Science Olympiad Miscellaneous Worksheet-10

Science Olympiad Miscellaneous Worksheet-10

1. Coiled structure located in the inner ear is known as _______.

(a) Cochlea                                    (b) Helico trema

(c) Eustachian tube                     (d) Semicircular canal

2. Outermost coat of the eyeball consists of sclera and _______.

(a) Cornea         (b) Retina          (c) Choroid        (d) Uvea

3. Identify pupil in this diagram.

(a) D                             (b) A                             (c) B                    (d) C

4. Identify the ear ossicle B in this diagram.

(a) Incus            (b) Malleus       (c) Stapes

5. Part of the eye affected in cataract is:

(a) Lens              (b) Cornea         (c) Sclera           (d) None of these

6. Identify the ear ossicle "A" in this diagram.

(a) Malleus        (b) Incus            (c) Stapes

7. Blind spot of the eye is also known as:

(a) Optic disc    (b) Fovea           (c) Macula

8. Identify the structure 'A' in this diagram.

(a) Optic Nerve                             (b) Retina

(c) Optic Papilla                           (d) Optic Chiasma

9. Small elevations on the tongue which contain taste buds are known as:

(a) Papillae       (b) Receptors    (c) Humps         (d) Gyri

10. Layer of the eye in which rods and cones are found:

(a) Retina          (b) Sclera           (c) Cornea         (d) Choroid

11. Smallest bone in the human body:

(a) Stapes          (b) Hyoid           (c) Incus            (d) None of these

12. The end organs (receptors) of taste sensation are called _______.

(a) Taste buds  (b) Tongue        (c) Papillae        (d) Taste pores

13. _______ membrane is found between external and middle ear.

(a) Tympanic    (b) Ear               (c) Auditory      (d) Vestibular

14. _______ apparatus is a part of the internal ear and is responsible for maintenance of equilibrium and posture.

(a) Vestibular   (b) Tympanic    (c) Cochlea        (d) Ear Drum

15. Viscous fluid filled in the space behind the lens:

(a) Vitreous humor

(b) Aqueous humor

(c) Both Vitreous humor and Aqueous humor

16. What colour is methyl orange in alkali conditions?

(a) Orange         (b) Blue              (c) Red               (d) Yellow

17. Why is universal indicator a better indicator to use than litmus indicator?

(a) Litmus indicator can only be used for acids.

(b) Universal indicator gives the pH of the solution.

(c) Universal indicator goes green if something is neutral.

(d) Litmus indicator can only be used for alkalis.

18. Which of the following substances when mixed together will produce table salt (sodium chloride)?

(a) Sodium thiosulphate and sulpur dioxide.

(b) Nitric acid and sodium hydrogen carbonate.

(c) Chlorine and oxygen.

(d) Hydrochloric acid and sodium hydroxide.

19. What colour would hydrochloric acid (pH 1) turn universal indicator?

(a) Orange         (b) Red               (c) Yellow          (d) Purple

20. If I react magnesium with hydrochloric acid, what gas is produced?

(a) Carbon dioxide                       (b) No gas is produced

(c) Oxygen                                     (d) Hydrogen

Answer Key:

(1)-(a); (2)-(a); (3)-(a); (4)-(a); (5)-(a); (6)-(a); (7)-(a); (8)-(a); (9)-(a); (10)-(a); (11)-(a); (12)-(a); (13)-(a); (14)-(a); (15)-(a); (16)-(d); (17)-(b); (18)-(d); (19)-(b); (20)-(d)