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Quiz

1. Ozone is important to mankind because it ?

(1) Creates a protective coverage against ultraviolet rays
(2) Releases hydrogen in the atmosphere
(3) Releases oxygen in the air
(4) Maintains the temperature of the earth

2. Old finger prints on paper can be developed by ?

(1) Iodine fuming
(2) Ninhydrin solution
(3) Silver nitrate solution
(4) Universal gray powder

3. Tetraethyl lead (TEL) is added to petrol to ?

(1) Increase boiling point
(2) Increase flash point
(3) Increase anti-knocking rating
(4) Prevent freezing

4. Paracetamol ?

(1) Causes stomach ulcers
(2) Is an antibiotic
(3) Is a sulpha drug
(4) Relieves body pain

5. The gas which, on heating at high temperatures under high pressure, trans-forms into a waxy solid is ?

(1) Acetylene
(2) Ethylene
(3) Chlorine
(4) Hydrogen

6. Vinegar is acidic in nature due to the presence of ?

(1) Acetic acid
(2) Hydrochloric acid
(3) Lactic acid
(4) Vanillic acid

7. Heavy water ?

(1) Contains organic impurities
(2) Contains more dissolved air
(3) Contains deuterium in place of hydrogen
(4) Contains more dissolved minerals and salts

8. The gases used in the manufacture of ammonia are ?

(1) Oxygen and nitric oxide
(2) Nitrogen and hydrogen
(3) Nitrogen and oxygen
(4) Nitrogen and methane

9. The gas evolved during the fermentation of a sugar solution is ?

(1) Carbon dioxide
(2) Carbon monoxide
(3) Methane
(4) Sulphur dioxide

10. Gunpowder consists of a mixture of ?

(1) TNT and charcoal
(2) Nitre (potassium nitrate) , sulphur and charcoal
(3) Sand and TNT
(4) Sulphur, sand and charcoal

11. The pH of human blood is around ?

(1) 3
(2) 6
(3) 7.5
(4) 12

12. The nature of saliva is ?

(1) Amphoteric
(2) Acidic
(3) Basic
(4) Neutral

13. The 'IC' chips used in computers are made of ?

(1) Chromium
(2) Silicon
(3) Silica
(4) Iron oxide

14. For rural electrification and domestic cooking, the most appropriate and economical would be ?

(1) Wind mills
(2) Electricity
(3) Nuclear energy
(4) Biogas

15. A solution of washing soda in water is ?

(1) Acidic
(2) Alkaline
(3) Bleaching
(4) Neutral

16. In the process of dialysis, used on patients with affected kindneys, the phenomenon involved is ?

(1) Absorption
(2) Diffusion
(3) Osmosis
(4) Electrophoresis

17. In natural gas, the compound present in major amounts is made up of hydrogen and ?

(1) Carbon
(2) Oxygen
(3) Nitrogen
(4) Sulphur

18. Animal charcoal is obtained by ?

(1) Burning the bones of animals in contact with air
(2) Burning the flesh of animals
(3) Burning the bones of animals out of contact with air
(4) The destructive distillation of bones

19. Cooking gas is a mixture of ?

(1) Carbon dioxide and oxygen
(2) Carbon monoxide and carbon dioxide
(3) Butane and propane
(4) Methane and ethylene

20. Of the following commonly used materials, the one that is not an alloy is ?

(1) Brass
(2) Bronze
(3) Copper
(4) Steel

21. The only physical quantity whose unit does not follow a metric system is ?

(1) Current
(2) Distance
(3) Time
(4) Mass

22. A fresh egg sinks in pure water but floats in salt water. This is because ?

(1) Saline water islighter than pure water
(2) Saline water is denser than pure water
(3) The viscosity of saline water is higher than that of pure water
(4) None of the above

23. In which process, the rate of transfer of heat is maximum ?

(1) Radiation
(2) Conduction
(3) Convection
(4) In all these, heat is transferred with same speed

24. Which has the longest wavelength ?

(1) Radio-waves
(2) X-rays
(3) Infrared light
(4) Ultraviolet light

25. The shortest wavelength is for ?

(1) Gamma rays
(2) Micro waves
(3) Ultraviolet rays
(4) X-rays

26. The 'power steering' of modem day cars is based on ?

(1) Brawnian motion
(2) Bemoulli's principle
(3) Archimedes's principle
(4) Pascal's law

27. Bridges are declared unfit after long use due to phenomenon of ?

(1) Design becomes old
(2) Corrosion
(3) Elastic fatigue
(4) Plasticity

28. Ozone layer protects the living cells from ?

(1) Infrared radiation
(2) Ultraviolet radiation
(3) X-rays
(4) All of the above

29. Sound energy is converted into electrical energy by a ?

(1) Earphone
(2) Loudspeaker
(3) Microphone
(4) Sonometer

30. The first modern scientist to give atomic theory was ?

(1) A vogadro
(2) Dalton
(3) Lavoisier
(4) Mandleef

31. The fourth state of matter is called ?

(1) Gas
(2) Liquid
(3) Plasma
(4) Solid

32. The same notes being played on the Sitar and Veena differ in ?

(1) Quality
(2) Pitch
(3) Both quality and pitch
(4) None of the two

33. Ozone layer in the atmosphere exist at the height of ?

(1) 20 Km
(2) 50 Km
(3) 120 Km
(4) 150 Km

34. Greenhouse effect keeps the earth surface ?

(1) Cold in night
(2) Dusty and cold
(3) Moist in night
(4) Warm in night

35. Green house effect is due to ?

(1) Infra-red radiation
(2) Red colour radiation
(3) Visible radiations
(4) Violet colour radiation

36. Stars appear displaced from their position because of ?

(1) Due to gravitational field of sun
(2) Dispersion
(3) Refraction
(4) Reflection

37. Colour of sky appears blue because ?

(1) All the blue colour of solar spectrum is absorbed
(2) It is its natural colour
(3) Blue colour of solar spectrum is scattered
(4) All red colour of solar spectrum is absorbed

38. Who named positive and negative charges ?

(1) Benjamin Franklin
(2) Faraday
(3) Gauss
(4) Madam Curie

39. When seen in green light, the saffron and green colours will appear to be ?

(1) Red or white
(2) Green
(3) Black and green respectively
(4) Black

40. A sextant is used to measure ?

(1) Area of a mountain
(2) Breadth of a tower
(3) Height of an object
(4) Volume of a building

41. A permanent magnet ?

(1) Attract ferromagnetic substances and repels all other
(2) Attracts some substances and repels other
(3) Attracts all substances
(4) Attracts only ferromagnetic substances

42. An air bubble in water shines because of the phenomenon of ?

(1) Diffraction
(2) Reflection
(3) Refraction
(4) Total internal reflection

43. Brilliance of diamond is due to ?

(1) Cutting
(2) Shape
(3) Reflection
(4) Total internal reflection

44. A green leaf placed in a dark room is illuminated by red light. The leaf appears ?

(1) Red
(2) Green
(3) Black
(4) Yellow

45. A cylindrical lens is required to correct ?

(1) Astigmatism
(2) Myopia
(3) Hypermetropia
(4) Presbyopia

46. In the women eye the focussing is done by ?

(1) Changes in the refractive index of the eye fluids
(2) Change in the convexity of the lens surfaces
(3) To and fro movements of the eye lens
(4) To and fro movement of the retina

47. A man cannot see objects distinctly at a distance less than one matre. He is surffering from ?

(1) Astag-matism
(2) Distortion
(3) Hypermetropia
(4) Myopia

48. Optical fibres are related with ?

(1) Computer
(2) Communication
(3) Light
(4) None of these

49. Myopia is due to ?

(1) Old age
(2) Elongation of eye ball
(3) Shortening of eye ball
(4) Irregular change in focal length

50. Cinnabar is an ore of ?

(1) Copper
(2) Lead
(3) Iron
(4) Mercury

51. Containers for carrying strong acids are made of ?

(1) Copper
(2) Brass
(3) Lead
(4) Platinum

9 thoughts on “Scroll Content

  1. xtra ordinary site, n cmplt info availble over here..bt vil u plz update the current affairs of oct& nov as far as psbl,espcialy those r useful 4r banking..

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