Question

A. Choose the correct option.
1. Which of the following is not an element?
a. Graphite
b. Germanium
2. Which of the following is a compound?
a. Magnesium
b. Manganese
3. Which of the following is not a mixture?
C. Carbon dioxide
d. Hydrogen
ate an
C. Silver oxide
d. Platinum
diment
a. Milk
b. Air
C. Soil
d. Gold
4. On the basis of composition of matter, milk is considered to be:
a. a pure substance
b. an impure substance
C. an element
d. None of these
5. Which of the following statements are true for pure substances?
i. Pure substances contain only one kind of particles.
ii. Pure substances may be compounds or mixtures.
iii. Pure substances have the same composition throughout.
a. i and ii
b. i and iii
c. ii and ji
d. All statements are correct​

Answer 1

Answer:

1) Germanium

2) manganese

3) hydrogen

4)a pure substance

5)2and3

Answer 2

Answer:

1)they both are elements maybe if silicon is in option than the silicon is not an element if only these are in option then write graphite

2)manganese

3)platinum

4)milk is considered impure substance

5)i and iii