Question

Q.Multiple Choice Questions
1. Metals react with oxygen to form their oxides which are generally :
(a) neutral in
(b) acidic in nature (c) basic in nature (d) none of these
2. Which of the following statements
is correct?
(a) All metals are ductile
(b) All non-metals are ductile
(c) Metals are generally ductile
(d) Non-metals are generally ductile.
3. Which of the following is malleable?
(a) Carbon
(b) Phosphorus
(c) Sulphur
(d) Aluminium
4. Phosphorus is a non-metal. When burnt in air, it forms dense white fumes which dissolve
in water to form an acid. The acid so formed is:
(a) hydrophosphorus acid (b) phosphorous acidC) phosphoric acid (d) none of these.
5. Gold, silver, copper, zinc, etc., are placed in the category of :
(a) Metals
(b) Non-metals
(c) Metalloids
(d) None of these
6. Oxygen, hydrogen, carbon, sulphur, phosphorous, etc., are placed in the category of :
(a) Metals
(b) Non-metals
(C) Metalloids
(d) All of these
7. Some elements neither fit with the metals nor with non-metals, they are called
(a) Metalloids
(b) Mixtures
(c) Compounds
(d) All of these
8. Boron, silicon, germanium, etc., are the examples of :
(a) Metals
(b) Non-metals
(c) Metalloids
(d) None of these
9. The property of metals by which they can be beaten into sheets, is :
(a) Density
(b) Lustre
(c) Ductility
(d) Malleability
10. Substances (metals) conduct heat and electricity because of the property of :
(a) Ductility
(b) Conductivity
(c) Malleability
(d) Tensile strength​

Answer 1

Answer:

1. C . basic in nature

2. a. all metals are ductile

3 . d . aluminum

4. C. phosphoric acid

5. a. metals

6. b. non metals

7. a. metalloids

8. C. metalloids

9. d. malleability

10. b. conductivity

Answer 2

Explanation:

Non metals react with oxygen to form

Acidic oxides

Basic oxides

Neutral oxides

None of these