-
Bond angle is minimum for: (a)H2O (b)H2S (c)H2Se (d)H2Te ...
-
Specify the coordination geometry around and hybridisation of N and B atoms in a 1:1 complex of BF3 and NH3 (a)N:tetrahedral,sp3;B:tetrahedral,sp3 (b)N:pyramindal,sp3;B:pyramindal,sp3 (c)N:pyramindal,sp3;B:planar,sp2 (d)N:pyr ...
-
Amongst the C-X bond ,the correct bond energy order is - (a)C-Cl>C-Br>C-I (b)C-I>C-Cl>C-Br (c)C-Br>C-Cl>C-I (d)C-I>C-Br>C-Cl ...
-
Q1 Identify the least stable ion amongst the following-(a)Li-(b)Be-(c)B-(D)C- ...
-
which is more strong?? covalent bond or electrovalent bond Give reasons also. ...
-
aa dekhe jara kisme kitna hai inorganic dum .... *Image* To make things easier here are the options ... (a) q,r q,s s,p r,p (b) s r q p (c) q r p s (d) r p q s ...
-
CHOOSE THE CORECT STATEMENT(S) A)The red blood colour obtained by adding KCNS to a ferric salt fades out when NAF is gradually added to it B) When NaOH is added to a cupric salt solution, pale bluish geen Cu(OH)2 is precipita ...
-
Zn salt is mixed with (NH4)2S of molarity 0.021 M.The amount of Zn2+ remains unprecipitated in 12mL of. this solution is --(Given KSP of ZnS=4.51 x 10-24) A. 1.687 x 10-22 g B. 1.767 x 10-20 g C. 2.01 x 10-23 g D. none of the ...
-
It is found that 0.1 M solution of three Na salts NaX,NaY,NaZ have pHs 7.0,9 and 11 respectively. Which of the following statement is/are correct ? A. The solution which has pH 7,the conjugate and HX of X- ,must be strong. B. ...
-
If pKb for fluoride ion at 25oC is 10.83,the ionisation constant of hydrofluoric acid in water at this temperature would be A. 1.74 X 10-5 B. 3.52 X 10-3 C. 6.75 X 10-4 D. 5.38 X 10-2 ...
-
what is chromatic aberration??????? ...
-
Q.2The percentage of p-character in the orbitals forming P--P bonds in P4 is------ (a)25 (b)33( c)50 (d)75 % ...
-
someone please put forward with views on how to study inorganic chemistry in the minimum possible time !!!! ...
-
what is the colour of *Image* ...
-
Ques) Calculate the lattice energy of aslat MX(s) from the data given below:- Heat of formation of MX ( \Delta H) = -550 kj/mol Heat of sublimation of M(s) = 80 kj/mol Heat of dissociation of X2 (D) = 155 kj/mol Ionisation En ...
-
what is zone refining?????? ...
-
in chemical bonding i cant get what is co-ordinate bond ...
-
Q) (A)( yellow coloured solution ) changes to light green coloured solution (B), on passing H2S gas. (A) and(B) both give white precipitate with BaCl2 solution, insoluble in conc. HCl . (A) gives blue coloured precipitate (C) ...
-
If atomic H2 is kept in O2 at 20 C,we get A.H2O B.H2O2 C.atomic hydrogen and water D.both A and B. ...
-
Which of the following rxn. is possible ?? Give reasons-- a.H3PO4 decolorising KMnO4 b.H4As2O7 decolorising Br water. ...
-
Which of the following is the most exothermic reaction when dissolved in water ?? A. LiI B.CsF C. LiF D. CsI ...
-
With which halogen can hydrogen react in the dark ?? ...
-
HOW TO LEARN PERIODIC TABLE IN AN EASY WAY ...
-
why is H2O neutral but HF acidic in nature ?(i mean you analyse the huge difference in properties !!!) ...
-
what is schorindger wave equation ...
-
why cl has more electron affinity than than fluorine???????????? ...
-
Q1. In an octahedral structure, the pair of d-orbitals involved in d2sp3 hybridisation is (a) dx2-y2,dz2 (b) dxz,dx2-y2 (c) dz2,dxz (d)dxy,dyz Q2. The d-orbital involved in sp3d hybridisation is (a) dx2-y2 (b) dxy (c) dz2 (d) ...
-
how magnetic and electric field can affect the rate of reaction ...
-
Boron or Fluorine - neither has vacant d-orbitals, so how can boron tri-fluoride act as a lewis acid? ...
-
why NO is paramagnetic in gaseous state but diamagnetic in solid and liquid state ...