title: ngFor to populate options on a drop-down from key value object in Angular 2
body: <p>How use ngFor to populate options on a drop-down from key value object in Angular 2. json is below.</p>
  
  <pre><code>   {
       "employment": {
        "0": "Employed",
        "2": "Un-employed",
        "3": "Retired",
        "4": "Self"
        "V": "V"
     },
      "citizenship": {
        "0": "Citizen",
        "1": "Immigrant",
        "2": "Visa",
      },
      "phone": {
        "HOME": "Home",
        "CELL": "Cell",
        "WORK": "Work"
      }
  </code></pre>
  
  <p>I need to populate options for 3 dropdowns for employment , phone and immigration using ngfor. Angular 2</p>