81.
Parliament may make law on a subject enumerated in State list only if
1. President deems it proper that such law is necessary for all the States in India
2. Proclamation of Emergency under Article 352 is in operation
3. Lok Sabha passes a resolution by 2/3rd majority of its total membership
4. Governor of the State requests the President for such legislation.

87.
A state legislature passed an Act banning the use of loud speakers within 100 metres of educational institutions and also between 10.00 p.m. and 4.00 a.m. The validity of the legislation is challenged on several grounds. Which one of the following correctly states the law?