Sydney: The Australian Government's plan to introduce citizenship test for migrants has been criticised by members of the ruling coalition who say it is a step towards reintroducing a racially discriminatory immigration policy.

Under the new plan announced by Australian Prime Minister John Howard, people applying for Australian citizenship need to pass a basic English language test, a general knowledge test relating to the various aspects of the country and, most importantly, need to learn about 'mateship', a concept where everybody pulls together in case of any national crisis.

"We will retain a non-discriminatory immigration policy. We will not be discriminating on the basis of race or ethnicity or nationality when choosing new migrants," Howard said while strongly defending his new policy.

Victorian Liberal moderate MP Petro Georgiou Monday indicated he might not support the changes, signalling a possible split in the coalition.

"I am concerned that the toughening of the requirements would create unreasonable barriers to the acquisition of citizenship and will prevent people who would make a wonderful contribution to Australia from becoming citizens," Georgiou said.

Another Victorian Liberal MP Russell Broadbent said, "The questions could be very difficult for many immigrants."

The proposed legislation is likely to be introduced in February next year.

Howard insisted it was not too harsh to expect migrants to be able to speak English and know about Australian culture and society after spending four years in the country.

After successfully completing the test, applicants will have to sign a statement confirming they are aware of and understand Australian society's values, including respect for freedom and dignity of the individual, equality of men and women, freedom of religion, commitment to the rule of law and democracy, according to the Australian newspaper.

Recent terror attacks across major cities of the world has prompted the Australian government to make its immigration and citizenship law tougher.

Already, residency requirements have sharpened. Immigrants now have to wait at least four years instead of two before being able to apply for citizenship.