L01|general science|physics|physical quantities|RRB-NTPC|GROUP-D|Other comp. exam

General science usefull for competitive exam.
L01|general science|physics|physical quantities|RRB-NTPC|GROUP-D|Other comp. exam
L01|general science|physics|physical quantities|RRB-NTPC|GROUP-D|Other comp. exam
L01|general science|physics|physical quantities|RRB-NTPC|GROUP-D|Other comp. exam

comp.