Question

C.
Choose the correct option,
1. Silicon and arsenic are
(a) metals
(b) non-metals
(c) metalloids
(d) noble gases
2. Noble gases are present only in traces in
(a) air
(b) earth's crust (c) oceans
(d) all of these
3. The symbol of lead is
(a) Pb
(b) L
(c) Le
(d) PI
4. Which of these cannot be separated by filtration?
(a) A mixture of chalk powder and water (b) A mixture of sand and water
(c) A mixture of sugar and milk
(d) A mixture of rice and milk
5. The insoluble solid left behind on the filter paper during filtration is called
(a) filtrate
(b) particle
(c) residue
(d) sediment
6. Which of the following can be used in addition to filter paper in the process of filtration?
(d) All of these
(a) Glass wool
(b) Unglazed porcelain (c) Cotton​

Answer 1

Answer:

1 Silicon and arsenic are metalloids

3 pb

Answer 2

Answer:

1.c Metalloids

2d all of these

3.a pb

4.c a mixture of sugar and milk

5.c residue

6.c cotton.