Question

do you think that the spirit of federalism is more effective when there is a coalition government at the centre explain with reasons

Answer 1

Yeah spirit of federalism will be more
Effective bcz before we have seen that there were only one type of gov at centre and state level and central gov tries to dominate tge state gov bit it cant happen in coalition

Answer 2

hii dear here is your answer, 
The following points may help you:
a. There has been dramatic changes in the federal sharing of power ever since Constitution has come into force.b. Federal sharing of powers among the centre and states has always been a subject matter of controversy, of discussion in Indian polity.c. The country for long period  witnessed the domination of Congress party both at the centre and at the state which prevented states to function as independent units.d. Even with the growth  and presence of regional parties at various states, states were left at the mercy of central government in terms of demanding more resources, more autonomy.e.Many a times there were cases of Centre dismissing state governments on the grounds of failure of law and order situation and declaring President rule.f. Such a situation has changed dramatically, with the advent of coalition governments at the centre that marked a new chapter in the history of federal relations .g. The coalition government marked the presence of regional parties at the centre, who are sharing power with the national party.h. The presence of regional parties have ensured that power is not misused by the centre, regional interests are promoted, centre's power to impose President's rule is not misused, adequate finances are released for the development of states etc.i.  It has also ensured that regional parties are part of the decision making process impacting the country at large.j. It has allowed regional parties to act as game changers in the Indian politics demanding special economic package for their states.k. Coalition era experiences more effective form of power sharing between the Centre and the states.   l. Moreover, with Supreme Court's judgement it has become difficult for the Centre to arbitrarily dismiss state  government . 
hope it helps u !!!