MCQ
Due to which phenomena the combination of red, green and blue forms the same white colour :
- ✓Due to persistence of vision
- BDue to reflection
- CDue to refraction
- DDue to deviation
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
Group Number
|
$IA$ | $IIA$ | $IIIA$ | $IVA$ |
|
Period
|
$1$ | $2$ | $13$ | $14$ |
|
Second
|
$Li$ | $ $ |
$C$ |
|
|
Third
|
$A$ | $Mg$ | $AI$ | $Si$ |
|
Fouth
|
$K$ | $B$ |
|
$D$ |
| $A$ | $B$ | $C$ | $D$ | |
| $(i)$ | $Cs$ | $Be$ | $Ca$ | $C$ |
| $(ii)$ | $Na$ | $Ca$ | $B$ | $Ge$ |
| $(iii)$ | $Na$ | $B$ | $Ca$ | $Ge$ |
| $(iv)$ | $Cs$ | $B$ | $Ca$ | $C$ |

| Smallest energy loss | Largest energy loss | |
| $(a)$ | $4$ | $3$ |
| $(b)$ | $2$ | $1$ |
| $(c)$ | $2$ | $3$ |
| $(d)$ | $1$ | $4$ |
