1Its true. Li+ ion is small, so it is highly hydrated. Thus its hydrated ion size is largest. You can refer to JD Lee.
(%) Optical glass has high percentage of
(A) MgO
(B) B2O3
(C) PbO
(D) Al2O3
Ans PbO
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26 Answers
1
1Q)^....at X--->Y + Z
a b c
a-x b+x c+x...................now put the givn values and get a+b=6....and get
a=6
4@smsm : Ans given is pz (which i think is wrong)
Even I'm not sure of the correct ans
1Sum of the series 1/(4.5.6)+1/(5.6.7)+1/(6.7.8)+...upto ∞ is
logee/20
logee/10
logee/40
none of these
1the hydration of lithium is the most as the hydrating power is inversely proportional to the size of the ion. so after hydration hydration radius of lithium is the most. so the answer is TRUE.
4(^) Concentrations of X , Y , Z r 4 , 2 , 2.8 mol/l respectively. Then iinitial concentration of X is
X < ------ > Y + Z
(A) 6
(B) 8
(C) 10
(D) 4
4Ans for (*) qs is given is Faraday but that can not be true as moth r dimensionally diff units
So I too go with D
However any one has views against D can cum up
4but in that hydrated ions qs ions r given
in op agarwal as u said elements r given
1RADIOACTIVE ONE.....i think its either c or d...
it cant b (a)......1 curie=3.7 x 1010 dps---so it cant b (b)
as far as i remember, 1 becquerel = 1 dps....but not gvn in d ans..so m8 b D
4(!) Which one has no nodal plane in XY plane
(A) px
(B) py
(C) pz
(D) dxy
Ans given C I think A or B
4(*) A radioactive element undergoes 1 dps then it is called
(A) 1 Faraday
(B) 1 Curie
(C) 1 Rutherford
(D) None
Ans given A but I go with D
4(&) Radius of hydrated ion is in the order of
(A) Li+ > Na + > K + > Rb+ > Cs +
T/F
Ans TRUE