Question

Match the following:
$\begin{array}{cc}ColumnI& ColumnII\\ 1.Diamond& i.Crystalline\\ 2.Coke& ii.Amorphous\\ 3.Rubber& \\ 4.Plastic& \end{array}$

• A. 1-(i), 2-(i), 3-(ii), 4-(ii)
• B. 1-(ii), 2-(i), 3-(i), 4-(i)
• C. 1-(i), 2-(ii), 3-(ii), 4-(ii)
• D. None of these

Answer 1

The correct option is C

1-(i), 2-(ii), 3-(ii), 4-(ii)

How do we approach this problem??

There are some solids given and we have to figure out whether these are crystalline or amorphous.

So, we have to look at the properties of each compound.

As we already know the properties of crystalline and amorphous.

Diamond $\to$ (i) Fixed melting point

(ii) Regular 3-d arranged structure

(iii) Anisotropic

Coke, Rubber, Plastic} $\to$ (i) A range of melting point

(ii) Not a regular 3-d arranged structure

(iii) Isotropic

Therefore, Diamond $\to$ Crystalline

Coke, Rubber, Plastic } $\to$ Amorphous