is an example of which of the following types of reactions
Substitution
Elimination
Addition
Rearrangement
This is an example of substitution reaction. Hydrogen atom of alkane is replaced by halogen atom
Vitamin B12 contains metal
[Bihar MEE 1997; RPET 1999; Pb. PMT 1999; AFMC 2002;
CBSE PMT 2003; CPMT 2003; MP PMT 2003]
The kinetic energy and potential energy of a particle executing simple harmonic motion will be equal, when displacement (amplitude = a) is
[MP PMT 1987; CPMT 1990; DPMT 1996;
MH CET 1997, 99; AFMC 1999; CPMT 2000]