Top-50 RRB NTPC Science And Technology Questions Part-2 PDF
Download Top-50 Expected science and technology questions and answers for RRB NTPC Stage-1 exam. Go through the video of Repeatedly asked and most important RRB NTPC Politics and Governance questions. These questions are based on previous year questions in Railways and other Govt exams
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Question 1:Â Echo is heard when the reflecting surface is
a)Â Of Less Volume
b)Â Of Large Area
c)Â Of Less Area
d)Â Of Large Volume
Question 2:Â The Swine Flu virus is denoted by
a)Â $H_{1}N_{5}$
b)Â $N_{1}H_{2}$
c)Â $H_{1}N_{1}$
d)Â $H_{5}N_{1}$
Question 3:Â For the Implantation of Ovum in the ovaries, the hormone produced is
a)Â Oxytocin
b)Â Prolactin
c)Â Progesterone
d)Â None of these
Question 4:Â If the length of a simple pendulum is doubled, its time period will
a)Â Increase
b)Â Decrease
c)Â Remain Constant
d)Â None of these
Question 5:Â Which type of agriculture in India is called eco – friendly ?
a)Â Carbonic Cultivation
b)Â High yield agriculture
c)Â Shift Cultivation
d)Â Glass house agriculture
Question 6:Â The process of manufacturing of soap is called
a)Â Ion Exchange
b)Â Alphonation
c)Â Saponification
d)Â Steam Distillation
Question 7:Â Enzymes are ……….. that act as catalysts within the living cells.
a)Â vitamins
b)Â proteins
c)Â carbohydrates
d)Â calcium
Question 8:Â Which electrode acts as anode in a Daniell cell?
a)Â Zinc
b)Â Copper
c)Â Aluminium
d)Â Carbon
Question 9:Â Which cell organelle has its own DNA?
a)Â Mitochondria
b)Â Lysosomes
c)Â Centrosomes
d)Â Plastids
Question 10:Â The metal which can be deformed permanently by heat and pressure is called a
a)Â Thermoplastic
b)Â Thermoset
c)Â Chemical compound
d)Â Polymer
Question 11:Â In the field of information and communication technology, what is the full form of FDD ?
a)Â Folder Disk Drive
b)Â Floppy Disk Drive
c)Â Folder Data Drive
d)Â Floppy Data Drive
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Question 12: ……….. is called ‘the power house of the cell’.
a)Â Cell membrane
b)Â Nucleus
c)Â Mitochondria
d)Â Golgi bodies
Question 13:Â The Bacille Calmette-Guerin vaccine (popularly called BCG vaccine) is a vaccine to prevent which of these diseases?
a)Â Polio
b)Â Tuberculosis
c)Â Jaundice
d)Â Typhoid
Question 14:Â Mushrooms and other micro organisms feed on dead plant and animal tissues and convert them into ………..
a)Â Sod
b)Â Peat
c)Â Clod
d)Â Humus
Question 15:Â Which of the following animals hibernates?
a)Â Tiger
b)Â Bat
c)Â Jackal
d)Â Deer
Question 16:Â Name the tissue that transports food to various parts of a plant.
a)Â Parenchyma
b)Â Sclerenchyma
c)Â Xylem
d)Â Phloem
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Question 17:Â Which element is used for making solar cells?
a)Â Silicon
b)Â Sodium
c)Â Silver
d)Â Sulphur
Question 18:Â Nettle plants which grow in the wild protect themselves using:
a)Â hair
b)Â thorns
c)Â smell
d)Â Spray
Question 19:Â Histology is the study of :
a)Â Bones
b)Â Coins
c)Â Tissues
d)Â History
Question 20:Â Small-pox is a deadly and highly contagious
a)Â Bacterial disease
b)Â Viral disease
c)Â fungal disease
d)Â Vitamin deficiency disease
Question 21:Â VU2SAT is also called as?
a)Â EDUSAT
b)Â HAMSAT
c)Â CARTOSAT – 2
d)Â METSAT
Question 22:Â The first Indian communication satellite was
a)Â Aryabhatta
b)Â Bhaskara-I
c)Â Apple
d)Â Chandrayaan-I
Question 23:Â INSAT-3D the meteorological Satellite with advanced weather monitoring payloads was launched in
a)Â 2012
b)Â 2013
c)Â 2014
d)Â 2015
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Question 24:Â _____ gases trap heat in the atmosphere which makes the Earth warmer, causing global warming.
a)Â Greenhouse
b)Â Nobel
c)Â Elemental
d)Â Compound
Question 25:Â During photosynthesis, green plants use energy from sunlight to synthesise _____ from carbon dioxide and water
a)Â fructose
b)Â sucrose
c)Â galactose
d)Â glucose
Question 26:Â Which cell organelle does the function muscular contraction in animals?
a)Â Ribosome
b)Â Centrosome
c)Â Vacoule
d)Â Myofibril
Question 27:Â The green plants in a terrestrial ecosystem capture about ………. of the energy of sunlight.
a)Â 4%
b)Â 2%
c)Â 1%
d)Â 3%
Question 28:Â In humans, each cell normally contains ……….. pairs of chromosomes.
a)Â 22
b)Â 24
c)Â 23
d)Â 21
Question 29:Â Which non-nucleated cells in plants transport nutrients?
a)Â Sieve cells
b)Â Guard cells
c)Â Transfer cells
d)Â Epidermal cells
Question 30:Â ………… are called suicidal bags of the cell.
a)Â Ribosomes
b)Â Golgi Apparatus
c)Â Lysosomes
d)Â Mitochondria
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Question 31:Â Which of the following are flowerless plants that produce cones and seeds in which seeds are not encased within an ovary?
a)Â Bryophytes
b)Â Gymnosperms
c)Â Hydrophytes
d)Â Angiosperms
Question 32:Â The name of the space shuttle, which carried the Indian born Kalpana Chawla into space was
a)Â Columbia
b)Â Challenger
c)Â Atlantis
d)Â Endeavour
Question 33:Â The following metal is used in storage batteries–
a)Â Iron
b)Â Copper
c)Â Zinc
d)Â Lead
Question 34:Â Coins are studied in which of the following subjects ?
a)Â Archaeology
b)Â Historiography
c)Â Numismatics
d)Â Epigraphy
Question 35:Â Which of the following human hormones contains iodine ?
a)Â Oxytocin
b)Â Progesterone
c)Â Adrenalin
d)Â Thyroxine
Question 36: A body is floating in water at 4°C If temperature reaches 100°C then the body will ?
a)Â sink fully
b)Â float freely
c)Â have some more part of itself submerged under water
d)Â have no change in its position
Question 37:Â How much water is contained in our body by mass?
a)Â 65%
b)Â 70%
c)Â 60%
d)Â None of these
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Question 38:Â When sun-light passe through a glass prism, which of the following colours refracts the most?
a)Â Blue
b)Â Red
c)Â Orange
d)Â Green
Question 39:Â Colour blindness is related to
a)Â heredity
b)Â blood pressure
c)Â digestive system
d)Â respiratory system
Question 40:Â The angle subtended at the center of a circle by a major arc will be
a)Â Right Angle
b)Â Acute Angle
c)Â Obtuse Angle
d)Â Complementary Angle
Question 41:Â The model of DNA structure was founded by
a)Â Priestley
b)Â Morgan
c)Â Hargobind Khurana
d)Â Watson and Crick
Question 42:Â Which of the following gases is chiefly found in biogas ?
a)Â Nitrogen
b)Â Hydrogen
c)Â Methane
d)Â Ethane
Question 43:Â Which of the following crops does need water during sowing it ?
a)Â Wheat
b)Â Barley
c)Â Paddy
d)Â Maize
Question 44:Â Which of the following soils is suitable for the production of cotton
a)Â Laterite Soil
b)Â Red Soil
c)Â Black Soil
d)Â Alluvial Soil
Question 45:Â Which is India’s first defense satellite?
a)Â INSAT 2B
b)Â GSAT-7
c)Â GSAT 6
d)Â IRS-1A
Question 46:Â The other term for genetic engineering is:
a)Â DNA fingerprinting
b)Â DNA editing
c)Â Recombinant DNA technology
d)Â Gene therapy
Question 47:Â What is the technology used in a compact disc?
a)Â Electrical
b)Â Laser
c)Â Electro magnetic
d)Â Aeronautical
Question 48: Who designed the world’s lightest satellite ‘Kalamsat’, which NASA launched and set a
new world record?
a)Â Riyaz Sharook
b)Â Shawna Pandya
c)Â Rifath Sharook
d)Â Madhav Dhekane
Question 49:Â The waves used in radar systems are _______ waves.
a)Â ultraviolet
b)Â infrared
c)Â micro
d)Â radio
Question 50:Â The atmosphere of Mars is mostly composed of ………..
a)Â Ammonia
b)Â Carbon dioxide
c)Â Oxygen
d)Â Hydrogen
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Answers & Solutions:
1) Answer (B)
2) Answer (C)
3) Answer (C)
4) Answer (A)
5) Answer (B)
6) Answer (C)
7) Answer (B)
8) Answer (A)
9) Answer (A)
10) Answer (B)
11) Answer (B)
12) Answer (C)
13) Answer (B)
14) Answer (D)
15) Answer (B)
16) Answer (D)
17) Answer (A)
18) Answer (A)
19) Answer (C)
20) Answer (B)
21) Answer (B)
22) Answer (C)
23) Answer (B)
24) Answer (A)
25) Answer (D)
26) Answer (D)
27) Answer (C)
28) Answer (C)
29) Answer (A)
30) Answer (C)
31) Answer (B)
32) Answer (A)
33) Answer (D)
Lead is most commonly used in storage batteries
34) Answer (C)
35) Answer (B)
36) Answer (C)
37) Answer (B)
38) Answer (A)
39) Answer (A)
40) Answer (C)
41) Answer (D)
42) Answer (C)
43) Answer (C)
44) Answer (C)
45) Answer (B)
46) Answer (C)
47) Answer (B)
48) Answer (A)
49) Answer (C)
50) Answer (B)
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