Advertisements
Advertisements
Question
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 ?
Solution
- Tincture iodine is a mixture of two materials X and Y. So, X is alcohol.
- The material Y has a property and its solid form can be converted directly into vapours on heating by the process called Z. So, Y is iodine.
- Process Z is called sublimation.
- Process used to recover both the components, i.e., alcohol and iodine, from the tincture of iodine is distillation.
- The process used to recover component Y only from the tincture of iodine is evaporation.
APPEARS IN
RELATED QUESTIONS
Define matter. Give four examples of matter.
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
Explain what happens when a beam of light is passed through a colloidal solution.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Name the process by which the various gases of the air are separated.
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
The property which allows the metals to be hammered into their sheets is ______.
Why wires cannot be drawn from materials such as stone or wood?
All the matter made of ______.
______ is a smallest particle.
Which among the following is not a matter?
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
Rusting of an article made up of iron is called
The most reactive metal is ______.
Solid is an arrangement of particles ______.
Boiling refers to the process by which a substance changes from the liquid to the gaseous state at its ______ point.
