1Q)1 c
fe+c=steel
Q)3-b
single choice correct
Q1 WHich pair can form alloy ?
a)Zn,Pb
b)Fe,Hg
c)Fe,C
d)C,Pt
Q2 consider [Ag(NH3)2]+,[Ag(CN)2]-,[Ag(S2O3)2]3-
Which of the following are true abt these ??
a)Ag+ acts as lewis base
b)hybd of Ag+ is sp2
c)the all are gud reducing agent
d)all are linear
QHardness of transiiton metals is due to ?
a)large atomic size
b)metallic bonding
c)covalent bond
d)high ionization energy
Q4The oxidn state in metal carbonuyl is generally _____
Q5 the no. of ions formed on dissolving FeSO4(NH4)2SO4.6H2O is ??
Q6 te only cations present in slightly acidic soln are Fe3+,Zn2+,Cu2+.Find reagent which when added to soln will separate them Fe3+ in one step
Q7 which of the following are paramagnetic and colored
a)K2Cr2O7
b)(NH4)2[TiCl]6
c)VOSO4
d)K3[Cu(CN)4]
more than one correct
Q8which of folowing are ionic
a)ZnCl2
b)LiCl
c)HgCl2
d)AgCl
Q9 K4[Fe(CN)6] is used in identification of
a)Fe2+
b)Fe3+
c)Cu2+
d)Cd2+
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43 Answers
1proof for licl to be ionic
http://en.wikipedia.org/wiki/Lithium_chloride
proof for hgcl2 to be ionic
http://answers.yahoo.com/question/index?qid=20090105173415AAB6phS
106Q1. (c) Steel is formed
Q3. (b) sure
Q4.The oxidn state in metal carbonuyl is generally 0 .. consdier[Ni(CO)4] here osdn no. of Ni = 0