Current Affairs

Online Test for General Science

General Science questions and answers with tests for practice. These questions not only develop of your I.Q. but will useful for upcoming government exams also.

1. Monazite is an ore of–
A. Sodium
B. Titanium
C. Thorium
D. Zirconium

2. The gas usually causing explosions in coal mines is–
A. Hydrogen
B.Carbon monoxide
C. Air
D. Methane

3. Cotton fibers are made of–
A. cellulose
B. starch
C. proteins
D. fats

4. Which of the following ores does not contain iron?
A. Haematite
B. Magnetite
C. Limonite
D. Cassiterite

5. Which variety of glass is heat resistant ?
A. Hard glass
B. Flint glass
C. Pyrex glass
D. Bottle glass

6. Which of the following is used for removing air bubbles from glass during its manufacture ?
A. Fledspar
B. Arsenic oxide
C. Potassium Carbonate
D. Soda Ash

7. What are soaps ?
A. Salts of silicates
B. Ester of heavy fatty acids
C. Sodium or potassium salts of heavier fatty acids
D. Mixture of glycerol and alcohol

8. In which following processes light energy is converted into chemical energy ?
A. Respiration
B. Fermentation
C. Photosynthesis
D. Photorespiration

9. Cooking oil can be converted into vegetables ghee by the process of–
A. Oxidation
B. Hydrogenation
C. Distillation
D. Crystallisation

10. Photosynthesis is–
A. An exothermic process
B. An endothermic process
C. A neutral process
D. A thermostatic process

11. J. B. Sumner isolated first enzyme from Jackbeans as–
A. amylase
B. trypsin
C. urease
D. renin

12. Enzymes are absent in–
A. fungi
B. bacteria
C. viruses
D. algae

13. The enzymes sucrase acts on–
A. sucrose only
B. sucrose and starch
C. all disaccharides
D. any organic monomer

14. C.T. Scanning uses–
A. Ultrasound waves
B. Gamma rays
C. X-rays
D. None of the above

15. Chemically ‘speropolenin’ is a / an–
A. co-polymer of carotinoid and fatty acid
B. Carbohydrate
C. Propene
D. Lactic acid

16. A mixture of salt and sand can be separated by–
A. Sublimation
B. Dissolving water
C. Gravity separation
D. Dry distillation

17. PVC is obtained by the polymerisation of–
A. propane
B. vinyl chloride
C. styrene
D. Acetylene

18. The most abundant metal in the earth’s crust is–
A. Zinc
B. Copper
C. Aluminium
D. Iron

19. The gas used to extinguish fire is–
A. Neon
B. Nitrogen
C. Carbon dioxide
D. Carbon Monoxide

20. In which of the following activities Silicon Carbide is used ?
A. Making cement and glass
B. Disinfecting water and ponds
C. Making castes for statues
D. Cutting very hard substances

21. The two elements that are frequently used for making transistors are–
A. Boron and Aluminium
B. Silicon and Germenium
C. Iridium and Tungsten
D. Niobium and Columbium

22. Which of the following gas is not known as green house gas ?
A. Methane
B. Carbon dioxide
C. Nitrous oxide
D.CFC

23. Which of the following is not a neutral oxide ?
A. Carbon Monoxide
B. Sulphur Dioxide
C. Water
D. Nitric Oxide

24. Potassium Permanganate is used for purifying drinking water, because–
A. It dissolves the impurities of water
B. It is a sterilizing agent
C. It is an oxidising agent
D. It is a reducing agent.

25. The presence of which of the following salts in water causes corrosion in steam boilers ?
A. Sodium Chloride
B. Magnesium Chloride
C. Calcium bicarbonate
D. Potassium bicarbonate

26. Water is a good solvent of ionic salts because–
A. It has no colour
B. It has a boiling point
C.) It has a high dipole moment
D. It has a high specific heat

27. Nuclear fission is caused by the impact of–
A. Proton
B. Electron
C. Neutron
D. (A) and (b)

28. Which is a good nuclear fuel ?
A. Uranium – 238
B. Neptunium – 239
C. Thorium – 236
D. Plutonium – 236

29. Long distance photography is facilitated by–
A. Visible light
B. X-rays
C. Infra Red rays
D. Ultra violet rays

30. Which of the following is used in making artificial sweetener saccharine ?
A. Benzene
B. Toluene
C. Phenol
D. Aniline

31. Rayon is chemically–
A. Glucose
B. Amylase
C. Cellulose
D. Peptin

32. Which of following is used as a filter in rubber tyres?
A. Graphite
B. Coal
C. Coke
D. Carbon lack

33. Which of the following substances exhibit the property of sublimation ?
A. Ice
B Wax
C. Camphor
D. Ethyl Alcohol

34. Combustion is the process in which–
A. Heat is produced
B. Light is produced
C. Heat and Light is produced
D. None of these

35. The chemical used as a fixer in photography is–
A. Borax
B. Sodium thiosulphate
C. Sodium Sulphate
D. Ammonium persulphate

36. Vitamins are–
A. inorganic substances which cannot be synthesized by animals
B. inorganic by animals
C organic substances that cannot be generally synthesized by animals
D. organic substances which can be commonly synthesized by animals

37. Richest source of vitamin B1 (thiamine) is–
A cod liver oil
B. curd
C. whole bread meal
D. eggs

38. One of these vitamins is called erythrocyte maturation factor–
A. A
B.) C
C. K
D.B12

39. Saponification involves the hydrolysis of fats and oils by–
A. water
B. washing soda
C. stearic acid
D. caustic soda

40. Photo-synthesis is a/ an–
A. exothermic process
B. endothermic process
C. a neutral process
D. a thermostatic process

41. Which of the following is a physical change ?
A. oxidation
B. reduction
C. sublimation
D. decomposition

42. The process by which an organic compound breaks down into simpler compounds on heating to  high temperature is known as–
A. Aromatisation
B. Polymerisation
C. Pyrolysis
D. Reduction

43. The element common to all acids is–
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Sulphur

44. Gobar gas contains mainly–
A. Methane
B. Carbon dioxide
C. Butane
D. Carbon Monoxide

45. The most malleable metal is–
A. Silver
B. Gold
C. Aluminium
D. Sodium

46. Which of the following is used in making smoke bombs ?
A. Sulphur
B. Phosphorus
C. Hydrogen
D. Carbon

47. Caustic Soda is–
A. Nacl
B. Na2CO3
C. NaOH
D. NaHCO3

48. Chemical formula of Water glass is–
A. Na2SiO3
B. Al2O3
C. NaAlO2
D. CaSiO3

49. The hardest substance available in earth is–
A. Platinum
B. Silicon
C. Diamond
D. Gold

50. Which of the following is the best conductor of electricity ?
A. Zinc
B. Copper
C. Gold
D. Silver

51. The ratio of pure gold in 18 carat gold is–
A. 60%
B. 75%
C. 80%
D. 100%

52. Which radioactive pollutant has recently drawn the attention of the public due to its occurance in the building materials ?
A. Radium
B.Radon
C. Thorium
D. Plutonium

53. In an atomic explosion enormous energy is released which is due to the–
A. Conversions of neutrons into protons
B. Conversion of chemical energy into nuclear energy
C. Conversion of mechanical energy into nuclear energy
D. Conversion of mass into energy

54. Which of the following is used as a coolant in nuclear reactors ?
A. Heavy water
B. Cadmium
C. Liquid sodium
D. Graphite

55. In vulcanization, natural rubber is heated with–
A. Carbon
B. Sulphur
C. Silicon
D. Phosphorus

56. Which type of fire extinguisher is used for petroleum fire ?
A. Foam type
B. Soda acid type
C. Powder type
D. None of these

57. Which is/ are the important raw materials in cement industry ?
A. Limestone
B. Gypsum and Clay
C. Clay
D. Limestone and Clay

58. A mixture of iron filings and sand can be separated by–
A. Heating
B. Sublimation
C. Hand picking
D. Magnetic Separation

Online Test for General Science

Leave a Comment

error: Content is protected !!