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Why nitrogen cannot form penta halides?
Define ionic product of water. What is its value?
Which process is used in welding the gaps in railway tracks?
Why fe3+ ion is more stable than fe2+ ion is?
Garnet is the ore of which element?
How can you determine the reaction, taking place at constant pressure delta (h)?
Which is element exhibit allotrope in the 6tha group?
How do you call fifth, ‘a’ group elements collectively?
Which oxo acids of sulphur contain s-s bonds?
What is the molecular formula of phosphorous?
The expression q=delta (e)-w is? What does it states?
Why the transition metal ions or compounds exhibit color?
Which equation gives the relation between specific rate (k) and temperature?
What is the ratio of slaked lime and sand in mortar?
Which is the most reactive element in nitrogen family?
