Question

Check your prezi
Answer these questions.
1. Which metal is the most widely used and also the cheapest?
2. Which metal is used for making concave mirrors for astronomical telescopes.
3. Which of the following is a poor conductor of electricity?
aluminium, copper, lead
4. Which gas is used to manufacture ammonia and nitric acid?
5. Which metalloid is used for making prisms and lenses?
of iron​

Answer 1

Explanation:

1. iron

2. aluminum

3. aluminum

4.nitrogen and hydrogen

5th question is difficult I don't know this question answer so. sorry

I hope this is helpful for you

Answer 2

Explanation:

Germanium IS THE RIGHT ANSWER QUESTION 5