निम्नलिखित स्नाख्यावाचक शब्दों में से कौन सा मानक रूप स्वीकृत नहीं है?
मानक रूप सत्तावन होता है।
The gas usually causing explosions in coal mines is-
The major component of honey is-
The fuel that is used in modern submarines is -
Bronze is an alloy of-
The chemical name of'Common salt’
The acid used in lead storage cells is-
___________ is the process in which acids and bases react to form salts and water.
Urea is a —
The important ore of aluminium is-
The element used in the manufacture of safety matches is —
