Which of the following organo - silicon compound on hydrolysis will give a three dimensional silicone ?
R3SiCl
RSiCl3
SiCl4
R2SiCl2
Half-life of radioactive substance is 4 days . Amount of the substance decayed in two days is :
1 -
20 %
Which gives nucleophilic addition most easily :
CH3CHO
CH3CH2CHO
(CH3)2CHCHO
HCHO
D.
HCHO
Among carbonyl compounds , reactivity decreases with increase in alkyl group as these groups (due to + I effect) decrease polarity of x = O bond .Hence HCHO is the most reactive .