Question

1. Most of the substances we see around us are
b. pure compounds.
c. impure elements.
d. mixtures.
a. pure
elements.
2. A solution of salt in water is a
a. compound
c. heterogeneous mixture.
b. homogeneous mixture.
d. element.
a. difference in colour.
c difference in weight.
b. difference in size.
d. attraction by magnet.
b. sublimation.
a. decantation
c. sedimentation
d. filtration
a. distillation
d. loading
5. Which method is used to obtain a pure liquid from a solution?
b. condensation
c. filtration
6. The temperature of a saturated solution of sugar in water is raised by 10 °C. Which of these
statements is now true?
a. It will continue to be saturated.
b. It will become unsaturated.
c. Whether it remains saturated or becomes unsaturated depends on the amount of water taken.
d. It will continue to be saturated, but if the temperature is increased beyond 10 °C it
will become unsaturated.
7. Which of the following can dissolve in water?
a. only solids
b. only solids and liquids
C, solids
A. Choose the most appropriate answer,
3. The property used in separating a mixture of two solids by winnowing is
4. The process of settling down of particles of a solid in a liquid is​

Answer 1

Answer:

most of the substance we see around us