Heterogeneous Mixtures

Q. Air is a heterogeneous mixture or homogeneous mixture.

Q. Is a mixture of iron foil and sulphur -- a homogeneous or a heterogeneous mixture? Explain.

Q.

Is the mixture of bran and flour a homogeneous or heterogeneous mixture?

Q. Two substances that physically combine and appear same throughout is:

1. A heterogeneous mixture
2. A homogeneous mixture
3. A compound
4. An element

Q.

What are homogeneous and heterogeneous mixtures

Q. Which of the following statement(s) is/are false?
1. A pure substance is heterogeneous in nature.
2. The composition of a pure substance can be altered by any physical means.
3. A pure substance contains a fixed number of particles.

1. 1 and 2
2. 1 and 3
3. 2 and 3
4. All are correct

Q.

Give one example of Solid and solid (heterogeneous) mixture.