Agree
Disagree
0
50
100
120
single cylinder petrol engine
four stroke engine
single cylinder diesel engine
multi-cylinder engine
absorbs neutrons
does not absorb neutrons
accelerates neutrons
none of these
opens at 30 Degree before bottom dead cnetre and closes at 10 Degree after top dead centre
opens at 30 Degree after bottom dead centre and closes at 10 Degree before top dead centre
opens at bottom dead centre and closes at top dead centre
may open and close anywhere