Judgement MOHAN, J. :- These writ petitions challenge the validity of the Tamil Nadu Slum Areas (Improvement and Clearance) Act. 1971 (Tamil Nadu Act 11 of 1971). (Throughout the course of our judgment, it will be referred to as the Act). 2. Since an identical point is in issue all these writ petitions. It is enough if we refer to the facts in W. P. No. 1485 of 1979 alone. The petitioner purchased portion of the property in R. S. No. 3969 /11, Tondiarpet, Madras from one A. Sundararajan, for a sum of Rs. 6,400 for the purpose of constructing therein a residential house for his living. After raising a loan from his provident fund, the petitioner made necessary arrangements for the construction of the house. Owing to some technical difficulties. The construction could not be taken up immediately. There is an oven space in R.S. No. 3968/2 which is described as Keerai Thottam. 3. The Tamil Nadu Slum Clearance Board. Madras wanted to acquire this Property. Known as Keerai Thottam, for the purpose of the Slum Clearance Board. Therefore, the Government of Taimil Nadu, the first respondent, initiated proceedings under the Act for the acquisition of the petitioner's property well. The petitioner was served with a notice under S.17 (2) of the Act. He was called upon to show cause why the lands mentioned in the schedule to the notice should not be acquired. The petitioner and the owners of the adjacent plots preferred their objection in the said acquisition contending that the lands were purchased for the purpose of putting up houses and necessary loans are being raised for the purpose of construction of houses, If the land in R.S. 3969/2 alone is acquired it would be more than enough for the purpose: the very fact that the Government have not acquired R. S. 3969/5 itself will show that there was no need to acquire the property of the petitioner. It was further urged. Since R. S. 3969/5 being in line with other survey numbers. Viz. R. S. 3969/7 to 3969/12. if it was acquired there would not be any need for acquiring the property of the petitioner. Several representations were made to the Collector of Madras. Objecting to the acquisition from 19-4-1978 till date. Representations were also made before the Chairman of the Slum Clearance Board as well as the Minister for Housing. Government of Tamil Nadu. if it was acquired there would not be any need for acquiring the property of the petitioner. Several representations were made to the Collector of Madras. Objecting to the acquisition from 19-4-1978 till date. Representations were also made before the Chairman of the Slum Clearance Board as well as the Minister for Housing. Government of Tamil Nadu. Madras. But nothing useful came out of them. The petitioner was served with an order dated 20-12-1978 from the Special Deputy Collector, and Land Acquisition Officer, Madras(3rd respondent), that the request for the exclusion of the lands could not be, considered as the lands are essentially required by the Tamil Nadu Slum Clearance Board. For implementing the Slum Clearance Scheme and therefore the petitioner was directed to hand over possession of the lands. It is at this stage questioning the validity of acquisition. This writ petition has been referred for a writ of certiorari or Mandamus to quash the acquisition proceedings and to forbear the respondents from acquiring the lands for the purpose of Tamil Nadu Slum Clearance Board under the Act. 4. The leading arguments on behalf of the petitioner in W. P. 683 of 1983. as addressed by Mr. P. Chidambaram. Are as follows:- The general law relating to acquisition is the Land Acquisition Act of 1894. That applies to all acquisitions made for a public purpose. From the point of view of the owner it is immaterial whether the land is acquired under the Land Acquisition Act or under this Act since the basis of acquisition under both the Acts is 'public purpose'. However, the provisions relating to compensation under the Act are disadvantageous and more onerous than the provisions for compensation under the Land Acquisition Act. The important differences are five in number and they are- (i) While solatium at the rate of 15% of the market value is payable in addition to the market value of the land for compensation under Central Act I of 1894. S.21 (1) of the impugned State Act specifically prohibits the payment of any solatium: (ii) Under S.23 (1) of Central Act I of 1894, a number of vital factors are required to be taken into account in determining the compensation to be awarded. There is no comparable provision in the impugned State Act and these facts are not mandatorily required to be taken into account. There is no comparable provision in the impugned State Act and these facts are not mandatorily required to be taken into account. (iii) Under Central Act 1 of 1894, a land owner not accepting the award made by the Collector may require the question to, be referred to the court and it is the award of the court which is the or