CDS 2014 (1) ( held on 09.02.2014 )

31. Which of the following is/are the stage(s) of demographic transition?

  1. High death rate and birthrate, low growth rate
  2. Rapid decline in death rate, continued low birthrate, very low growth rate
  3. Rapid decline in birthrate, continued decline in death rate
  4. Low death rate and birthrate, low growth rate

select the correct answer using the code given below.

  1. 1 only
  2. 1,2 and 3
  3. 3 and 4
  4. 1 and 4

32. In a forest, animals like voles and wood lice feed on plant roots and barks respectively. Among the other carnivores, foxes, shrews and owls are present in that forest. Following predictions are made by a group of observers who have visited the forest :

  1. If the roots of the tree develop a disease, then voles and foxes will starve and not the owls.
  2. Population of voles is dependent on wood lice population through food web.
  3. If owl population declines, it will indirectly affect wood lice population.
  4. If barks of tree are affected due to a disease, then reduction of wood lice will affect the shrew population forcing owls to eat more voles.

Which of the above predictions is/are correct?

  1. 1, 2 and 4
  2. 2 only
  3. 1 and 2 only
  4. 3 only

33. Which of the following is/are direct source(s) of information about the interior of the earth?

  1. Earthquake wave
  2. Volcano
  3. Gravitational force
  4. Earth magnetism

Select the correct answer using the code given below.

  1. 1 and 2 only
  2. 2 only
  3. 3 and 4 only
  4. 1, 2, 3 and 4

34. What causes dough (a mixture of flour, water, etc.) to rise when yeast is added to it?

  1. An increase in the temperature
  2. An increase in the amount of the substance
  3. An increase in the number of yeast cells
  4. Release of carbon dioxide gas

35. Which of the following are the two main consatituents of granite?

  1. Iron and silica
  2. Iron and silver
  3. Silica and aluminium
  4. Iron oxide and potassium

36. In cricket match, while catching a fast-moving ball, a fielder in the ground gradually pulls his hands backwards with the moving ball to reduce the velocity to zero. The act represents

  1. Newton's first law of motion
  2. Newton's second law of motion
  3. Newton's third law of motion
  4. law of conservation of energy

37. Two strands of DNA are held together by

  1. hydrogen bonds
  2. covalent bonds
  3. electrostatic force
  4. van der Waals' forces

38. Which one of the following dams is constructed across Krishna River?

  1. Ukai Dam
  2. Krishnaraja Sagar Dam
  3. Srisailam Dam
  4. Mettur Dam

39. A metal screw-top on a glass bottle which appears to be stuck could be opened by using the tact that

  1. the metal expands more than the glass when both are heated
  2. the metal and glass expand identically when heated
  3. the metal shrinks when heated
  4. both metal and glass shrink when cooled

40. Among the following animals, choose the one having three pairs of legs.

  1. Spider
  2. Scorpion
  3. Bug
  4. Mite

41. Veliconda group of low hills is a structural part of

  1. Nilgiri Hills
  2. Western Ghats
  3. Eastern Ghats
  4. Cardamom Hills

42. Rachel Carson's famous book, Silent Spring refers to

  1. geology of terrain where river originates
  2. ecology and degradation of a hot spring due to excessive tourism
  3. biodiversity of an unknown terrain rich in flora and fauna
  4. the death of songbirds due to eating insects poisoned with pesticides

43. What would be the influence on the weather conditions when in mid-winter a feeble high pressure develops over the north-western part of India??

  1. High and dry winds would blow outward from this high pressure area.
  2. The northern plain would become cold.
  3. Scorching winds (locally called loo) would blow during the day-time.
  4. There would be torrential rains brought by thunderstorms.

Select the correct answer using the code given below.

  1. 1 and 2 only
  2. 2 and 3 only
  3. 3 and 4 only
  4. 1, 2, 3 and 4

44. When an incandescent electric bulb glows

  1. the electric energy is completely converted into light energy
  2. the electric energy is partly converted into light energy and partly into heat energy
  3. the light energy is converted into electric energy
  4. the electric energy is converted into magnetic energy

45. Which method of water purification does not kill microorganism?

  1. Boiling
  2. Filtration
  3. Chlorination
  4. UV-irradiation

46. Which one of the following is a land-locked harbour?

  1. Vishakhapatnam
  2. Ennore
  3. Mumbai
  4. Haldia

47. Which of the following statements is/are correct?

  1. Amnion contains fluid.
  2. Ultrasound scan can detect the sex of an embryo.

Select the correct answer using the code given below.

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

48. Iron sheet kept in moist air gets covered with rust. Rust is

  1. an element
  2. a compound
  3. a mixture of iron and dust
  4. a mixture of iron, oxygen and water