Advertisements
Advertisements
प्रश्न
Define solvent.
Advertisements
उत्तर
Solvent is a liquid or a medium in which the solute is dissolved.
Example: Water
APPEARS IN
संबंधित प्रश्न
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
What are the characteristics of matter?
Name one element, one compound and one mixture.
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
What is the other name for impure substances ? Give two examples of impure substances.
Name two solid, two liquid and two gaseous elements at the room temperature.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
The element which is not common between the compounds called baking soda and soda ash is
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.
In what respects does a true solution differ from a colloidal solution ?
Explain what happens when a beam of light is passed through a colloidal solution.
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.
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
Name the source from which nitrogen and oxygen are obtained on a large scale.
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
The fluidity of solids: ______.
Give an example of a molecule.
