RRB Examination General Knowledge Model Practice Papers

Railway Recruitment Board Examination

General Knowledge Solved Model Questions

1. Which of the following crops is regarded as a plantation crop?

• Coconut
• Cotton
• Sugarcane
• Rice

2. Which of the following is used in oven?

• X-rays
• UV rays
• Microwaves
• Radioactive

3. Gamma rays can cause .....

• gene mutation
• sneezing
• burning
• fever

4. Which element found in all organic compounds?

• Carbon
• Nitrogen
• Calcium
• None of them

5. Alloys made with mercury as one metal are called?

• Mixtures
• Emulsions
• Solders
• Amalgams

6. All noble gases are .....

• Colourless
• Colour
• Colourless and odourless
• Colourless and but have odour

7. What is the hardest form of carbon?

• Coke
• Graphite
• Charcoal
• Diamond

8. What is hottest part of the gas flame is called ........

• blue zone
• luminous zone
• dark zone
• non-luminous zone

9. Which type of lens is used to correct myopia?

• Convex lens
• Concave lens
• Biconcave lens
• Biconvex lens

10. Which one of the following is used to coat household articles?

• Lead
• Silver
• Chromium
• Tin

11. Which one of the following radioactive elements is used in heart pacemakers?

• Platinum
• Cobalt
• Iodine
• Iron

12. What is the chemical name of a substance which kills rats?

• White phosphorus
• Red phosphorus
• Potassium cyanide
• Ethyl Alcohol

13. The boiling point of water can be raised by..

• reducing pressure
• increasing pressure
• reducing heat supply
• increasing heat supply

14. Optic fibre are used in:

• CAT scans
• X-ray photos
• Ultrasound scans
• Endoscopy

15. "curie" is unit of:

• Radioactivity
• Temperature
• Heat
• Energy

16. Which of the following types of soil are mostly confined to river basins and coastal plains of India?

• Alluvial soils
• Black soils
• Laterite soils
• Red soils

17. T.V. antennas are usually made up of .....

• Copper
• Steel
• Aluminium
• Brass

18. The natural region which holds the Indian subcontinent is .......

• equatorial climate change region
• hot desert
• monsoon
• Mediterranean

19. Which of the following diseases is caused by a virus?

• Diabetes
• Malaria
• Smallpox
• Tuberculosis

20. What is the mainstay of Indian economy?

• Manufacturing
• Business
• Public sector
• Agriculture

21. Name the poison present in tobacco.

• Coniine
• Nicotine
• Theobromine
• Narcotine

22. Alcoholic drink contains ......

• Butyl Alcohol
• Ethyl Alcohol
• Propyl Alcohol
• Methyl Alcohol

23. Which of the following dams has generations of power more than irrigation as its main purpose?

• Gandhi Sagar
• Hirakud
• Periyar
• Tungabhadra

24. Which of the following areas or regions is most prone to earthquakes?

• Ganga-Brahmaputra valley
• Deccan plateau
• Plains of Northern India
• Western ghats

25. For which Diode is used?

• Modulation
• Oscillation
• Amplification
• Purification

26. Name the gas used for making vegetable ghee.

• Nitrogen
• Oxygen
• Sulphur
• Hydrogen

27. In summer, the mirages are seen due to the phenomenon of .......

• reflection of light
• total internal reflection
• interference of light
• diffraction of light

28. Electron microscope was invented by .....

• Knoll and Ruska
• Robert Koch
• Leeuwenhoek
• CPS Wanson

29. Which metal does not undergo corrosion due to the formation of oxide layer?

• Copper
• Iron
• Aluminum
• Zinc

30. The chemical part of the dye that absorbs light and produces colour is called .............

• Neon
• a chromophore
• a photochrome
• a pigment

31. A nautical mile is equal to ....

• 5060 feet
• 6080 feet
• 5280 feet
• 6060 feet

32. What is viewed through an electron microscope?

• electrons and other elementary particles
• structure of bacteria and viruses
• inside of human stomach
• inside of the human eye

33. 'Vinegar' is commercial name of ....

• Oxalic acid
• Hydrochloric acid
• Acetic acid
• Citric Acid

34. The study of Dendrology is associated with:

• Flowers
• Trees
• Shrubs
• Plants

35. The food poisoning is caused by .....

• Clostridium titeni
• Clostridium botulinum
• Salmonella toyphosis
• Baslils anthresis

36. The Bhopal gas tragedy was caused by the gas ........

• Methyl chloride
• Methyl Iso cyanide
• Methyl Iso Cyanate
• Methyl Cyanide

37. Molasses a by-product in the manufacture of sugar, is converted into .......

• Alcohol
• Paper
• Fuel
• Pulp

38. The thermal equator is found .....

• at the equator
• at the Tropic of Cancer
• north of the geographical equator
• south of the geographical equator

39. A large blood vessel that carries blood away from the heart is called.....

• a vein
• an artery
• a capillary
• nerve

40. Horse latitudes lie within the atmosphere pressure belts of .......

• Equatorial low
• Polar high
• Sub-tropical high
• Sub-polar low

41. Name the Continents that form a mirror image.

• Asia and Africa
• North America and South America
• Africa and South America
• Europe and Asia

42. Which of the following is an air-borne disease?

• Measles
• Pink eye
• Typhoid
• Tuberculosis

43. Plants which grow on saline soils are ......

• Xerophytes
• Hydrophytes
• Halophytes
• Succulents

44. Which component of plants receives stimulus for flowering?

• Stems
• Branches
• Leaves
• Roots

45. Which one of the following hormones is a steroid?

• Cortisone
• Glucagon
• Insulin
• Oxytocin

46. Fungi are plants that lack ........

• Oxygen
• Carbon dioxide
• Chlorophyll
• None of these

47. Submarines move under water. They have engines that run on ......

• Petrol and oxygen
• Diesel
• Batteries
• Stream

48. Reptiles are ......

• Cold blooded
• Warm blooded
• Non-hearing
• Egg-laying

49. Camberts law is related to .....

• Reflection
• Refraction
• Interference
• Illumination

50. Which one among the following is a major source of sugar?

• Watermelon
• Beetroot
• Sugarcane
• Date