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 %
Half-life pf a radioactive element is :
0.693
C.
For 1st order reactions (like radioactive decay) _ t1/2 =