Difference in the melting and boiling points of inert gases is :
large
small
no difference
any of these
Anode in the galvanic cell is :
negative electrode
positive electrons
neutral electrode
none of the above
Normal solution is :
inert solution
acidic solution
one litre containing one equivalent
basic solution
The magnetic moment of K3[Fe(CN)6] is found to be 1.7 BM .How many unpaired electron (s) is/are present per molecule ?
1
2
3
4
NaOCl is used as a bleaching agent and sterilising agent .It can be synthesized by the action of :
NaCl with H2O
NH4Cl with NaOH
Cl2 with cold and dilute NaOH
Cl2 with hot and concentrated NaOH
How can you synthesize nitric oxide in the laboratory ?
Zinc with cold and dilute HNO3
Zinc with concentrated HNO3
Copper with cold and dilute HNO3
Heating NH4NO3
A.
Zinc with cold and dilute HNO3
NO (Nitric oxide) is synthesized in lab by copper with cold and dilute HNO3
3Cu + 3Cu(NO3)2 + + 4H2O
By reacting Zn with cold and dil. HNO3 , NH4NO3 is formed .
Phenol on reaction with Br2 gives :
O - Bromo phenol
p - Bromo phenol
2 , 4 , 6 tribromo phenol
1 , 3 , 5 tribromo benzene