Yes there are lots of sites are available for LIC AAO..Some sites are chargable means you have to purchase mock test & some are free..I mensioned some names here You can directly google it..& go through the gmfurther direction..You will get the tests

Olievboard(Purchase & Free both)

Gradeup(Sectional test are free &Full lengh is chargable)

Testbook(Yearly/Monthly Charge Available for All exam in One)

Iexambee(All tests are free)

Testfunda(Chargable)