Choose the correct answer.

  1. Speed of the wind is measured by:

(a) Barometer                    (b) Hygrometer                  (c) Perimeter                      (d) Anemometer

(e) None of these

  1. ________ connects the muscle with the bone.

(a) Cartilage                       (b) Ligament                      (c) Tendon                         (d) Disc

  1. Polio is caused by a:

(a) Bacterial                                                                      (b) Virus

(c) Fungus                                                                         (d) Deficiency of vitamin

(e) None of these

  1. The coldest planet of the solar system is:

(a) Earth                             (b) Venus                            (c) Mars                               (d) Neptune

(e) None of these

  1. ______ is a vitamin.

(a) Citric acid                    (b) Tartaric acid                 (c) Ascorbic acid            (d) Acetic acid

(e) None of there

  1. An eggshell is composed of:

(a) Iron                                (b) Starch                            (c) Carbon                          (d) Protein

(e) None of these

  1. The most abundant element in the earth’s crust is:

(a) Nitrogen                       (b) Silicon                          (c) Carbon                          (d) Oxygen

(e) None of these

  1. The main constituent of Biogas is:

(a) Methane                      (b) Hydrogen                     (c) Oxygen                        (d) Carbon dioxide

(e) None of these

  1. Stalagmites are deposits of:

(a) Calcium oxide                                                           (b) Calcium sulphate

(c) Calcium hydroxide                                                   (d) Calcium carbonate

(e) Mixture of all salts

  1. Gigantism is the result of:

(a) Hypothyroidism                                                        (b) Recessive gene

(c) Hyper pituitarism                                              (d) Vitamin D deficiency

(e) None of these

  • Fill in the blanks with appropriate words:
  • Monomer of proteins are__ . (Amino acids)
  • Water transport in plants occurs within . (Xylem)
  • Underground and horizontal stems are called . (Rhizomes)
  • In the eye, only______ contain receptors for light energy. (Retina)
  • Plant_____ control plant responses to environmental stimuli. (Receptors)
  • ______ is often called the power houses of the cell. (Mitochondria)
  • The rate at which a current changes direction is called its_____ . (Frequency)
  • The energy of electrons at the negative terminal of a battery is called_____ . (voltage)
    (I) is the smallest planet of the solar system. (Mercury)

(j)                 Diamond is an allotropic form of the element______ . (Carbon)

  • Which of the following statements are false or true:
  • In the circulatory system two pulmonary arteries take blood from the left ventricle to the lungs.
  • Anaphase is the stage of mitosis during which the daughter chromosomes move towards the moles. (True)
  • The Motor neurons carry nerve impulses from the central nervous system to the effectors. (True)
  • Cochlea is a part of the middle ear. (False)
  • Tides happen due to the moon’s gravitational pull. (True)
  • Heavy water contains salts of Calcium and Magnesium. (False)
  • All non-metals exist in gaseous state. (False)
  • A parachute can be used by a spaceman to help in landing on the moon. (False)
  • The gem stones Ruby and Sapphires are composed of Aluminum Oxide. (True)
  • In a chemical battery chemical energy is directly converted into mechanical energy. (False)