Science And Technology (Railway)

Total Questions: 60

11. SAGA-220 was developed by Indian Space Research Organization. What is SAGA-220? [RRB NTPC CBT-1 Exam, 23.01.2021 (Shift-I)]

(1) Missile
(2) Super Computer
(3) Satellite
(4) Pacemaker

Correct Answer: (2) Super Computer

Solution:SAGA-220 is a supercomputer built by the Indian Space Research Organisation.

• It was unveiled on 2 May 2011.

• It has been surpassed by the Pratyush supercomputer with a maximum theoretical speed of 220 Tera Flops.

12. CSIR stands for: [RRB NTPC CBT-1 Exam, 23.01.2021 (Shift-I)]

(1) Council of Space and Invention Research
(2) Council of Scientific and Industrial Research
(3) Council of Scientific and Indian Research
(4) Committee of Science and Iron Research

Correct Answer: (2) Council of Scientific and Industrial Research

Solution:The Council of Scientific and Industrial Research abbreviated (CSIR) was established by the Government of India in September 1942.

• It has emerged as the largest research and development organisation in India.

13. The largest nuclear power station in India is in___________. [RRB NTPC CBT-1 Exam, 25.01.2021 (Shift-I)]

(1) Mahabaleshwar
(2) Tarapur
(3) Aurangabad
(4) Panchgani

Correct Answer: (2) Tarapur

Solution:The Tarapur Atomic Power Station in Maharashtra was India's first atomic power project when it began operations on 28 October, 1969.

• It relies on boiling water reactors (BWRs) for power generation.

• BWRs are nuclear reactors using water as a coolant and moderator, with steam being produced in the reactor that is then enriched with uranium oxide.

14. The mission on Nano Science and Technology (Nano Mission) was launched in__________. [RRB NTPC CBT-1 Exam, 25.01.2021 (Shift-I)]

(1) 2006
(2) 2007
(3) 2009
(4) 2010

Correct Answer: (2) 2007

Solution:The Government of India launched the Nano Mission in 2007 as an 'umbrella capacity-building programme'.

• It is being implemented by the Department of Science and Technology (DST) under the Ministry of Science and Technology.

15. India's first beam weapon KALI-5000 was developed by: [RRB NTPC CBT-1 Exam, 25.01.2021 (Shift-I)]

(1) DRDO & BARC
(2) ISRO & DRDO
(3) BEL & ISRO
(4) CDAC

Correct Answer: (1) DRDO & BARC

Solution:KALI stands for Kilo Ampere Linear Injector.

• The weapon (Kali-5000) is designed so that it can be used to destroy missiles and aircrafts through soft-kill.

• It has been developed by the Defence Research and Development Organization (DRDO) and the Bhabha Atomic Research Centre (BARC).

16. Which of the following missile developed by DRDO is an air to air missile? [RRB NTPC CBT-1 Exam, 27.01.2021 (Shift-II)]

(1) Akash
(2) Prithvi
(3) Astra
(4) Agni

Correct Answer: (3) Astra

Solution:ASTRA is a Beyond Visual Range (BVR) class of Air-to-Air Missile (AAM) system designed to be mounted on fighter aircraft.

• The ASTRA Mk-I Weapon System integrated with SU-30 Mk-I aircraft is being inducted into the Indian Air Force (IAF).

17. Which is the last satellite launched by ISRO in year 2020? [ RRB NTPC CBT-1 Exam, 27.01.2021 (Shift-II)]

(1) CMS-01
(2) Astrosat
(3) Gaganyaan
(4) Chandrayaan-2

Correct Answer: (1) CMS-01

Solution:In December 2020, Indian Space Research Organisation (ISRO) has launched a communications satellite, CMS-01, on board its Polar Satellite Launch Vehicle (PSLVC50) from the Satish Dhawan Space Centre, Andhra Pradesh.

• CMS-01 is a communications satellite envisaged for providing services in extended C Band frequency spectrum.

18. Name the geostationary communication satellite launched by ISRO on board GSLV launched vehicle and especially designed for the Indian Air Force to enhance its communication capabilities. [RRB NTPC CBT-1 Exam, 03.02.2021 (Shift-I)]

(1) GSAT-6B
(2) GSAT-7B
(3) GSAT-7A
(4) GSAT-8B

Correct Answer: (3) GSAT-7A

Solution:GSAT-7A is a Kuband military communications satellite.

• It contains four solar panels that will provide 3.3 kilowatts of electric power.

• GSAT-7A, launched by ISRO meant to enhance the communication infrastructure of the Indian Air Force.

19. Which of following country has the highest number of operational nuclear reactors currently? [RRB NTPC CBT-1 Exam, 03.02.2021 (Shift-I)]

(1) India
(2) China
(3) United States
(4) France

Correct Answer: (3) United States

Solution:The USA is the world's largest producer of nuclear power, accounting for more than 30% of worldwide nuclear generation of electricity.

• The United States has the most operational nuclear reactors (96).

20. Heavy Water is so called because: [RRB NTPC CBT-1 Exam, 03.02.2021 (Shift-I)]

(1) it uses Deuterium, a heavier Isotope of hydrogen, rather than Protium.
(2) its density is three times that of normal water.
(3) it is used by the heavy industries such as steel, chemicals etc.
(4) it is used in nuclear reactors.

Correct Answer: (2) its density is three times that of normal water.

Solution:Heavy water (D₂O) is in which deuterium, a heavy isotope of hydrogen, takes the place of hydrogen.

• Deuterium, the hydrogen isotope with a mass double that of ordinary hydrogen, and oxygen.

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