–JS
var myObj = {
name: 'Pradeep',
age: 28,
state: 'delhi',
address: [{room:'1bhk', type:'semi'}],
address2: [{room:'2bhk', type:'none'}],
address3: [{room:'3bhk', type:'full'}],
}
for(var i=0; i<Object.keys(myObj).length; i++){
for(var x=0; x<myObj[Object.keys(myObj)[i]].length; x++){
if(myObj[Object.keys(myObj)[i]][x].room == '1bhk'){
console.log(myObj[Object.keys(myObj)[i]][x])
}
}
}