Hey @Neha, you can write a task like this:
- name: Create a VM with OS and multiple data storage accounts
  azure_rm_virtualmachine:
    resource_group: Testing
    name: testvm001
    vm_size: Standard_DS1_v2
    admin_username: adminUser
    ssh_password_enabled: false
    ssh_public_keys:
    - path: /home/adminUser/.ssh/authorized_keys
      key_data: < insert yor ssh public key here... >
    network_interfaces: testvm001
    storage_container: osdisk
    storage_blob: osdisk.vhd
    image:
      offer: CoreOS
      publisher: CoreOS
      sku: Stable
      version: latest
    data_disks:
    - lun: 0
      disk_size_gb: 64
      storage_container_name: datadisk1
      storage_blob_name: datadisk1.vhd
    - lun: 1
      disk_size_gb: 128
      storage_container_name: datadisk2
      storage_blob_name: datadisk2.vhd