MCQ
The acute angle between lines x - 3 = 0 and x + y = 19 is ______.
- A60°
- B30°
- ✓45°
- D90°
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
i. $\ce{PO^{3-}_4}$
ii. $\ce{SO^{2-}_4}$
iii. $\ce{[Fe(CN)6]^{4-}}$
iv. $\ce{NO^-_3}$