हिंदी

What is the Other Name for Impure Substances ? Give Two Examples of Impure Substances. - Science

Advertisements
Advertisements

प्रश्न

What is the other name for impure substances ? Give two examples of impure substances.

टिप्पणी लिखिए

उत्तर

Mixture is considered as an impure substance, as it contains two or more different kinds of particles or substances mixed together.

Examples: Milk, sea water

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ ५७]

APPEARS IN

लखमीर सिंग Chemistry [English] Class 9
अध्याय 2 Is Matter Around Us Pure
Very Short Answers | Q 27 | पृष्ठ ५७

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

What do you mean by the inter-molecular spaces? How do they vary in different states of matter?


Solids have definite shape and definite volume. 


When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?


What are the characteristics of matter?


In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?


Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea


Classify the following into elements, compounds and mixtures :

arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk


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.

  1. What type of substance is B ?
  2. What type of substance is C ?
  3. Name the gas (i) D, and (ii) E ?
  4. State one characteristic property of gas D.
  5. Write one test to identify gas E.

State whether the following statement is true or false :

Sponge is an example of solid sol.


Which of the following will show Tyndall effect ? Why ?

  1. Salt solution
  2. Starch solution
  3. Milk
  4. Copper sulphate solution

What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?


What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?


What difference in the property of two miscible liquids enables their separation by fractional distillation ?


Name the process which can be used to recover salt from an aqueous salt solution.


How is the impurity of iron present in several substances removed in industries ?


One of the following does not undergo sublimation. This one is :


Which of the following are homogeneous in nature?

(i) ice

(ii) wood

(iii) soil

(iv) air


Complete the following table:

S.No. CELSIUS KELVIN
1. 90°C 363 K
2. ______ 283 K
3. 63 °C ______
4. 250°C ______
5. ______ 303 K

Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×