Major Inorganic Chemistry

MnCr₂O₄ is:           

Silica gel contains [CoCl₄]^2– as an indicator when activated, silica gel becomes dark blue while upon absorption of moisture, its color changes to pale pink. This is because:           

The HOMO in CO is:           

What is the geometry of [AuCl₄]^– ion?           

The reagent ‘oxine’ commonly used in analytical chemistry is:
 

Thermal stability of hydrides of first group elements follows the order                                    

On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?           

Mg₂C₃ reacts with water forming propyne, C^4-₃ has:

At pH 7, the zinc(II) ion in carbonic anhydrase reacts with CO₂ to give:

NH₄Cl (s) is heated in test tube. Vapours are brought in contact with red litmus paper, which  changes to blue and then to red. It is because of :

Each of the compounds Pt(NH₃)₆Cl₄, Cr(NH₃)₆Cl₃, Co(NH₃)₄Cl₃ and K₂PtCl₆ were dissolved in water to make its 0.001 M solution. The correct order of their increasing conductivity in solution is:

Hot concentrated HNO₃ converts graphite into :

BH₃.CO in more stable than BF₃.CO because:           

 ⇌

How can this reaction be made to proceed in forward direction?

In cyclophosphazenes, (NPX₂)₃ (X = F, Cl, Br and Me), the strength of p—N p-bond various with X in the order:

Which of the following statemets is true?           

Toxicity of cadmium and mercury in the body in being reversed by proteins, mainly using the amino acid residue:           

For the following reaction

The major product A and B are respectively:

The spin-only (μS) and spin plus orbital (μS+L) magnetic moment of [CrCl₆]^3– are:           

The red colour of ruby is due to:           

The carbide which gives ethyne on hydrolysis:                                   

Choose the correct option for carbonyl fluoride with respect to bond angle and bond length:                                 

Which of the following is false?           

Strength of hydrogen bond is intermediate between:           

Correct order of strength of bonding among:

Polarization is the distortion of the shape of an anion by an adjacently placed cation. Which of the following statement is correct:           

Correct order of P—P bond length in the following compound is:

In which of the following reaction(s) hybridization of asterisk atom does not change?

Of the following molecules, which do not have permanent dipole moment?                            

Select correct statement about N₂O₄.

Which of the following statement (s) is/are correct with respect to alkali metal bicarbonates?                  

Which of the following reagents will be useful in separating a mixture of Zn²⁺ and Cu²⁺ ions?           

Which statement(s) is/are correct about the Prussian blue Fe₄[Fe(CN)₆]₃.

Select the correct statement           

SO₂ act as a/an:           

The inverse spinel among the following mixed metal-oxides is/are:

Which of the following statement(s) is/are correct?           

The number of fully planar molecules among I₃­⁺. I₃^–, H₂O, NH₂^–, I(CN)₂^–, I₂Cl₆

The bond length in O₂ is 121 pm. The number of species having bond length longer than 121 pm:  O₂^–, O₂⁺, H₂O₂, O₂F₂, O₂^2–

Number of microstates for V³⁺ (d²-configuration) is………………..:

The number of possible isomers for disubstituted borazine, B₃N₃H₄X₂ is :

What is the coordination number of beryllium in BeH₂(solid)?

The magnitude of the difference in the crystal field stabilization energies of [Fe(H₂O)₆]²⁺ and [Fe(CN)₆]^4– is xD_o (rounded up to first decimal place, ignoring pairing energy), then x:

The number of P-P bonds in H₃P₃O₉ is:

The total number of lone pairs of electron in I^–₃ is:

The sum of σ & π bonds in C₆N₆O₃ (Benzotrifurazan):

The total number of polygonal faces in C₇₀ is:

X = The number of pseudohalide ions. What is the value of X?
CN^–, OH^–, OCN^–, N₃^–, NCO^–, TeCN^–, SCSN₃^–, NCSe^–, NC^–, NH₂^–, CH₃^–

The coordination number of Be in BeCl₂ crystals is:

Among the following, the number of anhydrides of acids are
CO, NO, N₂O, N₂O₃, N₂O₅, SO₂ and P₄O₁₀

How many among the following set of transition metals ion lie on the straight line of lattice nergy curve of their fluoride? Ca⁺²,  Mn⁺², Zn⁺², Fe⁺³, Ga⁺³

How many of the following molecules have dipole moment: CO₂, NO₂, NO₃^–, XeF₄, O₃, XeF₆, PCl₅,       HCl, PF₃, CN^–, SO₄^2– , ClO₃^–.

Calculate number of M-M bonds in Ir₄(CO)₁₂ :

How many among the following elements are Lanthenides?
Cs, Ra, Sn, Sm, Pb, Er, Se, Gd, Rn, Fr, Hf, Po, At, Tc

The number of Sulfur-Sulfur bond in H₂S₄O₆

The number of pairs which shows correct order of angle:
(I) NH₃ > PH₃                   (II) H₂S < H₂O                  (III) NO₂⁺ > NO₂                   (IV) NO₂⁺ > NO₂^–
(V) NO₂^– > NO₂⁺              (VI) Cl₂O < OF₂               (VII) H₂O > OF₂

Calculate the number of Zr-B bond in Zr(BH4)₄: