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Which of the following compounds have the same geometry among the following :

(i) $C_2{H}_4$

(ii) $AlC{l}_3$

(iii) $C{H}_4$

(iv) $N{F}_3$

The strongest acid among the following aromatic compounds is [NCERT 1978]

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An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:

SCHEME:



M1, Q and R, respectively are

One mole of a liquid ($1bar,100ml$) is taken in an adiabatic container and the pressure increases steeply to $100bar$. Then at constant pressure of $100bar$, volume decrases by $1mL$. Calculate $\Delta H$.

Halides of alkaline earth metals form hydrates such as MgCl₂.6H₂O,CaCl₂.6H₂O, BaCl₂.2H₂O and SrCl₂.2H₂O. This shows that halides of group 2 elements

A first order reaction has a specific reaction rate of 10^-2 s^-1. How much time will it take for 20 g of the reactant to reduce to 5 g?

Aqueous solution of $N{a}_2{S}_2{O}_3$ on reaction with $C{l}_2$ gives

A cyclic process ABCD is shown in the P-V diagram for an ideal gas. Which of the following diagrams represents the same process?

A tripeptide is composed equally of L - valine, L - tyrosine and L - alanine (one molecule each).The number of isomeric tripeptides of this kind may exist is

The Dow's process is used for the preparation of

In which of the following processes, the bond order has increased and the magnetic behaviour has changed?

Sugar dissolves in water due to the formation of

Example of intrinsic
colloid is

The coordination number of
a metal crystallising in a simple cubic structure is

The compressibility factor for $H_2$ which behaves as a real gas is

Which of the following hydracids is the strongest acid?

Alum is used to purify water since it acts as

A solid $‘A{B}^{\prime }$ has the $NaCl$ structure, and $‘A^{\prime }$ atoms occupy the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant formula of the of the unit cell of the solid will be:

What can be concluded about the values of $△H$ and $△S$ from this graph?

In a saturated solution, there exists an equilibrium between:

For the following reaction,

$C(diamond,s)+O_2\left(g\right)\to C{O}_2\left(g\right);△H=-94.3kcal$

$C(graphite,s)+O_2\left(g\right)\to C{O}_2\left(g\right);△H=-97.6kcal$

The heat required to change 1 g of $C(diamond,s)\to C(graphite,s)$ is:

Which of the following chemical reactions depicts the oxidising behaviour of $H_{2}S{O}_4$?

Reduction involves :

On aqueous electrolysis, which one of the following does not evolve hydrogen at the anode?

Calculate the minimum and maximum number of electrons which may have magnetic quantum number, $m=+1$ and spin quantum number, $s=-\frac{1}{2}$ in chromium $\left(Cr\right)$

Which of the following group will show $+R$ effect?

Ionic radii of which ions is same

In which of the following resonance will be possible?

One mole of soda ash dissolves in water with evolution of 25 kJ of heat. Dissociation of 1 mol of the hydrate crystals in water resulted in the absorption of 67 kJ of heat. The heat released due to hydration of soda ash is

Standard Reduction potential of four imaginary elements are given below:

$W=-1.80V,X=0.35V,Y=0.25V,Z=-0.43V$

Arrange the following in increasing order of their oxidising power.

If $N_1,N_2,N_3,......$ are the number of molecules with molecular masses $M_1,M_2,M_3,......$ respectively, the mass average molecular mass is expressed as?

The molecule having T-shape is:

What is the compound (Z) in the following sequence of reaction

What is the correct increasing order of a gas being liquifiable?

In which of the following compounds tautomerism is possible?

An ester used as medicine is:

Compressibility factor $\left(Z\right)$ is plotted against pressure $\left(P\right)$ for four different gases $A,B,C$ & $D$. The correct order of critical temperature of the gases shown in the below graph is

In a given energy level, the order of penetration effect of different orbitals is:

Ammonium carbonate decomposes as

$N{H}_{2}COON{H}_4\left(s\right)\leftrightharpoons 2N{H}_3\left(g\right)+C{O}_2\left(g\right)$ For the reaction, $K_P=2.9\times {10}^{-5}at{m}^3$. Calculate the total pressure at equilibrium if $1moleofN{H}_{2}COON{H}_4$is taken.

$200c.c.$ of a gas measured at S.T.P. has a mass of $0.268g$. Molecular weight of the gas is:

In which one of the following reactants, $K_p$ is less than $K_c$?

The correct increasing order of stability of the free radicals among the following is: