List of top Questions asked in AP PGECET- 2026

The Boudouard reaction (\( \text{C} + \text{CO}_2 \rightleftharpoons 2\text{CO} \)) in smelting is:

The slag's basicity index (B) in pyrometallurgy is defined as:

According to the second law, which of the following is impossible?

Rusting of iron occurs due to formation of

In a galvanic couple, which metal acts as anode?

A perfect black body:

Comminution energy requirement is quantitatively estimated using:

Which factor increases the rate of diffusion in solids?

Which type of corrosion protection involves connecting the metal to be protected to a more reactive "sacrificial" metal?

The Pourbaix diagram represents the metal's:

Which of the following is an example of convection?

Diffusion in solids is faster when

Diffusion in metals generally increases with

The Arrhenius expression for diffusion coefficient (D) is:

Reaction order describes dependence of rate on

High temperature corrosion mainly involves

Aqueous corrosion of metals generally involves

Radiation heat transfer occurs through

The driving force for diffusion is

Ellingham diagrams are mainly used to determine:

The equilibrium constant of a reaction depends mainly on:

Bernoulli's equation relates

Diffusion governed by concentration gradient follows

The first law of thermodynamics is based on the principle of: