At $$0{ }^{\circ} \mathrm{C}$$ a gas occupies 22.4 liters. What is the temperature in Kelvin to reach the volume of 224 liters?

Which from following rule / principle states that "No two electrons in an atom can have the same set of four quantum numbers"?

Which from following molecules exhibits highest acidic nature?

What is the number of moles of $$\mathrm{sp}^2$$ hybrid carbon atoms in one mole of hexa-1,4-diyne?