Home › BPSC › 2022 › Science & Technology
BPSC 2022 — Science & Technology Questions with Answers
All 69 Science & Technology previous-year questions from BPSC 2022, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.
Practice Science & Technology as a timed test →- Q1.Technology Policy
Write short answer: What do you understand by Indigenization of Technology in the Indian context?
- Q2.Nuclear Energy
Write short answer: Explain why it is necessary for India to expand its nuclear energy program to meet the growing energy needs. Also write the precautions needed in the nuclear program.
- Q3.Information Technology
Write short answer: Write the difference between internet and intranet. Explain how internet and intranet have changed the life of human beings.
- Q4.Applied Technology
Write short answer: Write a note on Technology-driven modernization of Bihar.
- Q5.Nanotechnology
Write short answer: Discuss the role of nanotechnology in the health sector. Mention with example how it is used for treatment of various diseases.
- Q6.Cyber Security
Along with the advancements in the field of computer and communication technology, India has faced severe data threat both in public and government domain. Discuss the various areas of cyber threat and the measures taken by the Central Government in each of them with the help of existing technology.
- Q7.Water Technology
With the mission of providing potable water to every household on the one hand and water scarcity in the face of growing population on the other, throw light on the role being played by the Indian Government for water conservation. Also discuss the scientific and technological developments which have been used by the State of Bihar in fulfilling the objectives of the Central Government.
- Q8.Astronomy
Which is the principal celestial body of the solar system?
- a)Jupiter
- b)Saturn
- c)Sun
- d)Earth
- e)None of the above / More than one of the above
- Q9.Chemistry
Which elements are abundant in the formation of the Earth's inner layer NIFE?
- a)Silica and Magnesium
- b)Basalt and Silica
- c)Nickel and Ferum
- d)Silica and Aluminium
- e)None of the above / More than one of the above
- Q10.Physics — Optics
Which type of lens is used in a magnifying glass?
- a)Plano-concave
- b)Convex lens
- c)Convex mirror
- d)Concave
- e)None of the above / More than one of the above
- Q11.Physics
The paramagnetic (paramagnetic) principle of magnetism is exhibited by which of the following?
- a)Mercury
- b)Iron
- c)Platinum
- d)Nickel
- e)None of the above / More than one of the above
- Q12.Physics
Which fundamental particles are present in the nucleus of an atom?
- a)Electron and Proton
- b)Proton and Neutron
- c)Only Electron
- d)Electron and Neutron
- e)None of the above / More than one of the above
- Q13.Chemistry
The metallurgical process under which metal is found in a mixed state is called
- a)Roasting
- b)Calcination
- c)Froth flotation
- d)Smelting
- e)None of the above / More than one of the above
- Q14.Chemistry
Which of the following are the components of brass?
- a)Iron and Zinc
- b)Copper and Nickel
- c)Iron and Copper
- d)Zinc and Copper
- e)None of the above / More than one of the above
- Q15.Chemistry
Which of the following is called 'unslaked lime'?
- a)CaCO2
- b)Ca(OH)2
- c)CaCl2
- d)CaO
- e)None of the above / More than one of the above
- Q16.Chemistry
Which of the following changes occurs in the weight of rusted iron?
- a)It first decreases and then increases
- b)It first increases and then decreases
- c)It remains uniform
- d)It increases for a long time
- e)None of the above / More than one of the above
- Q17.Chemistry
Which of the following is also called 'white metal'?
- a)Rhodium
- b)Platinum
- c)Palladium
- d)Nickel
- e)None of the above / More than one of the above
- Q18.Chemistry
Consider the following statements regarding 'noble metals': 1. 'Noble metals' are found in pure form in nature. 2. Uranium and lead are examples of noble metals. Which of the above statement(s) is/are correct?
- a)Only 2
- b)Both 1 and 2
- c)Brass is also a noble metal.
- d)Only 1
- e)None of the above / More than one of the above
- Q19.Chemistry — Solutions
Consider the following statements: 1. When salt is dissolved in pure water, the boiling point of water increases and the freezing point of water decreases. 2. When methyl alcohol is added to water, the boiling point of water decreases. Which of the above statement(s) is/are correct?
- a)Only 1
- b)Only 2
- c)Both 1 and 2
- d)Salt and methyl alcohol behave similarly.
- e)None of the above / More than one of the above
- Q20.Chemistry
Which of the following is a major component of biogas?
- a)Propene
- b)Butane
- c)Ethene
- d)Methane
- e)None of the above / More than one of the above
- Q21.Chemistry
Due to which of the following chemicals does a firecracker show a bright red color when it bursts?
- a)Sodium
- b)Sulfur
- c)Magnesium
- d)Strontium
- e)None of the above / More than one of the above
- Q22.Biology
What are salt-loving plants called?
- a)Mesophytes
- b)Glycophytes
- c)Halophytes
- d)Xerophytes
- e)None of the above / More than one of the above
- Q23.Biology
Which of the following is not found in fungal plants?
- a)Carbon dioxide
- b)Chlorophyll
- c)Sunlight
- d)Oxygen
- e)None of the above / More than one of the above
- Q24.Biology
What is the correct definition of 'pollination'?
- a)Germination of pollen grain
- b)Reaching of pollen tube to ovule
- c)Insects reaching flowers
- d)Transfer of pollen grain from anther to stigma
- e)None of the above / More than one of the above
- Q25.Biology
Plants primarily obtain their nutrients from?
- a)Atmosphere
- b)Light
- c)Soil
- d)Chlorophyll
- e)None of the above / More than one of the above
- Q26.Biology
Pine, fir, spruce, cedar, larch and cypress are famous timber-producing plants, many of which are also found in the hilly regions of India. What are all these called?
- a)Gymnosperms
- b)Monocotyledons
- c)Dicotyledons
- d)Angiosperms
- e)None of the above / More than one of the above
- Q27.Biology
Which of the following pairs is correctly matched?
- a)Tuberculosis—ATS
- b)Tetanus—BCG
- c)Malaria—Chloroquine
- d)Scurvy—Thiamine
- e)None of the above / More than one of the above
- Q28.Biology
An animal without red blood cells is
- a)Earthworm
- b)Snake
- c)Peacock
- d)Frog
- e)None of the above / More than one of the above
- Q29.Biology
After the decomposition of carbohydrates, what is finally formed?
- a)Glycerol
- b)Glucose
- c)Maltose
- d)Amino acid
- e)None of the above / More than one of the above
- Q30.Biology
Most enzymes are
- a)Fats
- b)Acids
- c)Bases
- d)Proteins
- e)None of the above / More than one of the above
- Q31.Biology — Immunology
Which scientist/physician first started vaccination?
- a)Robert Koch
- b)Élie Metchnikoff
- c)Edward Jenner
- d)Joseph Lister
- e)None of the above / More than one of the above
- Q32.Physics
What is the working principle of a washing machine?
- a)Diffusion
- b)Centrifugation
- c)Dialysis
- d)Reverse Osmosis
- e)None of the above / More than one of the above
- Q33.Physics — Optics
In which of the following media will the speed of light be minimum?
- a)Vacuum (Zero)
- b)Air
- c)Glass
- d)Water
- e)None of the above / More than one of the above
- Q34.Physics
Which of the following is NOT a 'vector quantity'?
- a)Velocity
- b)Torque
- c)Displacement
- d)Speed
- e)None of the above / More than one of the above
- Q35.Physics
If the rotational speed (rotation) of the Earth is increased, then the weight of a body on the equator will
- a)decrease
- b)not change
- c)become double
- d)increase
- e)None of the above / More than one of the above
- Q36.Physics
Who first defined motion?
- a)Newton
- b)Kepler
- c)Ptolemy
- d)Galileo
- e)None of the above / More than one of the above
- Q37.Chemistry
According to which law, at the same temperature and pressure, the number of molecules in a definite volume of all gases is the same?
- a)Graham's Law
- b)Pascal's Law
- c)Avogadro's Law
- d)Coriolis Effect
- e)None of the above / More than one of the above
- Q38.Physics
Which of these scientists presented the 'Theory of Relativity'?
- a)Isaac Newton
- b)Stephen Hawking
- c)Marie Curie
- d)Albert Einstein
- e)None of the above / More than one of the above
- Q39.Physics
Due to a change in temperature in a conductor, there is a change in potential in it. This phenomenon is called
- a)Joule effect
- b)Seebeck effect
- c)Peltier effect
- d)Thomson effect
- e)None of the above / More than one of the above
- Q40.Space
Which country launched its first 'Arktika-M' satellite to monitor the Arctic climate?
- a)China
- b)Russia
- c)India
- d)Japan
- e)None of the above / More than one of the above
- Q41.Physics
A person standing in front of a mirror finds his image larger than himself. This implies that the mirror is
- a)concave
- b)plane
- c)convex
- d)cylindrical with bulging side outwards
- e)None of the above/More than one of the above
- Q42.Physics
A fan produces a feeling of comfort during the hot weather because
- a)fan supplies cool air
- b)our body radiates more heat in air
- c)conductivity of air increases
- d)our perspiration evaporates rapidly
- e)None of the above/More than one of the above
- Q43.Physics
Twinkling of stars in clear sky during nighttime can be explained with
- a)refraction of light
- b)reflection of light
- c)polarization of light
- d)interference of light
- e)None of the above/More than one of the above
- Q44.Physics
Hydrogen bomb is based on the principle of
- a)controlled fusion reaction
- b)uncontrolled fusion reaction
- c)controlled fission reaction
- d)uncontrolled fission reaction
- e)None of the above/More than one of the above
- Q45.Physics
Food gets cooked faster in a pressure cooker because
- a)water starts boiling at low temperature due to high pressure
- b)water starts boiling at high temperature due to high pressure
- c)water starts boiling at low temperature due to low pressure
- d)water starts boiling at high temperature due to low pressure
- e)None of the above/More than one of the above
- Q46.Physics
If the doors of a refrigerator are left open for few hours, then the room temperature will
- a)decrease
- b)increase
- c)remain the same
- d)decrease only in the area in the vicinity of the refrigerator
- e)None of the above/More than one of the above
- Q47.Physics
A piece of ice is floating in a beaker containing water up to its brim. When whole of the ice melts
- a)the water will spill on the floor
- b)the level of water will come down in the beaker
- c)the level of water will first fall and then it will spill out of the beaker
- d)the water level will not change
- e)None of the above/More than one of the above
- Q48.Physics
Which of the following is not correctly matched?
- a)Voltmeter—Potential difference
- b)Ammeter—Electric current
- c)Potentiometer—Electromotive force
- d)Galvanometer—Electric resistance
- e)None of the above/More than one of the above
- Q49.Physics
If a feather, a rubber ball and a wooden ball are falling freely simultaneously from the same height in vacuum, then
- a)the feather will reach at the ground first
- b)the rubber ball will reach at the ground first
- c)the wooden ball will reach at the ground first
- d)all the three will reach at the ground together
- e)None of the above/More than one of the above
- Q50.Physics
When a soap film on the water is seen in the daytime, it shows beautiful colours. This phenomenon is due to
- a)diffraction of light
- b)refraction of light
- c)polarization of light
- d)interference of light
- e)None of the above/More than one of the above
- Q51.Physics
The mass number of a nucleus is
- a)the sum of the numbers of neutrons and protons
- b)the total mass of neutrons and protons
- c)always more than the atomic weight
- d)always less than its atomic number
- e)None of the above/More than one of the above
- Q52.Chemistry
Which of the following is the main ingredient of cement?
- a)Limestone
- b)Silica clay
- c)Gypsum
- d)Ash
- e)None of the above/More than one of the above
- Q53.Chemistry
Isotopes of an element differ in
- a)the number of protons
- b)the mass number
- c)the number of electrons
- d)the atomic number
- e)None of the above/More than one of the above
- Q54.Chemistry
The temperature point at which solid, liquid and gaseous states may stay together is known as
- a)boiling point
- b)melting point
- c)freezing point
- d)triple point
- e)None of the above/More than one of the above
- Q55.Chemistry
The most important ore of aluminium is
- a)bauxite
- b)calamine
- c)calcite
- d)galena
- e)None of the above/More than one of the above
- Q56.Chemistry
Which among the following solutions has pH value more than 7?
- a)Buffer solution
- b)Basic solution
- c)Acidic solution
- d)Neutral solution
- e)None of the above/More than one of the above
- Q57.Chemistry
Which among the following is an incorrect option?
- a)Atom is electrically neutral due to presence of protons and electrons inside the nucleus.
- b)Electrons are negatively charged and have negligible mass.
- c)Atomic number is the number of protons in an atom of an element.
- d)Isotopes are useful as nuclear fuel, in medical field, in carbon dating, etc.
- e)None of the above/More than one of the above
- Q58.Chemistry
Select the incorrect statement out of the following.
- a)Cotton is suitable for use as clothing in summer because it absorbs moisture.
- b)Polycarbonate is used for making CDs.
- c)Acrylic is also called artificial silk as it is prepared from cotton but has shine like silk.
- d)Teflon is used for coating non-stick kitchenwares.
- e)None of the above/More than one of the above
- Q59.Chemistry
Which of the following statements about graphite and diamond is true?
- a)They have the same crystal structure.
- b)They have the same hardness.
- c)They have the same electrical conductivity.
- d)They can undergo the same chemical reaction.
- e)None of the above/More than one of the above
- Q60.Chemistry
Which of the following is the major constituent of the liquefied petroleum gas?
- a)Methane
- b)Ethane
- c)Propane
- d)Butane
- e)None of the above/More than one of the above
- Q61.Biology
Water passes from the soil into the roots by a physical process called
- a)diffusion
- b)transpiration
- c)absorption
- d)osmosis
- e)None of the above/More than one of the above
- Q62.Biology
In the nighttime, it is advised not to sleep under trees because
- a)they liberate less amount of oxygen
- b)they liberate harmful gases at night
- c)they liberate carbon dioxide
- d)they liberate carbon monoxide
- e)None of the above/More than one of the above
- Q63.Biology
Insectivorous plants grow in soil deficient in
- a)water
- b)magnesium
- c)nitrogen
- d)calcium
- e)None of the above/More than one of the above
- Q64.Biology
Stem of a plant helps in distributing food to all parts of the plant. It also helps in
- a)storing the food
- b)shaping the plant
- c)respiration
- d)photosynthesis
- e)None of the above/More than one of the above
- Q65.Biology
In transfusion, blood must be compatible not only in blood type but also in
- a)Rh factor
- b)the number of white cells
- c)the number of red cells
- d)race of donor and recipient
- e)None of the above/More than one of the above
- Q66.Biology
Pituitary gland is located in
- a)intestine
- b)liver
- c)kidney
- d)brain
- e)None of the above/More than one of the above
- Q67.Biology
Which of the following rays/waves are used to know the growth of fetus in the womb?
- a)X-rays
- b)Microwaves
- c)Ultrasonic waves
- d)Ultraviolet rays
- e)None of the above/More than one of the above
- Q68.Biology
The universal acceptor blood group is
- a)A
- b)B
- c)AB
- d)O
- e)None of the above/More than one of the above
- Q69.Biology
Pneumonia is an infection of
- a)nerve
- b)blood
- c)skin
- d)lungs
- e)None of the above/More than one of the above
BPSC 2022 — other subjects
Science & Technology — other years
Ready to test yourself on BPSC 2022?
Start the timed mock free →