Difference between Mixtures and Compounds

Q. In mixtures, a new compound is formed.

1. True
2. False

Q. Sulphur is an element, air is a compound, and steam is a mixture.

1. True
2. False

Q. During distillation, condensation is followed by boiling.

1. True
2. False

Q. Pentane and heptane are ____ liquids and can be separated by ____ method.

1. Miscible, Seperating funnel
2. Miscible, Distillation
3. Immiscible, Seperating funnel
4. Immiscible, distillation

Q. What do you understand by

(b) Hard water

Q. Among the following pair of compounds, the one that illustrates the law of multiple proportions is:

1. $N{H}_3\text{and}NC{l}_3$
2. $H_{2}S\text{and}S{O}_2$
3. $C{S}_2\text{and}FeS{O}_4$
4. $CuO\text{and}C{u}_{2}O$

Q.

Which of the following is not deliquescent substance:-

1. Magnesium chloride

2. Calcium chloride

3. Glauber's salt

4. Caustic soda

Q. Choose the correct pairs of substances and their types.

1. Brass
2. Soil
3. Copper wire
4. Homogeneous mixture
5. Heterogeneous mixture
6. Pure substance

Q. Is the Law of Constant/Definite Proportion applicable for different isotopes of same element?