List of top Physics Questions on The solid state

The coagulating power of electrolytes having ions Na$^+$, Al$^{3+$ and Ba$^{2+}$ for As$_2$S$_3$ sol increases in the order}
P and Q combine to form two compounds \( PQ_2 \) and \( PQ_3 \). If 1 g \( PQ_2 \) in 51 g benzene gives depression of freezing point \(0.8^\circ C\) and 1 g \( PQ_3 \) gives \(0.625^\circ C\). ( \(K_f = 5.1\) ). Find atomic masses of P and Q.
If three elements A, B, C crystallise in a cubic lattice with B at cube centres, C at edge centres and A at corners, the formula of the compound is

Identify the logic operation performed by the following circuit. 
 

A reverse biased zener diode when operated in the breakdown region works as:

Identify the logic gate given in the circuit: 


 

The nucleus having highest binding energy per nucleon is:
For a particle inside a uniform spherical shell, the gravitational force on the particle is: