Advertisements
Advertisements
प्रश्न
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 ?
Advertisements
उत्तर
- 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
संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Fill in the blank
Liquids have a definite ______
All kinds of matter
Explain why steel is used to make railway lines.
Draw a flow-chart for the schematic representation of different types of matter.
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
What is the most common way of expressing the concentration of a solution ?
Explain what happens when a beam of light is passed through a colloidal solution.
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
What difference in the properties of oil and water enable their separation by a separating funnel ?
Name the process by which common salt is obtained from sea-water.
How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).
Which of the following mixture cannot be separated by using water as the solvent ?
Pure copper sulphate can be obtained from an impure sample by the process of :
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
All the matter made of ______.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
