Model Test Paper
Science
Class: 8th
Max Marks: 80
Q.1 Attempt the following Multiple Choice Questions:
- Broadcasting is a method of
- a) Weeding
- b) Irrigation
- c) Sowing
- d) Reaping
- Which one of these can make its own food?
- a) Algae
- b) Diatom
- c) Bread mould
- d) Amoeba
- Choose renewable energy resources
- a) Coal
- b) Petroleum
- c) Wind
- d) Natural Resources
- Burning of CNG is an example of
- a) Rapid Combustion
- b) Spontaneous combustion
- c) Slow combustion
- d) None of the above
- The fusion of sperms and egg produces
- a) Zygote
- b) Gamete
- c) Embryo
- d) Oviduct
- International Biodiversity day is celebrated at
- a) 22 Feb
- b) 22 March
- c) 22 April
- d) 22 May
- Deficiency of iodine in diet causes
- a) Goitre
- b) Diabetes
- c) Menopause
- d) Mensuration
- Unit of Pressure
- a) Pascal
- b) Newton
- c) Newton/m
- d) Ohm
- Which type of friction is greatest
- a) Sliding friction
- b) Rolling friction
- c) Static friction
- d) None of the above
- Sound can travel in
- a) Gases only
- b) Liquids only
- c) Solids only
- d) Gases, liquids gases all
- Rim of vehicles are coated with
- a) Gold
- b) Silver
- c) Chromium
- d) Copper
- Charge is produced by the transfer of
- a) Electrons
- b) Protons
- c) Atoms
- d) Neutrons
- Which is used to see beautiful patterns
- a) Solar filters
- b) Mirror
- c) Telescope
- d) Kaleidoscope
- Earthworm is used for preparing
- a) Compost
- b) Manure
- c) Green manure
- d) Vermicompost
- Binary fission takes place in
- a) Spirogyra
- b) Amoeba
- c) Hydra
- d) Cat
Match the Following:
- Atmospheric Pressure - Non Combustible
- Pancreas - Insulin
- Glass - Virus
- Nocturnal Animal - Owl
- HIV - Force/Area
Fill in the blanks by choosing correct answers:
- Migratory birds come to India in __________ seasons.
- __________ part of the flame is the hottest.
- Rubbing both hands produces __________ due to friction.
- Air in motion is called __________.
- Crops grown in winters are called __________ crops.
- Fungi like __________ cause food poisoning.
- Burning of coal in air produces __________ gas.
- Hertz is the unit of __________.
- The chemical substance secreted by the glands is called __________.
- Electric tester uses __________ effect of current.
(Frequency, heating, hormones, wind, carbon dioxide, rabi, heat, Aspergillus, winters, outer part)
Write True/False:
- CNG is more polluting than diesel. ( )
- Animals which lay eggs are called oviparous. ( )
- Oiling and greasing minimize the friction. ( )
- Electroplating uses heating effect of current. ( )
- Do not use an umbrella during lightning. ( )
Two Marks Questions (Do any Twelve):
- Define Weed. Name any two weeds.
- Name any two diseases caused by bacteria in Cattle?
- List two conditions under which combustion can take place?
- Write two causes of deforestation?
- Define Fertilization. Give difference between external and internal fertilization?
- Write four changes that take place at puberty?
- Paper cup catches fire easily but does not burn when water is added to it. Give reason.
- Define Friction. Write two methods to increase friction.
- What is the difference between asexual and sexual reproduction?
- Name food items good for adolescents. Define balanced diet.
- Friction is a necessary evil. Explain with an example.
- Why do electricians wear rubber shoes and rubber gloves?
- Draw a labeled diagram of Gold leaf Electroscope.
- What is a pandemic? Name any two pandemics.
- Write Laws of reflection of light and draw a diagram.
- Explain various types of coal.
- What is Ultrasound? Write one use in medical treatment.
Three Marks Questions (Do any Seven):
- Write three tips advised by Petroleum Conservation Research Association to save petrol/diesel.
- Write the difference between Manure and Fertilizer?
- Write three harmful effects of burning fossil fuels?
- Explain an activity that atmosphere exerts pressure.
- Draw a labeled diagram of the human Eye.
- Can sound travel through a vacuum? If not, explain it by an activity.
- Define Force? Differentiate between Contact and Non-Contact Force?
- Explain how Vermicompost is prepared?
- 27. Write three consequences of Deforestation.
- 28. Write three methods to reduce friction.
