2018 RRB Group D previous year gk questions: All shift Oneliner

Dear Aspirants, In this article I provide the complete list of 2018 RRB Group D previous year GK questions with answers in single line format which are collected from different sources also collected from aspirants who appeared 2018 RRB Group D examination. Before the RRB examination, If you practice some questions and check the RRB Group-D previous year’s exam question paper, it will be easy to score good marks.

2018 RRB Group D previous year GK Question answer One-liner

• The induction current is highest when the direction of motion of the coil is –90° relative to the magnetic field.
• The point at which the entire weight of the body may be considered as concentrated is called – the center of gravity.
• Hydra is a genus of small freshwater organisms that has the regenerative ability.
• The weight of an object on the moon is –1/6 to its weight on earth.
• The chemical reaction in which the heat is generated is called – Exothermic
• Which Hormones change the appearance of boys during puberty – Testosterone.
• Who has classified the elements based on atomic numbers – Henry Moseley
• The chemical formula of calcium hydroxide is – Ca(OH)₂
• 5 to 8% of acetic acid is called – Vinegar                                      
• The sound waves below the frequencies of audible sound is called – Infrasonic Sound
• When the satellite is revolving around the earth, it is because of the gravitational force towards the earth that acts as –a centripetal force
• A milkman mixes little Baking Soda in fresh milk to prevent the curding of milk.
• The conductor wire is coated with PVC to- prevent short circuit
• The organic compound with the formula  – Butane
• The molecular mass of O₂ is – 32
• The white color of clouds is due to -the scattering of light
• Gregory Johann Mendel is the founder of –modern genetics science.
• Sclerenchyma cells have thickened lignified walls, which make them –strong and waterproof.
• The ore of mercury is – Cinnabar.
• Two focal length lenses are used by people suffering from – Myopia And Hypermetropia.
• The S.I unit of light is –kilowatt-hour (Kwh)
• When the gametes join during sexual reproduction, they form a cell called a –Zygotes.
• The process which converts a refined metal to a more chemically stable form, such as its oxide, hydroxide, or sulfide is called-Corrosion.
• The product of force and displacement is called –Work   
• The metal which is liquid at room temperature-Mercury.
• The word atom is given by – Democritus.
• Which element does not have a fixed place in Mendeleev’s periodic table – Hydrogen.
• Energy is defined as – the rate of work or rate of energy transfer.
• The melting point of Tungsten – C
• How many atoms are there in copper molecules – 63.546 g/mol
• Newlands low of octaves is applicable up to – Calcium Atom.
• Falling freely is possible only in –Vacuum.
• Mechanical energy is the sum of –Kinetic Energy and Potential Energy.
• Protein synthesis is accomplished through a process called-Translation.
• When a metal reacts with water, it released- Hydrogen Gas
• When the ray of light travels from a denser medium to a rarer medium then the speed of light –increases and it will bends away from the normal.
• Ethanol is used in car petrol –as a fuel.
• The K.E of the particles is maximum in –Plasma.
• Goiter is caused due to the –lack of iodine.
• Why does the stone thrown towards the sky come back to the earth – Due to acceleration due to gravity(g)
• Which tissue responsible for the transport of sugar from source tissues during photosynthetic – Phloem
• A car is moving at a high speed which energy is said to be – Kinetic Energy.
• How to convert the temperature from Kelvin scale to Celsius sale – subtract the given temperature from 273.15.
• Solder is an alloy of –Lead (Pb) and Tin(sn)
• ___________is the passing on of traits from parents to their offspring – Heredity
• What energy increases at a print during its path object falling freely – Kinetic Energy
• Fish has ______Chan bens in the heart-2 (two).
• The property of a metal to be drawn into thin shuts – Malleability
• There are ____ shells in the atoms of germanium, Arsenic, selenium, and Bromine – four (4)
• The force between neutron and proton in an atom is called – Nuclear force.
• Which salts have a ph less than 7 – Ammonium Chloride.
• The strengthening tissue in a plant, formed from cells with thickened walls – Sclerenchyma.
• The function of platelet tissue in human beings – The Prevention and Control of Bleeding.
• The function of pancreas –Digestion and Blood Sugar Regulation.
• When the card hold on a glass is pushed with a finger, the coin placed in it falls in to the glass, this statement inspires the lane of –inertia.
• The weight of a person on the moon is reduced to the weight of that person on earth – 1/6.
• Baking soda solution is used for the treatment of –Bee Strings.
• The element having the same number of proton’s but a different number of neutrons is called – Isotopes
• The non-metal in liquid state – Bromine.
• Tin is found in the alloy of –Solder
• The speed of sound in air at 25°C is – 346 m/s.
• The SI unit of acceleration is -m/s²
• While, going from fluorine to chlorine and bromine to iodine, the electric negativity – Decreases.
• Uses of Galvanometer – To detect the direction of the current.
• The chemical formula of rust is –   Fe₂O₃. H₂O 
• The amount of light entering into the eye is controlled by – Pupil.
• A large group of animals is called –Arthropod
• The coconut bark is formed by the tissue called Sklerenkaima.
• The exothermic is the reaction in which– Heat goes out.
• Which of the following is a Nobel gas –Krypton
• The source of sun’s energy – Nuclear fusion Reaction.
• The unit of heredity is – Genes.
• Who write a book entitled “Origin of Species” – Darwin.                                         
• The chemical formula of propane is –C₃H₈ 
• The amount of gas is invertially proportional to –pressure
• Falling coconut contains – Kinetic energy.
• Which group of the modern periodic table has only seven elements – first.
• The radiation emitted in a hot furnace is called – Infrared.
• Rocket’s launch is based on newton’s – Third law of motion.
• What is the focal length of a spherical mirror – Half of its radius of curvature.
• The momentum has – both magnitude and direction.
• Which metal reacts strongly with soft water –Sodium.
• The formula of kinetic energy is –1/2 mv²
• Embryo gets nutrition from the mother’s blood with the help of a special mechanism called-Cord.
• What is the role of the gall bladder during digestion – Fat Digestion.
• Which can be used as aroma indicator-Vanilla The mass of an object on earth is 10 kg then what will be its weight on earth – 98 N. 
• The harmful radiation emitted by the sun is – Ultraviolet rays.
• The reproductive part of angiosperms is found in-Flower.
• Which enzyme is secreted from the salivary gland – Amylase.
• What is the molecular mass of sodium carbonate- 106.
• The function of phloem in plants is –to transport food nutrients.
• In the modern periodic table, the zigzag lines separate – non-metal from metals.
• The most abundant element in the sun’s atmosphere – Hydrogen.
• Mass x acceleration is equal to – Force.
• The catalyst is a substance that – increases the rate of reaction.
• The S. I. Unit of pressure – Pascal.
• Which tissue is composed of dead cells –Sclerenchyma.
• The product of mass and velocity is called – Momentum.
• Coal is a –non-renewable fossil fuel.
• Bleaching power contains bleaching which agent – Chlorine.
• Plant tissues in which cells keep on dividing are called – Meristematic tissue.
• Copper metal is immersed in a mixture of zinc sulfate, then – there is no reaction.
• Garlic is a –seed plant.
• What is the energy stored in the Dam – Potential energy.
• The fastest medium in which sound travels is-Solid medium.
• The heat trapped under the surface of the earth is called – Geothermal energy.
• The absolute refractive index of a diamond – 42.
• The chemical formula of ethanol –C₂H₆ OH
• Plant cell wall made of – Cellulose and lactose
• Tartaric acid is a component of – Baking powder.
• Which element is used in thermal power equipment – Nichrome.
• The effect of stress depends on on-Cross section Area.
• The law of definite proportion was given by –Proust’s.                                
• The nephron is used to separate water, ions, and small molecules from the –Blood
• The point at which all the rays meet is called – Focus.
• The melting substance mixed with gases under the earth’s crust is called – Magma.
• How many groups and periods exist in the modern periodic table – 18 Group & 7 period.
• Which biological process converts chemical energy into heat energy-Respiration.
• Which of the following is a shiny nonmetal- Iodine
• Which energy has two types of energy –Mechanical
• Retardation is – negative acceleration
• Saturated hydrocarbon is also known as-Alkane
• The product of distance and time is known as – Work
• Which of the following has SI unit Newton-Force and Weight
• The ratio of mass and volume is known as-Density
• The common name of Ascaris is Round Worm
• Which chromosome is present in the female-X chromosome
• Which metallic element is used in the solar panel- Silicon
• The electronic configuration of helium is similar to –Noble Gas
• Pressure is equal to-Force/Area Which of the following is a malleable metal- Gold 
• How many phases of substance have been discovered by scientist-5 phases

RRB previousyear gk questions

• Phloem in plants is responsible for the transportation of –Food.
• The state of the body while falling feels –Weightless.
• The cell that store food for the embryo is called -Female Gametes.
• The Sclerenchyma cells are heavily thickened secondary walls due to – Lignin
• What has been said to the horizontal column in Mendel’s periodic table –Period
• The work done due to friction is neither be destroyed but it can be transformed into –Thermal Energy
• An object is thrown vertically upwards while raising it up to its potential energy and kinetic energy – Increases and Decrease Respectively
• The unit of measurement of the frequency of sound wave is- Hertz
• The position of the image formed by concave mirror when an object is placed at center of curvature – At Centre of Curvature
• Calcium is located in –4^th period and 2nd group in periodic table.
• Each member of the hydrocarbon family differ from the previous member by – CH₂ Group.
• When calcium sulfate hemihydrates dissolves in water, produces –Gypsum
• The tendency of an object to resist the change of its state of rest or motion is called – Inertia.
• What is the unit of electrical energy – Kilowatt hour
• Which plant does not grow by physiological amplification – Papaya
• When fossil fuel burn then the free carbon, nitrogen and oxide of sulphuric called – Acidic Oxide.
• Galvanometer is used to measure the –direction of electric current.
• What is the name of connective tissue that attached bones-Muscles
• Atomic number 57 is related to –d block element
• The dehydrating agent which is used to convert ethanol to ethane is – Concentration H₂So₄
• Odometer is used to measure the –Distance
• The chemical formula of iron oxide-Fe₂O₃
• The atomic number 35, 53 and 85 belongs to – Halogen family
• The friction force work in –Opposite direction of force
• The tissue which providing nutrition to the fetus is called –Placenta
• Which can be reproduced by mucus- Hydra
• How many elements exist in the sixth period of the modern periodic table –32.
• What is called vertical table-Group
• The position of the image formed by a convex mirror when an object is kept between the pole of the mirror is – virtual and small.
• How does fertility occur in amoeba – Binary Fission
• During the melting of solid –The temperature does not change.
• Most of the reptiles have – 3 chambered heart.
• What is the approximate size of the nerve cells in our body – 100cm.
• The 2^nd law of motion indicates-The rate of change of momentum.
• The non metal which is liquid at room temperature – Bromine.
• Sodium is stored in –Kerosene.
• The law which gives the relationship between voltage, current and resistance in any electrical circuit is called –Ohm’s law.
• Which hormone is released from testis –Testosterone.
• The rate of change of displacement over time is called –Velocity
• How many atoms of water in a molecules of washing soda – 10.
• The second equation of motion provides the relation between – Distance – time.
• When copper oxide is heated with hydrogen, then copper metal and water are formed in this action, what happens with hydrogen-Oxidation.
• What is evaporation – Solid changes to Vapour.
• The voltmeter is connected parallel to -the electric circuit
• The chemical formula of alkyne – CnH_2n – 2.
• In the process of galvanization, the iron is cover with layer – Zinc
• Ginger is an example of
• The structure that permits a neuron to pass an electrical or chemical signal to another neuron is called – Synapse.
• The resistance of the metal wire is inversely proportional to the length and directly proportional to –the cross sectional area.
• Which of the following is a mechanical wave –Sound waves.
• Which of the following shows non-polar coordinate bones –Chlorine atom
• The S.l. unit of force – Newton.
• The polyphyletic group of non-mobile organisms traditionally described as –Thalloid Plants.
• When the speed of an object is double then its kinetic energy becomes – 4 Times.
• Which plants have unpaved seeds – Cedar
• Zygotes is formed due to – Urination
• The filament of light bulb is made of – Tungsten.
• Which class of animal having warm blood-Mammal
• The relationship between velocity and time is –V = u + at
• In the human digestive system, secretion of digestive juice is due to –Hepatie.
• Which of them having maximum attraction force among particles – Copper red.
• Metallurgy is a process to remove the metals from its –
• Carriers of genetic properties are – DNA
• The elements of 18 group are called – Nobel gas.

2018 RRB Group D previous year gk questions

• Chemical formula for white alloy zinc-ZNSO₄ 7 H2O
• How many bones are in the body-206
•  In 2004, NASA launched a messenger space craft to study Plant name-Mercury:
•  Sulfur is easily soluble in-carbon disulphide
• What is a vegetarian called-Primary consumer
• What is the respiratory limb in the scorpion-Booklags
•  What is the speed of air measured by –anemometer
• Which hormone is frozen by being frightened-Adrenaline
• Which planet contains ring-Saturn
•  Which vitamin is responsible for blow clotting –vitamin K
• The relationship between displacement and time is-S= ut + 1/2 at²
• Which of the following elements having density and boiling point is low –Na
• Which of the following gas is used to fill in the electric bulb – Argon (Ar) and Nitrogen (N₂)
• The mirror formula is    
• Measurement of the mass of an object called the measurement of inertia
• The relative mass of CO is – 28.0 g/mol.
• Metals has generally­____ electrons in there outer most shell-1,2,3
•  Hydra is a genus of invertebrate fresh water animals of the class –Hydrozoa (Phylum Cnedaria)
•  In the modern periodic table the 1st group contain -Only Gases Elements.
• Starfish or sea stars are star shaped echinoderms belonging to the class –Asteroidean
• The image formed on retina is -Real and Inverted
•  If the PH value of a salts is 7 then it is called – Strong acid and strong base.
• Energy can neither be created nor be destroyed but it can transformed into one form into another and it is called – Law of conservation of energy.
• The S.l. unit of acceleration is –m/s²
• The odometer of automobile measures –distance
• ….. is the non-metal that is present in a liquid state. – Bromine

• ___transmits food to all parts of the plant – Phloem.
•  A radioactive metal, which is an abundant source of concentrated energy and was discovered in 1789, having atomic number 92 is – Uranium.
• Blood and bones are the example of – Connective tissue.
•  Boiling water reactor and pressure water reactor are the types of –Nuclear reactor.
• CaO(calcium oxide) is also called –Quick lime.
• Chlorine, florine and iodine are the example of – Halogen family
• Cracking process is related to –petrol production.
•  Glucose have______ Carbon molecules –6
•  Ice floats on water-because of their low density
•  In human being, men’s sexual chromosome group is –XY.
• The dam water does not contain-kinetic energy.
• The development of pollen tube is an important phase of –spermatophytes in land adaptation.
• The focal length of convex mirror are always – Positive
• The gravitational field is maximum at-poles
• The meaning of retardation is –negative acceleration.
• The momentum of a moving body depends on – its mass and speed.
• The speed of light is – 3 x 10⁸ m/s.
•  The utensils are coated with tin rather then zinc because – Zinc, is more reactive than tin.
• The weight of human brain is – 1350 -1400 gm
• There is a of charge on the electron-1.6 x 10^-16 coulombs.
• Transformer works on the principle on- Mutual induction
•  Vulcanization or vulcanization is chemical process for converting natural rubber or related polymers into more durable materials by –heating them with sulfur.
• What is responsible for the extra strength of Pyrex glass – Borax
•  What is the atomic number of Barium –56
•  What is the chemical formula of phosphoric acid-H₃ PO₄
• What is the physical state of water at 257°C-Gases.
• Which country has become the first carbon negative country-Bhutan
•  Which metals are highest active metals –alkali metals .
• Which of the following detects electric current in the circuit – Galvanometer.
•  Which of the following having less density than water – Cork.
•  Which of the following is not the concept of Dalton’s atomic theory – All substances are made up of small particles called molecules.
•  Which of the following process, in wich energy is released in very large quantities – Aerobic reception.
• Which of the following sound waves having longest wavelength – 100 Hz frequency wave.(according to option)
•  Which thread has least ability to catch fire-cotton.