Test Series All Series / Exam Mock Tests / BTSC Lab Assistant (CSE/IT) / Operating System Mock Test Series for BTSC Operating System Mock Test Series for BTSC Showing 5 tests Operating System Mock Test 5 for BTSC (Final Mixed) FREE 20 Qs • 20 Marks • 20 Min Start Operating System Mock Test 4 for BTSC (Mixed) FREE 20 Qs • 20 Marks • 20 Min Start Operating System Mock Test 3 for BTSC (Advanced) FREE 20 Qs • 20 Marks • 20 Min Start Operating System Mock Test 2 for BTSC (Medium) FREE 20 Qs • 20 Marks • 20 Min Start Operating System Mock Test 1 for BTSC (Basic) FREE 20 Qs • 20 Marks • 20 Min Start