Advertisements
Advertisements
Question
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
Advertisements
Solution
Centrifugation is a technique used in a washing machine to squeeze out water from wet clothes while drying.
APPEARS IN
RELATED QUESTIONS
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
State two physical properties on the basis of which metals can be distinguished from non-metals.
State any two properties for believing that aluminium is a metal.
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
One of the following does not show Tyndall effect. This one is :
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How will you separate a mixture of common salt, sulphur powder and sand ?
The boiling point of liquid argon is :
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
______ is not made of matter.
Define the term matter.
Define the term matter.
