The fire broke at the house of Virender, who works as a driver with a private company, fire department officials said.
Virender's wife Vidyavati was cooking when the fire broke out. Besides the two, Virender's mother Juna Devi, two daughters Amrita and Priti and son Raju were injured.
Vidyavati and her two daughters were rushed to a Delhi hospital as their condition was stated to be critical while others were admitted to ESI hospital here, police said.