is there partial markin for multiple choice questions

There is no partial credit.
On the revised GRE, there are several question types in which you need to choose more than 1 answer (Sentence Equivalence, multi-blank Text Completions, and multiple-answer Reading Comprehension.) For each of these question types, you need to select all correct answers in order to get the question correct.
OR LIKE

for example if a question has A,C correct option. then

-- if you will answer A,C,D then u will get zero.(exceed the number of correct choice)

-- if you will answer B,D then u will get zero.( does not include any correct choice)

-- if u will answer A,D then you will get partial marking.( include 1 correct choice)

-- if u will answer A then u will get partial marking ( include 1 crrect choice.)

-- if u will answer A.c then u will get full marks ( include all the correct choice)