Economy can be achieved in doors, windows, ventilator by:

Related Questions

• In ______________ system, the use is made of doors, windows, ventilators and skylights to make the room properly ventilated.
• In a ventilator, top edge of shutter opens,
• In a building, to provide ultimate comfort to occupants ________ can be used.
• During fire, the human body can withstand temperature upto __________
• A _______ building material can be made into new products again and again.
• The ease and certainty with which an eye can seen an object is called____________