Question

1. Hydrogen is a color gas with a smell of rotten eggs.
2. Two elements are liquid at room temperature are mercury and
3. In colloids, the particles are called the - phase and the medium in which they
are distributed is called the
4. Properties of a
are different from its constituent elements, whereas a
shows the properties of its constituting elements.
5. An element is made up of only one kind of
6. Miscible liquids are separated by
7. Immiscible liquids are separated by using a
8. Sublimation of camphor is a
change.
9. Air is regarded as a mixture because:
a)Its pressure may very
b)lts temperature may change
c)lts volume changes under different conditions
d)lts composition may vary
10. Which of the following is a compound?
a)Stainless steel​

Answer 1

Answer:

1. hydrogen sulphide
2. bromine

Answer 2

1) Hydrogen sulfide is a flammable, colorless gas with a characteristic odor of rotten eggs.

2) Francium and Gallium

3) Aerosol

4) Properties of a compound are different from its constituent elements, whereas a mixture shows the properties of its constituting elements or compounds.

5) Protons, Electron, neutron

6) Fractional ditillation