General Science and Ability CSS-2011

EVERYDAY SCIENCE

❑ Select the best option/answer and fill in the appropriate Box on the Answer Sheet:

1. The planet of the solar system which has maximum number of moons is:

(a) Jupiter                          (b) Venus                            (c) Saturn                           (d) Uranus
(e) None of these

2. Sun is a:

(a) Planet                            (b) Comet                            (c) Satellite                        (d) Aurora

(e) None of these

3. The age of the solar system is:

(a) 4.5 billion years (b) 5.5 billion years                 (c) 6.5 billion years       (d) 7.5 billion years

(e) None of these

4. A unit of length equal to the average distance between the Earth and Sun is called:

(a) Light year                     (b) Astronomical unit (c) Parsec                              (d) Parallax
(e) None of these

5. An eclipse of the Sun occurs when:

• The Moon is between the Sun and the Earth
• The Sun is between the Earth and the Moon
• The Earth is between the Sun and the Moon
• The Earth casts its shadow on the Moon (e) None of these

6. The ozone layer protects the Earth from rays sent down by the Sun: (Repeated)

(a) Ultraviolet rays (b) Infrared rays                        (c) Gamma rays               (d) Radioactive rays

(e) None of these

7. The ozone layer is present about 30 miles (50 km) in atmosphere above the Earth. The

stratum (layer) of atmosphere in which ozone layer lies is called as:

(a) Exosphere                    (b) Mesosphere                 (c) Stratosphere              (d) Ionosphere

(e) Troposphere

8. Which rocks are formed by the alteration of pre-existing rocks by great heat or pressure?

(a) Igneous rocks                                                             (b) Sedimentary rocks

(c) Metamorphic rocks                                                (d) Acid rocks

(e) Basic rocks

9. The most abundant natural Iron Oxides are:

(a) Magnetite and Pyrite                                                (b) Magnetite and Bauxite

(c) Hematite and Pyrite                                                  (d) Hematite and Magnetite

(e) Hematite and Bauxite

10. The two most abundant elements in sea water are:

(a) Sodium and Potassium                                           (b) Sodium and Calcium

(c) Sodium and Chlorine                                            (d) Chlorine and Iodine

(e) Magnesium and Sulphur

11. An electric current can produce:

(a) Chemical effect           (b) Magnetic effect           (c) Heating effect             (d) All of these three

(e) None of these

12. The unit of home electricity energy consumption is:

(a) Watt hour                     (b) Kilowatt hour            (c) Joule hour                 (d) Kilo joule hour

(e) None of these

13. The magnet always points in the same direction, if allowed to move freely i.e. towards North and South poles, because of:

• Gravitational field
• A lot of metal deposits on North and South Poles
• Due to attraction of North Pole and repulsion of Western Pole
• Earth is a huge magnet
• None of these

14. When sound is reflected from floor, ceiling or a wall, it mixes with the original sound and changes its complexion, it is called as:

(a) Sound                            (b) Echo                              (c) Reverberation           (d) Noise

(e) None of these

15. The speed of sound in dry air at 20°C is about:

(a) 130 metres per second                                            (b) 230 metres per second

(c) 330 metres per second                                            (d) 430 metres per second

(e) None of these

16. The speed of light in vacuum is about:

(a) 300 million metres per second                   (b) 300 million metres per hour

(c) 300 million kilometres per second                  (d) 300 million metres per hour

(e) None of these

17. The time, light takes from the Sun to reach Earth is:

(a) 8 minutes                     (b) 25 minutes                  (c) 45 minutes                  (d) 60 minutes

(e) None of these

18. Light from the Sun travels a distance__________ before it reaches the Earth:

(a) 50 million km     (b) 100 million km   (c) 150 million km   (d) 200 million km
(e) None of these

19. The most suitable thermometer for measuring the boiling point of water is:

(a) Mercury thermometer                                          (b) Alcohol thermometer

(c) Bimetallic thermometer                                          (d) Liquid crystal thermometer

(e) None of these

20. The density of water is greatest at:

(a) 32°C                              (b) 0°C                                 (c) 4°C                               (d) 100°C

(e) None of these

21. Which one of the following statements is true?

(a) Gases do not conduct heat                                    (b) The best conductors are non-metals

(c) Conduction currents occur only in liquids (d) A vacuum cannot conduct heat (e) None of the statements is true

22. Ice can be changed to water by:

• Adding more water molecules
• Changing the motion of the water molecules
• Rearranging the atoms in water molecules (d) Destroying the atoms in water molecules (e) None of these

• The building blocks of elements are called: (a) Atoms (b) Molecules
  (e) None of these

24. Boiling of an egg is a change which is: (a) Physical (b) Chemical
    (e) None of these
25. The temperature of liquid Nitrogen is: (a) -32 °C (b) -80 °C
    (e) None of these
26. Which one of the following is an alkali? (a) Water (b) Vinegar
    (e) None of these
27. If an alkali is slowly added to an acidic solution, the pH of the acidic solution will:

(a) Increase                                                                     (b) Decrease

(c) Increase to 7 and then decease                             (d) Decrease to 7 and then increase

(e) Will remain same

28. The usual raw material for ceramics, generally found beneath the top soil is: (a) Sand (b) Silt           (c) Clay        (d) Plaster of Paris
    (e) Melamine
29. Polyamides are synthetic polymers commonly known as:

(a) Synthetic                    (b) Nylon                            (c) Cellulose                     (d) Protein

(e) None of these

30. Telephone was invented in 1876 in America by:

(a) Marconi                      (b) Galileo                          (c) John Baird                  (d) Edison

(e) Graham Bell

31. Information can be sent over long distances in the form of:

(a) Electrical signals through wires                        (b) Light signals through optical fibres

(c) Radio waves through air                                        (d) Any combination of these three

(e) None of these

32. Information can be stored in:

(a) Audio and video cassettes                                    (b) Floppy and compact discs

(c) Hard disks                                                                 (d) Laser and optical disks

(e) All of these four

33. Computers can: (Corrected)

(a) Add and subtract information only                  (b) Add, subtract and sort information only

• Add, subtract, sort and classify information
• Add and subtract but cannot sort information
• Add, subtract and sort but cannot classify information.

34. IBM stands for:

(a) International Business Machines                     (b) International Big Machines

(c) Interrelated Business Machines                            (d) Interrelated Big Machines

(e) None of these.

35. Chemicals used to kill weeds are called as:

(a) Insecticides                 (b) Fungicides                   (c) Herbicides                   (d) Fumigants

(e) None of these

36. The cytoplasm consists of several types of structures, which are called:

(a) Protoplasm                  (b) Nucleus                        (c) Cytochromes         (d) Organelles

(e) None of these

37. The structure of DNA was elaborated by Watson and Crick in:

(a) 1909                              (b) 1923                              (c) 1945                              (d) 1953

(e) None of these.

38. In a DNA molecule, the rule for base pairing is:

• Adenine always bound with thymine and cytosine with guanine
• Adenine always bound with cytosine and thymine with guanine
• Adenine always bound with guanine and cytosine with thymine
• Adenine always bound with uracil and cytosine with guanine
• None of these

39. Man belongs to the family:

(a) Felidae                          (b) Hominid                      (c) Mammalia                     (d) Primataceae

(e) None of these

40. Deficiency of vitamin C in the human body causes a disease called:

(a) Beriberi                         (b) Night blindness         (c) Rickets                           (d) Scurvy

(e) None of these

41. To measure the specific gravity of milk, the instrument used is:

(a) Hygrometer                  (b) Barometer                    (c) Lactometer                  (d) Hydrometer

(e) None of these

42. One of the fundamental characteristics of living organisms is:

(a) Photosynthesis          (b) Digestion                     (c) Excretion                     (d) Metabolism

(e) None of these

43. Plants growing on other plants are called as:

(a) Saprophytes                (b) Parasites                       (c) Epiphytes                    (d) Pathogens

(e) None of these

44. As per eating habit, squirrels are:

(a) Frugivorous                 (b) Herbivorous                (c) Carnivorous               (d) Omnivorous

(e) Insectivorous

45. Water loss from leaves through stomata is called as:

(a) Evaporation                                                               (b) Transpiration

(c) Evapotranspiration                                                  (d) Respiration

(e) None of these

46. The study of how plants and animals interact with one another and with the non-living environment is called as:

(a) Ecosystem                   (b) Sociology                     (c) Ecology                       (d) Habitat

(e) None of these

47. The number of bones in human body is:

(a) 200                                 (b) 202                                 (c) 204                             (d) 206

(e) None of these

48. Nervous system in human body consists of:

(a) Brain and spinal cord                                              (b) Brain and nerves

(c) Spinal cord and nerves                                             (d) Brain, spinal cord and nerves

(e) None of these.

49. In human eye, the light sensitive layer made of specialized nerve cells, the rods and cones is called as:

(a) The pupil                      (b) The cornea                    (c) The sclera                     (d) The iris

(e) The retina

50. Erythrocytes are also called as:

(a) Red blood cells          (b) White blood cells (c) Platelets                            (d) Plasma

(e) None of these