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# 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

Practice:

Practice 4500+ Solved Questions for RRB NTPC

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Question 1: Echo is heard when the reflecting surface is

a) Of Less Volume

b) Of Large Area

c) Of Less Area

d) Of Large Volume

Question 2: The Swine Flu virus is denoted by

a) $H_{1}N_{5}$

b) $N_{1}H_{2}$

c) $H_{1}N_{1}$

d) $H_{5}N_{1}$

Question 3: For the Implantation of Ovum in the ovaries, the hormone produced is

a) Oxytocin

b) Prolactin

c) Progesterone

d) None of these

Question 4: If the length of a simple pendulum is doubled, its time period will

a) Increase

b) Decrease

c) Remain Constant

d) None of these

Question 5: Which type of agriculture in India is called eco – friendly ?

a) Carbonic Cultivation

b) High yield agriculture

c) Shift Cultivation

d) Glass house agriculture

Question 6: The process of manufacturing of soap is called

a) Ion Exchange

b) Alphonation

c) Saponification

d) Steam Distillation

Question 7: Enzymes are ……….. that act as catalysts within the living cells.

a) vitamins

b) proteins

c) carbohydrates

d) calcium

Question 8: Which electrode acts as anode in a Daniell cell?

a) Zinc

b) Copper

c) Aluminium

d) Carbon

Question 9: Which cell organelle has its own DNA?

a) Mitochondria

b) Lysosomes

c) Centrosomes

d) Plastids

Question 10: The metal which can be deformed permanently by heat and pressure is called a

a) Thermoplastic

b) Thermoset

c) Chemical compound

d) Polymer

Question 11: In the field of information and communication technology, what is the full form of FDD ?

a) Folder Disk Drive

b) Floppy Disk Drive

c) Folder Data Drive

d) Floppy Data Drive

Question 12: ……….. is called ‘the power house of the cell’.

a) Cell membrane

b) Nucleus

c) Mitochondria

d) Golgi bodies

Question 13: The Bacille Calmette-Guerin vaccine (popularly called BCG vaccine) is a vaccine to prevent which of these diseases?

a) Polio

b) Tuberculosis

c) Jaundice

d) Typhoid

Question 14: Mushrooms and other micro organisms feed on dead plant and animal tissues and convert them into ………..

a) Sod

b) Peat

c) Clod

d) Humus

Question 15: Which of the following animals hibernates?

a) Tiger

b) Bat

c) Jackal

d) Deer

Question 16: Name the tissue that transports food to various parts of a plant.

a) Parenchyma

b) Sclerenchyma

c) Xylem

d) Phloem

Question 17: Which element is used for making solar cells?

a) Silicon

b) Sodium

c) Silver

d) Sulphur

Question 18: Nettle plants which grow in the wild protect themselves using:

a) hair

b) thorns

c) smell

d) Spray

Question 19: Histology is the study of :

a) Bones

b) Coins

c) Tissues

d) History

Question 20: Small-pox is a deadly and highly contagious

a) Bacterial disease

b) Viral disease

c) fungal disease

d) Vitamin deficiency disease

Question 21: VU2SAT is also called as?

a) EDUSAT

b) HAMSAT

c) CARTOSAT – 2

d) METSAT

Question 22: The first Indian communication satellite was

a) Aryabhatta

c) Apple

d) Chandrayaan-I

Question 23: INSAT-3D the meteorological Satellite with advanced weather monitoring payloads was launched in

a) 2012

b) 2013

c) 2014

d) 2015

Question 24: _____ gases trap heat in the atmosphere which makes the Earth warmer, causing global warming.

a) Greenhouse

b) Nobel

c) Elemental

d) Compound

Question 25: During photosynthesis, green plants use energy from sunlight to synthesise _____ from carbon dioxide and water

a) fructose

b) sucrose

c) galactose

d) glucose

Question 26: Which cell organelle does the function muscular contraction in animals?

a) Ribosome

b) Centrosome

c) Vacoule

d) Myofibril

Question 27: The green plants in a terrestrial ecosystem capture about ………. of the energy of sunlight.

a) 4%

b) 2%

c) 1%

d) 3%

Question 28: In humans, each cell normally contains ……….. pairs of chromosomes.

a) 22

b) 24

c) 23

d) 21

Question 29: Which non-nucleated cells in plants transport nutrients?

a) Sieve cells

b) Guard cells

c) Transfer cells

d) Epidermal cells

Question 30: ………… are called suicidal bags of the cell.

a) Ribosomes

b) Golgi Apparatus

c) Lysosomes

d) Mitochondria

Question 31: Which of the following are flowerless plants that produce cones and seeds in which seeds are not encased within an ovary?

a) Bryophytes

b) Gymnosperms

c) Hydrophytes

d) Angiosperms

Question 32: The name of the space shuttle, which carried the Indian born Kalpana Chawla into space was

a) Columbia

b) Challenger

c) Atlantis

d) Endeavour

Question 33: The following metal is used in storage batteries–

a) Iron

b) Copper

c) Zinc

Question 34: Coins are studied in which of the following subjects ?

a) Archaeology

b) Historiography

c) Numismatics

d) Epigraphy

Question 35: Which of the following human hormones contains iodine ?

a) Oxytocin

b) Progesterone

d) Thyroxine

Question 36: A body is floating in water at 4°C If temperature reaches 100°C then the body will ?

a) sink fully

b) float freely

c) have some more part of itself submerged under water

d) have no change in its position

Question 37: How much water is contained in our body by mass?

a) 65%

b) 70%

c) 60%

d) None of these

Question 38: When sun-light passe through a glass prism, which of the following colours refracts the most?

a) Blue

b) Red

c) Orange

d) Green

Question 39: Colour blindness is related to

a) heredity

b) blood pressure

c) digestive system

d) respiratory system

Question 40: The angle subtended at the center of a circle by a major arc will be

a) Right Angle

b) Acute Angle

c) Obtuse Angle

d) Complementary Angle

Question 41: The model of DNA structure was founded by

a) Priestley

b) Morgan

c) Hargobind Khurana

d) Watson and Crick

Question 42: Which of the following gases is chiefly found in biogas ?

a) Nitrogen

b) Hydrogen

c) Methane

d) Ethane

Question 43: Which of the following crops does need water during sowing it ?

a) Wheat

b) Barley

d) Maize

Question 44: Which of the following soils is suitable for the production of cotton

a) Laterite Soil

b) Red Soil

c) Black Soil

d) Alluvial Soil

Question 45: Which is India’s first defense satellite?

a) INSAT 2B

b) GSAT-7

c) GSAT 6

d) IRS-1A

Question 46: The other term for genetic engineering is:

a) DNA fingerprinting

b) DNA editing

c) Recombinant DNA technology

d) Gene therapy

Question 47: What is the technology used in a compact disc?

a) Electrical

b) Laser

c) Electro magnetic

d) Aeronautical

Question 48: Who designed the world’s lightest satellite ‘Kalamsat’, which NASA launched and set a
new world record?

a) Riyaz Sharook

b) Shawna Pandya

c) Rifath Sharook

Question 49: The waves used in radar systems are _______ waves.

a) ultraviolet

b) infrared

c) micro

Question 50: The atmosphere of Mars is mostly composed of ………..

a) Ammonia

b) Carbon dioxide

c) Oxygen

d) Hydrogen

Lead is most commonly used in storage batteries