CDS General Knowledge Exam Paper – 08 September 2013

31. By what mechanism does scent spread all over the room if the lid is opened ?
A. pressure in the bottle
B. compression from the bottle
C. diffusion
D. osmosis

32. What type of mixture is smoke ?
A. solid mixed with a gas
B. gas mixed with a gas
C. liquid mixed with a gas
D. gas mixed with a liquid and a solid

33.A compound that is a white solid which absorbs water vapour from the air is –
A. sodium nitrate
B. calcium chloride
C. sodium carbonate
D. calcium sulphate

34. What are the elements which are liquids at room temperature and standard pressure ?
1. helium
2. mercury
3. chlorine

4. bromine
Select the correct answer using the codes given below –
A. 2 and 3 only
B. 2, 3 and 4
C. 2 and 4 only
D. 1 and 3

35. Which one among the following colours has the highest wavelength ?
A. violet
B. green
C. yellow
D. red

36. Which one among the following is not a correct statement ?
A. cathode rays negatively charged particles
B.cathode rays are produced from all the gases
C. electrons are basic constituents of all the atoms
D. hydrogen ions do not contain any proton

37. NaOH + HCL ⟶ NaCL + H2O
In the above chemical reaction –
A. sodium is oxidized and oxygen is reduced
B. sodium is oxidized and chlorine is reduced
C. sodium and hydrogen are oxidized
D. none of them are oxidized or reduced

38. Which element forms the highest number of compounds in the periodic table ?
A. carbon
B. oxygen
C. silicon
D. sulphur

39. Dirty cloths containing grease and oil stains are cleaned by adding detergents to water stains are removed because detergent –
A. reduces drastically and oil
B. increases the surface tension between water and oil
C. increases the viscosity of water and oil
D. decreases the viscosity in detergent mixed water

40. Motion of an oscillating liquid column in a U-tube is –
A. periodic but not simple harmonic
B. non periodic
C. simple harmonic and time period is independent of the density of the liquid
D. simple harmonic and time period depends on the density of the liquid

41. A rey of white light strikes the surface of an object. If all the colours are reflected the surface would appear –
A. black
B. white
C. grey
D. opaque

42. Magnetic, electrostatic and gravitational forces come under the category of –
A. non-contact forces
B. contact forces
C. frictional forces
D. non-frictional

43.Dispersion process forms spectrum due to white light falling on a prism, The light wave with shortest wavelength –
A. refracts the most
B. does not change the path
C. refracts the least
D. is reflected by the side of the prism

44. The main source of energy in sun is –
A. nuclear fusion
B. nuclear fission
C. chemical reaction
D. mechanical energy

45. A liquid initially contracts when cooled down to 4.c, but on further cooling down to 0.c, it expands. The liquid is-
A. alcohol
B. water
C. molten
D. mercury

Directions – (Q. 46-52) given questions consist of two statements, statement I and statement II. You are to examine these two statements carefully and select the answers to these items using the codes given below –
Codes :
A. both the statements are individually true and statement II is the correct explanation of statement I
B. both the statements are individually true but statement II is the correct explanation of statement I
C. statement I is true, but statement II is false
D. statement I is false, but statement IIis true

46. Statement I : typical laterite soils in india are generally fertile.
Statement II : laterite soils generally experience leaching.

47. Statement I : southern part of france is famous for wine making industry.
Statement II : southern part of france produces a variety of fruits due to mediterranean climate.

48. Statement I : kali age reflects the presence of deep social crisis characterized by varnas-ankara i.e.,intermixture of varnas or social orders.
Statement II : the vaisyas and sudras (peasants, artisans and labourers)either refused to perform producing function or pay taxes or supply necessary labour for economic production resulting in weakening of brahminical social order and social tension.

49. Statement I : the social institutions of caste in India underwent major changes in the colonial period.
Statement II : caste, in contemporary society is more a product of ancient Indian tradition than of colonialism.

50. Statement I : the Russian revolution of 1917 inspired the Indian working class movement.
Statement II : the non-cooperation movement (1921-22) saw the involvement of the indian working class.

51. Statement I : in India tribal movements of nineteenth century resulted out of the process of land displacements and the introduction of forest laws.
Statement II : the Indian national movement resolved the problems faced by the tribals.

52. Statement I : the economy of India in the 19th century came to a state of ruin under English east India company.
Statement II : English east India company’s acquisition of diwani right led to the miseries of the peasants and those associated with the traditional handicrafts industry of India.

53. In soil, water that is readily available to plant roots is –
A. gravitational water
B. capillary water
C. hygroscopic water
D. bound water

54. Blood does not coagulate inside the body due to the presence of –
A. haemoglobin
B. heparin
C. fibrin
D. plasma

55. Which one among the following is responsible for formation of ‘ozone holes’ in the stratosphere ?
A. benzopyrene
B. hydrocarbons
C. chlorofluorocarbons
D. UV radiation

56. Which one among the following groups of items contains only biodegradable items ?
A. paper, grass, glass
B. wood, flower, iron-scrap
C. sewage, plastic, leather
D. cow-dung, paddy-husk, vegetable wastes

57. Which organelle in the cell, other than nucleus, contains DNA ?
A. endoplasmic reticulum
B. golgi apparatus
C. lysosome
D. mitochondria

58. Which one among the following groups of animals maintains constant body temperature in changing environmental conditions ?
A. birds
B. amphibians
C. fishes
D. reptiles

59. A person feeds on rice and vegetable made up of potato only. He is likely to suffer from deficiency of –

A. carbohydrate and vitamins
B. proteins
C. carbohydrate and proteins
D. proteins and fats

60. Vaseline was applied to both surfaces of the leaves of a plant. Which of the following process/processes would be affected ?
1. photosynthesis
2. respiration
3. Transpiration
Select the correct answer using the code given below –
A. 1 and 3 only
B. 2 only
C. 2 and 3 only

D. 1, 2 and 3

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