NEET 2017 APRA
Instructions
For the following questions answer them individually
Question 134
A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?
Question 139
It is because of inability of $$ns^2$$ electrons of the valence shell to participate in bonding that
Question 140
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?
