MCQ
Which of the following properties show gradual decrease with increase in atomic number across a period in the periodic table
- AElectron affinity
- BIonization potential
- CElectronegativity
- ✓Size of atom
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.


[Given: The threshold frequency of platinum is $1.3$ $\times 10^{15} \,s ^{-1}$ and $h =6.6 \times 10^{-34} \,J \,s$.]

$CaCO _3( s ) \rightleftharpoons CaO ( s )+ CO _2( g )$
For this equilibrium, the correct statement(s) is (are)
$(A)$ $\Delta H$ is dependent on $T$
$(B)$ $K$ is independent of the initial amount of $CaCO _3$
$(C)$ $K$ is dependent on the pressure of $CO _2$ at a given $T$
$(D)$ $\Delta H$ is independent of the catalyst, if any