1. 2. Model Paper for Entry Test of Science for ADMISSION to CLASS 8 (Max. Marks: 25) Choose the best option (1.0×13) (i) The process of changing the food into simpler form is called: (A) respiration (B) digestion (C) circulation (D) photosynthesis (ii) Blood vessels that bring blood back to the heart are called: (A) arteries (B) veins (C) capillaries (D) nerves (iii) ________________ tissues carry water from roots to the leaves. (A) Phloem (B) Mesophyll (C) Mascular (D) Xylem (iv) The transfer of pollen grains from the anther of a flower to the stigma is called: (A) pollination (B) transpiration (C) respiration (D) reproduction (v) In the given food chain leaves caterpillar bird hawk leaves are: (A) tertiary consumers (B) secondary consumers (C) primary consumers (D) producers (vi) _________________ are the harmful and unwanted substances in water. (A) fish (B) stones (C) pollutants (D) aquatic plants (vii) _______________ revolves around the nucleus of an atom and carries a negative change. (A) proton (B) electron (C) neutron (D) molecule (viii) The atomic number of carbon is 6. Its mass number is 12. How many neutrons are present in its atom. (A) 6 (B) 12 (C) 24 (D) Nil (ix) Which of the following is a chemical change? (A) boiling of water (B) evaporation of water (C) burning of paper (D) melting of ice (x) The transfer of heat energy from a hot body to a cold body directly without heating the space between the two bodies is called: (A) conduction (B) convection (C) radiation (D) insulation (xi) A band of seven colours obtained by passing white light through a prism is called: (A) a spectrum (B) a periscope (C) a mirage (D) reflection of light (xii) ______________ is the shortest distance between two adjacent crests or troughs of a transverse wave. (A) Amplitude (B) Frequency (C) Wavelength (D) Speed (xiii) When there are more than one path for a current to flow, the circuit is called: (A) series circuit (B) parallel circuit (C) open circuit (D) closed circuit Give short answers to the following: (2.0×6) (i) What do you understand by oxygenated and deoxygenated blood? Oxygenated Blood: ______________________________________________________ ______________________________________________________________________ ______________________________________________________________________ Deoxygenated Blood: ____________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 1/2 (ii) Write two ways in which the fresh water gets polluted. 1. ____________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ 2. ____________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ (iii) Explain the atomic structure of oxygen atom, in terms of sub-atomic particles. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ (iv) What is meant by good conductors and bad conductors of heat? Also give one example of each. Good conductors: _______________________________________________________ ______________________________________________________________________ ______________________________________________________________________ Example: ______________________________________________________________ Bad conductors: ________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ Example: ______________________________________________________________ (v) Why do we see colours of different objects? ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ (vi) Label the following parts of a flower in the given figure: Petal; Sepal; Carpel; Stamen 2/2 SYLLABUS of SCIENCE for ADMISSION to CLASS 8 Parts of an Ecosystem (population & community), Types of Ecosystem, Adaptations in Plants and Animals, Flow of Energy in an Ecosystem, Food Web, Recycling of the Nutrients in an Ecosystem Human Digestive Respiratory and Circulatory Systems, Absorption and Transport throughout the Plant Body, Kinds of Reproduction in Plants, Structure of a Typical Flower, Pollination & its kinds, Pollinators, Fertilization in Plants, Formation and Structure of Seed & Fruit Atomic Number and Mass Number, Basic Electronic Configuration and Atomic Structure of First 18 Elements of the Periodic Table, Valency, Formation of Ions ,Writing Chemical Formulae of Ionic Compounds, Physical and Chemical Changes, Cleaning of Water, Water Pollution Flow of Current, Voltage & Resistance, Parallel & Series Circuits, Ohm’s Law, Longitudinal and Transverse Waves, Amplitude, Frequency, Wavelength, Pitch, Loudness, Refraction of Light in Air/Glass/Water; Dispersion of Light by a Prism; Spectrum of White Light, Conduction, Convection, Radiation and their daily life applications, Conductors and Insulators 3/2