Which of the statements about glass are correct? 1. Glass is a super-cooled liquid having infinite viscosity. 2. Violet coloured glass is obtained by adding \[Mn{{O}_{2}}\]. 3. Glass is a man-made silicate. 4. Glass is a crystalline substance. Select the correct answer using the codes given below.

Which of the statements about glass are correct? 1. Glass is a super-c

1.	Which of the statements about glass are correct? 1. Glass is a super-cooled liquid having infinite viscosity. 2. Violet coloured glass is obtained by adding \[Mn{{O}_{2}}\]. 3. Glass is a man-made silicate. 4. Glass is a crystalline substance. Select the correct answer using the codes given below.
A.	1, 2 and 4
B.	2, 3 and 4
C.	1, 2 and 3
D.	1 and 3
Answer» E.