General Science & General Awareness Questions Asked
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General Science & General Awareness Questions Asked in Previous Year Railway Exams Index S.No Content No. of Questions Page.No 1 Physics 450 02 2 Chemistry 450 60 3 Biology 400 116 4 Geography 400 164 5 Polity 250 214 6 History 350 246 7 Environmental 100 289 8 Computer 100 301 9 Static GK 300 313 Total No.of Questions 2800 Page 1 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams Physics 2 1. The SI unit of Resistance F1=25 kq1q2/ r A. Coulomb F1=25F (by using equation 1). B. Newton 4. Negative acceleration is in the opposite direction of C. Ohm A. Velocity D. Joule B. Force ANS: C. ohm C. Momentum 2. 1 kWh=? D. Distance A. 3.6x10 -5 J ANS: A. velocity B. 3.6x10 5 J 5. The reflector of a search light is a C. 3.6x10 -6 J A. Cylindrical mirror D. 3.6x106 J B. Convex mirror ANS: D. 3.6X106 J C. Concave mirror 3. Two particles with charge q1 and q2 are kept at a D. Plane mirror certain distance to exert force F on each other. If the ANS: C. Concave mirror distance is reduced to one one-fifth, then the force 6. When a number of resistor are connected in series between them is: in a circuit, the value of current A. F/5 A. Decreases B. F/25 B. Remains the same C. 5F C. Increases D. 25F D. Becomes half ANS: D. 25F ANS: B. Remains the same Solution 7. A convex mirror of focal length f (in air) is 2 Let the force be F=kq1q2/ r ....(1) immersed in liquid (u=4/3). The focal length of So distance is reduced to r/5 mirror in liquid will be 2 F1=kq1q2/(r/5) A. (7/3) f Page 2 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams B. f 10. The focal length of a concave mirror with a radius C. (4/3)f of curvature of 20.0cm is D. (3/4)f A. 5cm ANS: B. f B. 15cm 8. Momentum is measured as the product of C. 10cm. A. Mass and velocity D. 20cm B. Mass and force ANS: C. 10cm C. Mass and inertia Solution: D. Mass and acceleration Radius of curvature = 2 x focal length. ANS: A. Mass and velocity So, focal length = (½)× radius of curvature = (½)×20 cm 9. A 4.0 kg object is moving horizontally with a speed = 10 cm of 5.0m/s. To increase its speed10m/s, the amount of 11. An object with a mass of 22kg moving with a net work required to be done on this object is velocity of 5m/s possesses a kinetic energy of A. 75J A. 275 J B. 150J B. 2750 J C. 50J C. 1100 J D. 100J D. 110 J ANS: B. 150 J ANS: A.275 J Solution Solution: m=4 kg K.E= (1/2) x mv2 = (1/2) x 22 x 52 =275 J Initial velocity (u) =5 m/s 12. If you look into a mirror and find that the image Final velocity (v) =10 m/s (your reflection) is smaller than you, then the type of w = (1/2) × m × (v2-u2) mirror w=1/2 x 4x (102-52) A. Concave mirror w=2 x (100-25) B. Convex mirror w=2 × 75 C. Plano-concave mirror w=150 J D. Plane mirror ANS: B. convex mirror Page 3 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams 13. The resistance of a conductor is inversely W = K.E. proportional to its W = 1/2 mv2 A. Area of cross section W = 1/2 × 4 × 52 B. Length W = 2 × 25 C. Temperature W = 50 J D. Resistivity 16. Which are the following never occurs singly in ANS: A. Area of cross section (R ∝ 1/A) nature 14. A body of mass 2kg is thrown upward with initial A. Inertia velocity of 20m/s after 2s its kinetic energy will be B. Force A. 200J C. Velocity B. 400 J D. Momentum C. 0J ANS. B. Force D. 100J 17. What will be the kinetic energy (Ek) of a moving ANS: C. 0J body mass m. If its speed doubled from v to 2v Solution: A. 1/2 EK V=u-gt B. 4EK In 2s, v=20−10×2=0 C. E K 2 As, K.E= (1/2) mv =0 D. 2EK 15. A body of 4kg lying at rest under the action of ANS: B. 4EK your constant force it gains a speed of 5m/s the work 18. A current I flows through a resistor. A source done by the force will be maintains a potential difference of V across the A. 30J resistor. The energy supplied by the source of time t B. 50J is C. 40J A. VI/t D. 20J B. VI ANS: B. 50J C. VIt2 Solution: D. VIt ANS: D. VIt Page 4 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams 19. A raised hammer possesses 23. If a body takes t seconds to go once round the A. Kinetic energy circular path of radius r the velocity v is given by B. Mechanic energy A. 2 πr/t C. Potential energy B. t/2π r D. Muscular energy C. 2π/ r t ANS: C. potential energy D. 2π t/r 20. A boiling point of an alcohol is 780c what is the ANS: A. 2π r/ t temperature in Kelvin scale 24. Find the position of the image formed by a A. 78k concave mirror when the object is placed between B. 341k Pole and Focus C. 373k A. Between F and C D. 351k B. Beyond C ANS: D. 351k C. At infinity 21. If the Resistance of a conductor is doubled, the D. Behind the mirror current gets halved. This is because ANS: D. Behind the mirror A. I=R/V 25. A person holding a pen in his left hand sees his B. I=V-R reflection in the mirror holding the pen in his right C. I=VR hand. This is due to which of the following D. I=V/R phenomena? ANS: D. I=V/R A. Total internal reflection 22. The value of universal gravitation constant (G) B. Refraction was determined by C. Lateral inversion A. Antoine Lavoisier D. Reflection B. Henry Cavendish ANS: C. Lateral inversion C. Issac newton 26. The kinetic energy of a ball weighting 0.5kg D. Jhon dalton moving with a velocity of 4m/s will be ANS: B. Henry Cavendish A. 12J B. 8J Page 5 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams C. 4J D. Towards the normal and slows down D. 16J ANS: A. Away from normal and speeds up ANS: C. 4J 30. The tendency of undisturbed objects to stay at Solution: rest of to keep moving with same velocity is called Mass = 0.5 kg A. Momentum velocity = 4 m/s B. Force kinetic energy is given as: C. Energy KE= (1/2) x mv2 =1/2 x 0.5 x16 =4J D. Inertia ANS.D. Inertia 27. According to ohm’s law, If current increases and 31. When a compressed slinky is released it converts potential difference (v) remains constant, then potential energy into A. Resistance increases A. Mechanical energy B. Potential different decreases B. Heat energy C. Resistance unchanged C. Kinetic energy D. Resistance decrease D. Chemical energy ANS: D. Resistance decreases ANS: C. kinetic 28. Which is the form of energy that does not occur energy while riding a bicycle? A. Kinetic energy 32. Sounds travels at a speed of 333m/s in the air, B. Heat energy thus in one sec a distance of 333m is travelled by C. Mechanical energy A. Particles D. Chemical energy B. Receiver ANS: D. Chemical energy C. Source 29. When a ray of light travels from a denser medium D. Disturbance to a rarer medium, it bends: ANS: D. Disturbance A. Away from normal and speeds up 33. Velocity of the light in vacuum B. Towards the normal and speeds up A. 3x108m/s C. Away from the normal and slows down B. 3x106 m/s Page 6 of 349 Get to Download More Free PDFs | Get High Standard Mock Test Series for all Railway Exams If any suggestions/ errors in our PDFs Feel Free to contact us via this email: [email protected] General Science & General Awareness Questions Asked in Previous Year Railway Exams C.