Exams › JEE Main › Chemistry

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be

1. tin
2. sodium
3. magnesium
4. mercury

Correct answer: tin

Solution

In the float-glass (Pilkington) process molten glass is floated on a bath of molten tin, which stays liquid in the relevant temperature range and gives a flat surface. The metal used is tin.

Related JEE Main Chemistry questions

• Glass is classified as a
• In the wurtzite crystal lattice, what are the coordination numbers of Zn2+ and S2- respectively?
• In KBr, the coordination number of each ion changes from X to Y when the crystal is subjected to which condition?
• How many carbon atoms are present in one unit cell of the diamond crystal structure?
• A sodium chloride crystal has a pycnometric density of 2.165 × 10³ kg m⁻³ and an X-ray density of 2.178 × 10³ kg m⁻³. What fraction of lattice sites are vacant in the crystal?
• Which set of unit-cell parameters represents a cubic lattice, if the edge lengths are a, b, c and the interaxial angles are α, β, and γ?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →