SilverZone iOS Sample Paper Class 8

International Olympiad of Science - iOS’ 22 CLASS 8th SAMPLE QUESTIONS The Actual Question Paper Contains 35 Questions. The Duration of the Test Paper is 40 Minutes. 1. Which one of the following is the correct order of (A) P-bacteria, Q-cholera, R-virus, S-malaria, T-mosquito structural organisation of an organism? (B) P-bacteria, Q-measles, R-fungi, S-malaria, (A) Cells → Organs → Tissues → Organ systems → Organisms T-mosquito (C) P-bacteria, Q-measles, R-virus, S-dengue, T-mosquito (B) Cells → Tissues → Organs → Organ systems → Organisms (D) P-bacteria, Q-measles, R-virus, S-malaria, T-mosquito (C) Organs → Tissues → Organ systems → Organisms → Cells 6. Match the following: (D) Cells → Organs → Organ systems → Tissues → Organisms 1. Solid metal A. Sodium 2. Name the cell which has been shown in the following 2. Solid non metal B. Bromine figure. 3. Gaseous non metal C. Chlorine 4. Liquid non metal D. Sulfur (A) 1-A, 2-D, 3-C, 4-B (B) 1-A, 2-C, 3-D, 4-B (A) Muscle cell (B) Nerve cell (C) 1-A, 2-B, 3-C, 4-D (C) Bone cell (D) White blood cell (D) 1-B, 2-D, 3-C, 4-A 3. Which one of the following statements is correct? 7. Which option is correct with respect to the figure (A) All cells of human body are of similar shape and size. given below? (B) Only muscular cells of human body have cell walls. M N (C) Nerve cells are specialized to carry messages from one part of the body to the other part. (D) Dead parts of the body like hair are not made of cells. 4. In which one of the following options, the various stages O in the development of a silk moth, has been correctly arranged? (A) Egg → Pupa → Caterpillar → Silk moth (B) Egg → Caterpillar → Pupa → Silk moth L (C) Egg → Silk moth → Pupa → Caterpillar (A) L-pinna; M-eardrum, N-ear canal O-cochlea (D) Egg → Silk moth → Caterpillar → Pupa (B) L-pinna; M-ear canal, N-eardrum, O-cochlea 5. Some terms are missing in the table given below. (C) L-eardrum; M-pinna, N-ear canal O-cochlea Choose the correct option to complete the table. (D) L-eardrum; M-ear canal, N-pinna O-cochlea Human disease Casuative Mode of 8. Given below is a list of substances and its density: micro-organism transmission Substance Density Tuberculosis P air Water 1.0 g/mL Q virus air Oil 0.80 g/mL polio R air/water AB 0.88 g/mL S protozoa T Mercury 8.6 g/mL 12

International Olympiad of Science - iOS’ 22 A student fills all the above substances into a graduated 9. In which one of the following cases loudness of the cylinder. Where the AB will appear after filling all sound will be maximum? substances in the graduated cylinder? (A) AB will appear between Oil and Water in the (A) graduated cylinder (B) AB will appear between mercury and Water in the (B) graduated cylinder (C) AB will appear just below the water in the graduated cylinder (C) (D) AB will appear just above the mercury in the (D) graduated cylinder 10. Which one of the following microorganisms is an example of algae? (A) Lactobacillus (B) Rhizobium (C) Chlamydomonas (D) Entamoeba ANSWERS 1. (B) 2. (B) 3. (C) 4. (B) 5. (D) 6. (A) 7. (B) 8. (A) 9. (A) 10. (C) 13