Metals

Q.

Which of the following is a metal?

1. Scandium

2. Phosphorous

3. Iodine

4. Graphite

Q. Metal which occurs in the native state is

1. $Pt$
2. $Na$
3. $Ca$
4. $Mn$

Q.

The constituent of haemoglobin is _______.

1. Iron

2. Sodium

3. Magnesium

4. Copper

Q.

Observe the table and identify metals and nonmetals. Select the correct option.
$\begin{array}{ccc}\text{Sl.No}& \text{Set}-1& \text{Set}-2\\ 1.& \text{Sodium(Na)}& \text{Oxygen(O)}\\ 2.& \text{Magnesium(Mg)}& \text{Chlorine(Cl)}\\ 3.& \text{Iron(Fe)}& \text{Helium(He)}\\ 4.& \text{Gold(Au)}& \text{Sulphur(S)}\\ 5.& \text{Calcium(Ca)}& \text{Carbon(C)}\end{array}$

1. Set - 1 (nonmetals) and Set - 2 (Metals)

2. Both Sets - 1 & 2 are Metals

3. Both Sets - 1 & 2 are nonmetals

4. Set - 1 (Metals) and Set - 2 (nonmetals)

Q.

Which of the following metal is the main constituents of haemoglobin?

1. Na

2. Cu

3. Fe

4. Mg

Q.

The valency of magnesium is _____.

1. 2

2. 1

3. 3

4. 4

Q. Electrostatic forces of attraction operate between oppositely charged particles of an atom.

1. False
2. True

Q. Ionisation energy of helium is that of hydrogen.

1. more than
2. less than
3. equal to

Q. Match the following regions with the maximum no. of electrons they can hold.

1. 8
2. 18
3. 2

Q. gold is the purest form of gold.

1. 22 Carat
2. 24 Carat
3. 26 Carat
4. 23 Carat