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Among the following complexes, the one which shows zero crystal field stabilization energy (CFSE) is:

Two elements $X$ and $Y$ (atomic mass of $X=75\text{u}$,$Y=16\text{u}$) combine to give a compound that has 76% of $X$. The formula of the compound is:

Which of the following acts as a buffer solution ?

CsCl crystallises in a body centered cubic lattice. If 'a' is it's edge length then which of the following expressions is correct?

The reaction that takes place at the cathode during the corrosion of iron is:

The ease of dehydrohalogenation of $3^{\circ },2^{\circ }$ and $1^{\circ }$ alkyl halides with alcoholic $KOH$ is:

1 mole of each of $X_1,X_2$ and $X_3$, with van der Waals’ constant ‘$a$’ (in $\left({\text{atm L}}^2{\text{mol}}^{(-2)}\right)$ 1.0, 3.8 and 2.1, respectively are kept separately in three different vessels of equal volume at the same temperature. Their pressures are observed to be $P_1,P_2$, and $P_3$ respectively. On the basis of this data alone, select the correct option (neglect the effect of ‘$b$’):

The volume vs. temperature graph of 1 mole of an ideal gas is given below. The pressure of the gas (in atm) at X,Y and Z, respectively, are

Calgon (a water softener) is

The elements of groups,1, 2, 13, 14, 15, 16 and 17 are collectively called

Of all the three common mineral acids, only sulphuric acid is found to be suitable for making the solution acidic because

In the following compound the no of primary carbon atoms are:

Which of the following is position and chain isomer of

:

Resistance of 0.2 M solution of an electrolyte is 50 $\Omega$. The specific conductance of the solution is $1.4S{m}^{-1}.$ The resistance of 0.5 M solution of the same electrolyte is 280 $\Omega$. The molar conductivity of 0.5 M solution of the electrolyte in $S{m}^{2}mo{l}^{-1}$ is:
(IIT-JEE-2014)

One mole of ideal monoatomic gas is taken along a cyclic process as shown in the figure. Process $1\to 2$ shown is 1/4 th part of a circle as shown by dotted line process. $2\to 3$ is isochoric while $3\to 1$ is isobaric. If efficiency of the cycle is $n\%$ where $n$ is an integer, find n.

The rate law for reaction between the substances A and B is given by Rate = $K\left[A{]}^n\right[B{]}^m$. On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of reaction will be

Nitrogen laser produces a radiation at a wavelength of 337.1 nm. If the number of photons emitted is 5.6 × ${10}^{24}$, calculate the power of this laser.

Which of the following exists as Zwitter ion in aqueous medium

Which statement is true about a spontaneous cell reaction in galvanic cell?

What volume of 95% sulphuric acid (density=1.85g/cm3)and what mass of water must be taken to prepare 100cm3 of 15%solution of sulphuric acid (density=1.10g/cm3)?

Which of the following are ores of copper?

The maximum number of isomers ethers with the molecular formula C${}_4$H${}_{10}$O is

Which gas is liberated when $A{l}_4{C}_3$ is hydrolysed ?

A sweet smelling compounds formed by reacting acetic acid with ethanol in the presence of sulphuric acid is

What is the compressibility factor for $H_2$ which behaves as a real gas?

The order of decreasing ionisation enthalpy in alkali metals is
(a) Na> Li > K> Rb (b) Rb< Na< K< Li
(c) Li > Na> K> Rb (d) K< Li < Na < Rb

Compare the chemistry of actinoids with that of the lanthanoids with special reference to

Electronic configuration

Atomic and ionic sizes

Oxidation state

If methane and helium are allowed to diffuse out of a container under identical conditions of temperature and pressure, the ratio of rate of diffusion of methane to helium is:

Which of the following cells have a cell potential which is the same as its standard value?

The species in which N atom is in a state of sp hybridization is:

Question 04
A beaker contains a solution of substance 'A'. Precipitation of substance 'A' takes place when small amount of 'A' is added to the solution. The solution is ............

Hydrogenation of benzoyl chloride in the presence of Pd supported on $BaS{O}_4$ gives

In which one of the following species the central atom has the type of hybridization which is not the same as that in the other three?

Which of the following is correct graph ?

Calculate the wavelength of the radiation that would cause photo dissociation of oxygen molecule if the $O=O$ bond energy is $498\text{kJ/mol}$ .
(take Avogadro's number to be $6\times {10}^{23}$, and Planck's constant (h) = $6.6\times {10}^{-34}\text{J s}$)

A gaseous organic compound has a density of $2.5kg/m^3$ at 2 atm and at ${273}^{\circ }C$. The molecular formula of the compound can be: