Question
Explain, why are the exposed water pipes lagged with straw during severe winter?
✓
Answer
Water freezes at sub-zero temperature and in doing so expands (anomalous behaviour of water). So exposed water pipes during severe winter are lagged with straw so as to provide sufficient space for expansion of freezing water.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A charge of 75 C is brought from infinity to a given point in an electric field, when amount of work done is 3.75 J . Calculate the electrical potential at that point.
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A screw has a pitch equal to 0.5 mm. What should be the number of divisions on its head so as to read correctly up to 0.001 mm with its help?
Sketch four magnetic field lines as obtained in a limited space on a horizontal plane in the earth's magnetic field alone.
Distinguish between uniformly and non-uniformly accelerated motions.
Why does a ship made of iron not sink in water, while an iron nail sinks in it?
The word PLATE written on a paper is held in front of a plane mirror. Write down the letters as seen in the following case.
The paper is held parallel to the mirror.
The paper is held parallel to the mirror.
Explain the following : Toy balloons filled with hydrogen rise to the ceiling, but if they are filled with carbon dioxide, then they sink to the floor.
Explain the following statement:
Sleepers are laid below the rails.
Sleepers are laid below the rails.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
