Dhyan Chand Khel Ratna Award 2024 ?
(a) 2 (b) 3 (c) 4 (d) 5
Ans: (c) 4
Explanation: Four sportspersons were awarded in January 2025.
12. Coco Gauff belongs to which country ?
(a) Canada (b) Australia (c) United States (d) France
Ans: (c) United States
Explanation: Coco Gauff is an American tennis player.
13. Who received the Sahitya Akademi Yuva Puraskar 2025 for “Phir Ugna”?
(a) Anima Toppo (b) Vandana Tete (c) Jacinta Kerketta (d) Parvati Tirkey
Ans: (d) Parvati Tirkey
Explanation: Parvati Tirkey, a Hindi-language poet from the tribal community of Jharkhand, won the Sahitya Akademi Yuva Puraskar 2025 for her poetry collection Phir Ugna. The award was announced by Sahitya Akademi on June 18, 2025, recognising her outstanding contribution to contemporary Hindi literature
14. How many para-athletes received the Arjuna Award 2025 ?
(a) 6 (b) 8 (c) 17 (d) 11
Ans: (c) 17
Explanation: Out of 32 awardees, 17 were para-athletes.
15. For fertilization, pollen grain must reach which part of the flower ?
(a) Ovary (b) Anther (c) Stigma (d) Sepal
Ans: (c) Stigma
Explanation: Pollination occurs when pollen lands on stigma.
16. Image formed when object is between F and 2F of a convex lens:
(a) Between F and lens (b) At 2F (c) Beyond 2F (d) At infinity
Ans: (c) Beyond 2F
Explanation: Image is real, inverted and magnified.
17. Bleaching powder is prepared by:
(a) Electrolysis (b) Oxidation (c) Passing chlorine over dry slaked lime (d) Neutralization
Ans: (c) Passing chlorine over dry slaked lime
18. In which tissue are cell walls lignified ?
(a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) Xylem
Ans: (c) Sclerenchyma
19. Why is tungsten used as filament ?
(a) Low resistance (b) Low melting point (c) High melting point (d) Cheap metal
Ans: (c) High melting point
20. Which Act was used to regulate foreigners in India ?
(a) Citizenship Act (b) Foreigners Act, 1946 (c) Immigration Bill, 2025 (d) Immigration Act
Ans: (b) Foreigners Act, 1946