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Science-8-Model-Paper

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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: ____________________________________________________
______________________________________________________________________
______________________________________________________________________
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(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
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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
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