SELECT "Reserved for ( SC / ST /None)" FROM table_63434 WHERE "Name" = 'lahar'
What is the Reserved For of Lahar?
CREATE TABLE table_63434 (
    "Constituency number" text,
    "Name" text,
    "Reserved for ( SC / ST /None)" text,
    "District" text,
    "Number of electorates (2009)" real
)