can i use dual supply op amp in single supply mode?
You have asked two complementary questions.
Did you mean to? 



Yes, but ... . 

As long as you do not violate any of the specifications it will work.
In many cases that puts excessive constraints on your design.
Most dual supply opamps have an input voltage range that does not include either supply rail. And Vout often does not swing all the way to positive or negative supply.
Some opamps are sold as RIRO where
RI = Rail IN   and
RO = Rail  

RI means the input voltage can swing all the way to both rails during operation. 

And RO means that the output can swing all the way to both rails during operation. 

However even an RO opamp may not swing QUITE all the way to the rails. Sometimes the few mV matters. 

A very few oamps have internal power supplies which supply voltages outside the rails so the input and output can swing TO the rails.