What are the specific changes made to the Constitution by the Seventh Amendment Act, 1956, s. 29 and Sch., with regard to taxes levied and collected by the Union but assigned to the States?
The specific changes made to the Constitution by the Seventh Amendment Act, 1956, s. 29 and Sch., with regard to taxes levied and collected by the Union but assigned to the States are:

1. Omitted the words "or Rajpramukh" from a context mentioned in the question.

2. Substituted "State Specified in Part C of the First Schedule" for "State Specified in Part C of the First Schedule".