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Oil film formed on water reduces surface tension and makes the mosquito larvae to sink, they die
control mosquitoes breeding.
gideon1 answered the question on September 25, 2017 at 10:38
- How does oil reduce friction in moving parts of a machine?(Solved)
How does oil reduce friction in moving parts of a machine?
Date posted: September 25, 2017. Answers (1)
- The reading on a burette is 7.6 cm3. Three drops of water each of volume 0.6 cm3 drops out. Find the new reading.(Solved)
The reading on a burette is 7.6 cm3. Three drops of water each of volume 0.6 cm3 drops out. Find the new reading.
Date posted: September 25, 2017. Answers (1)
- How to calculate capacitance(Solved)
How can one calculate capacitance?
Date posted: September 25, 2017. Answers (1)
- Define moment of a force?(Solved)
Define moment of a force?
Date posted: September 25, 2017. Answers (1)
- Two thin blankets are warmer than a single thick one. Explain.(Solved)
Two thin blankets are warmer than a single thick one. Explain.
Date posted: September 25, 2017. Answers (1)
- How does the shiny surface of the thermos flask reduce heat loss.(Solved)
How does the shiny surface of the thermos flask reduce heat loss.
Date posted: September 25, 2017. Answers (1)
- Explain why flames go up.(Solved)
Explain why flames go up.
Date posted: September 25, 2017. Answers (1)
- Differentiate between a beam and ray of light.(Solved)
Differentiate between a beam and ray of light.
Date posted: September 25, 2017. Answers (1)
- What is a ray of light?(Solved)
What is a ray of light?
Date posted: September 25, 2017. Answers (1)
- State factors which determine the type of shadow formed.(Solved)
State factors which determine the type of shadow formed.
Date posted: September 25, 2017. Answers (1)
- Define the term eclipse as used in physics.(Solved)
Define the term eclipse as used in physics.
Date posted: September 25, 2017. Answers (1)
- How is local action corrected in a simple cell?(Solved)
How is local action corrected in a simple cell?
Date posted: September 25, 2017. Answers (1)
- Define focal length(Solved)
Define focal length
Date posted: September 24, 2017. Answers (1)
- State the difference between Principal axis and Principal focus (Solved)
State the difference between Principal axis and Principal focus
Date posted: September 24, 2017. Answers (1)
- State the properties of lens(Solved)
State the properties of lens
Date posted: September 24, 2017. Answers (1)
- Give two types of lenses(Solved)
Give two types of lenses
Date posted: September 24, 2017. Answers (1)
- Give three uses of lens(Solved)
Give three uses of lens
Date posted: September 24, 2017. Answers (1)
- Define a lens(Solved)
Define a lens
Date posted: September 24, 2017. Answers (1)
- Define matter(Solved)
Define matter
Date posted: September 24, 2017. Answers (1)
- State three properties of liquids used in the brake fluid.(Solved)
State the properties of a hydraulic brake fluid.
Date posted: September 24, 2017. Answers (1)