MCQ
What is not true about ice?
- AIt has open cage like structure
- BIt has less density than water
- CEach $O$ atom is surrounded by $4\,H$ atoms
- ✓Each $O$ atom has four $H-$ bonds around it

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A$ : Zero orbital overlap is an out of phase overlap.
Reason $R$ : It results due to different orientation/ direction of approach of orbitals.
In the light of the above statements. Choose the correct answer from the options given below.
$(a)$ Photon is a positively charged nuclear particle
$(b)$ Size of nucleus is very small as compared to the size of atom
$(c)$ Photoelectric effect and diffraction show particle nature of light
$(d)$ Planck's constant has same dimensions as angular momentum
The correct statements is/are