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Consider the complexes (I) [MnCl6]3–, (II) [FeF6]3– and (III) [CoF6]3–. Then the correct order of their magnetic moment (spin only) is correctly represented in

The percentage of free SO3 in an oleum is 60%. The given sample in terms of %H2SO4 can be labelled as :

Which of the following statements is incorrect for the order of reaction:

the circumference of second orbit of h atom ,if the wavelength of e is 5×10^{-9

The overlapping powers of 2s, 2p, 2sp2, 2sp3 and2sp orbitals are in the order

When dioxygen is adsorbed on a metallic surface, the electron transfer occurs from the metal to the molecule. The true statements regarding this adsorption are:

Hybridization of central atom in NF3 is:

Differentiate thefollowing w.r.t. x:

When electrons of same spin change position across degenerate orbitals, why is there a release of energy?

An organic compound is estimated through Dumas method and was found to evolved 6 moles of CO2, 4 moles of H2O and 1 mole of nitrogen gas. The formula of the compound is

An oxide X2O3 is oxidised to XO4(-) by Cr2O7(2-) in acidic medium. The no of moles of X2O3 oxidised per mole of dichromate ion is 1. 22. 3/43. 3/24. None

calculate solubility of 5%(w/v )of solution having density of 1.2

A rod of length l and mass m rotates about end A in vertical plane as shown . Magnitude of normal reaction at the hinge A is

A parallel beam of light strikes a piece of transparent glass having cross section as shown in the figure below. Correct shape of the emergent wavefront will be :( figures are schematic and not drawn to scale )

Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting photons of wavelengths λ N, λ Arespectively. Then their ratio is closest to

What is the molecular orbital configuration of N2 molecule and N2-ion?

ntIn acid medium , the standard reduction potential of NO converted to N2O is 1.59V . Its standard potential in alkaline medium would be?n

valency of pyrophosphate in Ca2P2O7 i

0.5 g of a nonvolatile organic compound (molecular weight 65) is dissolved in 100 mL of CCl4. If the vapour pressure of pure CCl4 is 140 mm Hg, then calculate the vapour pressure of the solution.(Density of CCl4 solution is 1.6 g mL−1

how many 90 degree bonds are present in XeOF4?

Sulphuric acid has the highest importance in the chemical Industry. Why?Classify following substances into acidic, basic and neutral group - HCl, NaCl, MgO, KCl, CaO, H2SO4 , HNO3 , H2O, Na2CO3.

Which of the following does not represent Williamson's ether synthesis?

how many quantam no. for orbital?

The boiling point of a liquid is 50 K at 1 atm and ΔHvap=460.6 cal/mol. What will be its boiling point at 10 atm pressure ?

An electron (mass m) with initial velocity →v=v0^i+v0^j is in an electric field →E=−E0^k. If λ0 is initial de-Broglie wavelength of electron, its de-Broglie wave length at time t is given by

A sample of ammonium phosphate, (NH4)3PO4 contains 18 moles of hydrogen atoms. The number of moles of oxygen atoms in the sample is

What are bridge elements in periodic table?

Why exchange energy always takes place between the electrons of same spin?

A homogeneous ideal gaseous reaction AB2(g)⇌A(g)+2B(g) is carried out in a 25 L flask at 27oC. The initial amount of AB2 was 1 mol and the equilibrium pressure was 1.9 atm. The value of KP is x×10−2. The value of x is ______. [R=0.08206dm3 atm K−1 mol−1]

What is mole fraction and what will be the it's effect on solubility if I decrease it . ??and why

Write the formulae for the following compounds: (a) Mercury(II) chloride (b) Nickel(II) sulphate (c) Tin(IV) oxide (d) Thallium(I) sulphate (e) Iron(III) sulphate (f) Chromium(III) oxide

Which of these salts will have highest value of ph in water and why Kcl Nacl Na2Co3 Cuso4

Consider the two equations at a particular temperature:2N2O5→4NO2+O2N2O5→2NO2+12O2If E1 and E2 represents the activation energy for the first and second reaction respectively then;

Two moles of an ideal gas is heated at a constant pressure of one atmosphere from 27∘C to 127∘C. If Cv,m = 20 + 10−2 T JK−1 mol−1, then q and ΔU for the process are:

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is [a0 is Bohr radius]

Is Tropolone aromatic?

When a solution of benzoic acid was titrated with NaOH the pH of the solution when half the acid neutralized was 4.2. Dissociation constant of the acid is

Gases deviate from the ideal gas behaviour because their molecules

WHAT IS HAPLOID AND DIPLOID AND WRITE THEIR DIFFERENCES

Why is the basicity of Boric Acid 1,although we have three replaceable hydrogen ions?

mass percentage ofurea in 0.5 molal aqueous solution ofurea is

For sodium acetate solution in water, the given equilibrium reaction occur:CH3COO− (aq)+H2O (l)hydrolysis⇌CH3COOH (aq)+OH− (aq) Which of the following describes the correct relation ?(where h is the degree of hydrolysis of salt)

If the radius of Mg2+ ion, Cs+ ion, O2- ion, S2- ion and Cl- ion are 0.65 Å , 1.69 Å, 1.40 Å, 1.84 Å, and1.81 Å respectively. Then the co-ordination numbers of the cations in thecrystals of MgS, MgO and CsCl respectively are:

In the given compounds, arrow indicate direction of inductive effect. Choose the compound in which direction of inductive effect shown is incorrect.

A long string with linear charge density lamda per unit length passes through an cube of edge a. Maximum flux of electric field through the cube is.

explain flow of bood in heart with diagram

Differentiate thefollowing w.r.t. x:

What is the value of (∆E)in KJ when 0.08mole of liquid water vapourise at 100°C the enthalpy of vap. Aof water at 100°C is 40.66KJ/mol (UseR=8.314J/mol K)