Questions

3 is incorrect.

The total number of members in the Legislative Council of a State having such a Council shall not exceed one-third of the total number of members in the Legislative Assembly of that State: Provided that the total number of members in the Legislative Council of a State shall in no case be less than forty.

Of the total number of members of the Legislative council of a State-

(a) as nearly as may be, one-third shall be elected by electorates consisting of members of municipalities, district boards and such other local authorities in the State as Parliament may by law specify;

(b) as nearly as may be, one-twelfth shall be elected by electorates consisting of persons residing in the State who have been for at least three years graduates of any university in the territory of India or have been for at least three years in possession ofqualifications prescribed by or under any law made by Parliament as equivalent to that of a graduate of any such university;

(c) as nearly as may be, one-twelfth shall be elected by electorates consisting of persons who have been for at least three years engaged in teaching in such educational institutions within the State, not lower in standard than that of a secondary school, as may be prescribed by or under any law made by Parliament;

(d) as nearly as may be, one-third shall be elected by the members of the Legislative Assembly of the State from amongst persons who are not members of the Assembly;

(e) the remainder shall be nominated by the Governor in accordance with the provisions of clause.

There are only seven states which have two-tier of legislature –Uttar Pradesh, Maharashtra, Bihar, Karnataka, Andhra Pradesh, Telangana and Jammu & Kashmir.

All  are  correct.  Preamble  is  non-justiciable    in    nature    i.e.    its provisions  are  not  enforceable  in court of  law.  Preamble  is  neither  a source of power to legislature nor a prohibition   upon the   powers   of legislature.