Heterogenous Mixture

Q.

what is the difference between uniform and non uniform composition? And also are uniform composition and definite composition the same?

Q.

A mixture of sulfur and carbon disulfide is

1. heterogeneous and shows Tyndall effect

2. homogeneous and shows Tyndall effect

3. heterogeneous and does not show Tyndall effect

4. homogeneous and does not show Tyndall effect

Q.

Alloys cannot be separated by physical means, though it is considered mixture, Why?

Q.

Mention the types of mixture on what basis they are classified

Q.

Pizza is a ____ mixture of dough, sauce, cheese, and other toppings.

1. heterogeneous mixture

2. pure mixture

3. colloidal solutions

4. homogeneous mixture

Q. Question 8 (d)
Identify the solutions among the following mixtures.
d. Coal

Q. Question 2
List the points of differences between homogeneous and heterogeneous mixtures.

Q.

Gunpowder is an example of __________mixture.

Q.

What are the favorable qualities given to gold when it is alloyed with copper or silver for the purpose of making ornaments?

Q. Cough syrups need to be shaken before use. Explain the reason.

Q.

Cookies and ice cream would be classified as

1. Heterogeneous mixture

2. Element

3. Homogeneous

4. Compound

Q.

A mixture of sand and salt is a __________ (homogeneous/heterogeneous) mixture.

Q. Question 8 (b)
Identify the solutions among the following mixtures.
b. Sea water

Q.

Ice cubes in water form a ___________(homogeneous/heterogeneous mixtures)

Q.

10) Copper is mixed with gold to make ornaments because alloying

1. increases the hardness of gold

2. increases the malleability of gold

3. makes gold a very good conductor of heat

4. decreases its fusibility

Q. A heterogeneous mixture has a uniform composition and distribution of particles throughout.

1. True
2. False

Q.

Gunpowder is a __________

1. solid-liquid homogeneous mixture

2. solid-liquid heterogeneous mixture

3. solid-solid homogeneous mixture

4. solid-solid heterogeneous mixture

Q. Write the principle behind the given separation techniques along with an example:
a) Centrifugation
b) Sublimation
c) Filtration

Q.

In a solution, there is homogeneity at the particle level..Means??With an example

Q.

Taking mixture of iron filling & sulphur as example, State 4 characteristics of a mixture

Q.

Classify the following as homogeneous and heterogeneous mixture:

Salt solution

Q.

A pure substance is always __________ (homogeneous / heterogeneous)

Q. How we can identify heterogeneous and heterogeneous mixture?

Q.

Which of the following is an example of a mixture ?

1. Sugar

2. CO₂

3. NO₂

4. brass

Q.

A true solution is a homogeneous mixture.

1. True
2. False

Q.

(a) State important differences between homogeneous and heterogeneous mixtures

(b) Classify the following as homogeneous and heterogeneous mixtures:

Air, soil, oil and water mixture, ethyl alcohol and water mixture, sugar solution, vinegar

Q.

Five 2 reasons why sugar solution is considered to be a mixture.

Q.

Assertion (A): All pure substances are homogeneous.

Reason (R): Pure substances are made up of only one kind of molecule and they are uniformly distributed.

1. Both A and R are true and R is the correct explanation of A.

2. Both A and R are true, but R is not the correct explanation of A.

3. A is true and R is false.

4. A is false and R is true.

Q.

The homogeneous solids, arranged symmetrically, directed at definite angles and having a definite geometrical shapes are called _______ .

1. Amorphous Solid

2. Cubes

3. Crystals

4. Solid

Q.

Constituents of a mixture can be separated by physical methods.

1. True

2. False