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A solution contains $\left[I^{-}\right]=\left[B{r}^{-}\right]=0.2M$ each.

Then find the percentage of $\left[I^{-}\right]$ that has reacted when the $AgBr$ first precipitates:

Given :

$Salt{K}_{sp}(mol{L}^{-1}{)}^2$

$AgBr5\times {10}^{-13}$

$AgI8.3\times {10}^{-17}$

Which one of the following must strictly change in an adiabatic process?

2.5 mL of $\frac{2}{5}M$ weak monoacidic base ($K_b=1\times {10}^{-12}$) at ${25}^{o}C$ is titrated with $\frac{2}{15}M$ HCl in water at ${25}^{o}C.$ The concentration of $H^{+}$ at equivalence point is $(K_w=1\times {10}^{-14}at{25}^{o}C)$

In the manufacture of sodium carbonate, the following reactions are involved:

$\text{(A)}\stackrel{\Delta }{\to }\text{(B)}+{\text{CO}}_2$

$\text{(B)}+{\text{H}}_2\text{O}\to \text{(C)}\stackrel{N{H}_{4}Cl}{\to }\text{(D)}$

$\text{(E)}+{\text{CO}}_2\to \text{(F)}$

$\text{(F)}+\text{NaCl}\to \text{G}\stackrel{Heat}{\to }{\text{Na}}_2{\text{CO}}_3+{\text{CO}}_2+{\text{H}}_2\text{O}$

${\text{(D) is a gas which is soluble in H}}_2\text{O}$



Compound (B) is:

Entropy change when 4 moles of an ideal gas expands reversibly from an initial volume of 1 $d{m}^3$ to a final volume of 10 $d{m}^3$ at a constant temperature of 298 K is

The observed osmotic pressure of a solution of benzoic acid in benzene is less than its expected value because

The ratio of number of $\sigma$ and $\pi$ bonds in benzene is:

Which of the following molecules does not possess a permanent dipole moment?

Which of the following is TRUE for alkanes?

Reduction of aldehydes or ketones into hydrocarbons using hydrazine and sodium ethoxide is called:

Which of the following are ring chain isomers of $C_4{H}_8$?

Find the equivalent weight of $KMn{O}_4$ in the given reaction, if the molar mass of $Mn{O}_4^{-}$ ion is 'M' ?

$\underset{}{Mn{O}_4^{-}}\to M{n}^{4+}$ (neutral medium)

Which of the following orders is true regarding the basic nature of NH₂ group?

Which of the following
electrolytes is most effective in the coagulation of gold solution [KCET 1996]

The compound(s) which generate(s) $N_2$ gas upon thermal decomposition below ${300}^{o}C$ is (are):

For the reaction H${}_2$ (g) + I${}_2$(g)$\rightleftharpoons$2HI(g),K${}^o$${}_c$= 66.9 at 350${}^{\circ }$C and K${}^o$${}_c$= 50.0 at 448 ${}^{\circ }$C. The reaction has

The salt that forms neutral solution in water is

Which one is the most acidic compound?

Which of the following is not a buffer solution?

Consider the following reactions & identify C:

$Cr{O}_3$ dissoloves in aqueous NaOH to give :

Which is the correct combination of products collected over anode and cathode respectively in order to prepare hydrogen by electrolysis of water?

Due to
Frenkel defect, the density of ionic solids

[MP PET 1996; MP PMT 2002]

In an adiabatic process

If you are provided with $2.5M$ NaOH solution having density $1.5g/mL$, then find the molality of solution.

At STP air contains 22.4% by volume of oxygen. The number of moles of oxygen present in 1 litre of air are

The defect when an ion leaves its lattice point and occupies an interstitial position in the crystal lattice is called ------------------

When light of wavelength ${}^{\prime }{\lambda }^{\prime }$ falls on the surface of a metal with threshold wavelength ${}^{\prime }{\lambda }_0^{\prime }$, an electron of mass 'm' is emitted. The de Broglie wavelength of emitted electron is:

Statement I: Neutron to proton ratio less than 1 especially in a heavy nucleus makes it highly unstable.

Statement II: Nucleus where protons are separated by a large distance are dominated by repulsive electrostatic force.

A metal oxide contains 60 % of metal by mass. The equivalent weight of the metal is:

Calculate the equilibrium concentration of $B^{+}$ ions in a solution obtained by mixing equal volume of 0.02 M $AOH$ and 0.2 M $BOH$ solution.



Given that,

$K_b\left(AOH\right)=1\times {10}^{-8}$

$K_b\left(BOH\right)=2\times {10}^{-9}$

One mole of a non - ideal gas undergoes a change of state (2.0 atm, 3.0 L, 95K) $\to$ (4.0 atm, 5.0L, 245 K) with a change in internal energy $\Delta U=30.0L$ atm. The change in enthalpy of the process in L atm is ?

Which of the following is not correct?



$OrderofbasicityOrderofnucleophilicity\left(a\right)F^{-}>C{l}^{-}>B{r}^{-}B{r}_{-}>C{l}^{-}>F^{-}\left(b\right)H-O-O^{-}>O{H}^{-}H-O-O^{-}>O{H}^{-}\left(c\right)C{H}_3>N{H}_2^{-}>OH-C{H}_3>N{H}_2^{-}>O{H}^{-}\left(d\right)H_{2}O>H_{2}S{H}_{2}O<H_{2}S$

If the solubility of sparingly soluble salt $PbC{l}_2$ is $4.41{\text{g L}}^{-1}$ at $25{}^o\text{C}$. Find its solubility product at the given temperature.

(Take molecular mass of $PbC{l}_2\approx 278{\text{g mol}}^{-1}$)

A collapsible balloon is inflated to a volume of 10 L at a pressure of 1 atm. When the balloon is immersed to the bottom of a lake, its volume reduces to 1.25 L. Assuming 1 atm pressure to be equivalent to 10 m column of water and no change in temperature, the depth of the lake will be

What would be the product of the given reaction?

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling's solution. It however, reacts with grignard reagent and gives positive iodoform test. The compound is:

The number of moles of $F{e}_2{O}_3$ formed when $0.5moles$ of $O_2$ and $0.5moles$ of $Fe$ are allowed to react are

Addition of excess aqueous ammonia to a pink coloured aqueous solution of $MC{l}_2.H_{2}O\left(x\right)andN{H}_{4}Cl$ gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y.

Among the following options, which statemet(s) is (are) correct?

Borax is converted into crystalline boron by the following steps.



$Borax\stackrel{x}{⟶}{H}_{3}B{O}_3\stackrel{Heat}{⟶}{B}_2{O}_3\stackrel{y}{\underset{Heat}{⟶}}B$

X & Y are respectively

A solution of 1.25g of non - electrolyte in 20g of water freezes at 271.94 K. If K_f = 1.86 K kg mol^-1,then the molecular weight of the solute will be:

Consider the following reactions in which all the reactants and products are in gaseous state.

$2PQ\leftrightharpoons P_2+Q_2;K_1=2.5\times {10}^5$

$PQ+\frac{1}{2}{R}_2\leftrightharpoons PQR,K_2=5\times {10}^{-3}$



The value of K₃ for the equilibrium

$1/2P_2+1/2Q_2+1/2R_2\leftrightharpoons PQR$

Given the reaction between $2$ gases represented by $A_2$ and $B_2$ to give the compound $AB\left(g\right)$.

$A_2\left(g\right)+B_2\left(g\right)\rightleftharpoons 2AB\left(g\right)$

At equilibrium, the concentration of:

$A_2=3.0\times {10}^{-3}\text{M}$

$B_2=4.2\times {10}^{-3}\text{M}$

$AB=2.8\times {10}^{-3}\text{M}$

If the reaction takes place in a sealed vessel at $527{}^{\circ }\text{C}$, then the value of $K_c$ will be:

A $50mL$ solution of $0.2MC{H}_{3}COOH$ is titrated with $0.2MNaOH$. Find the $pH$ of solution when:

(a) $0mLNaOH$ is added ($p{H}_{initial}$)

(b) $10mL$ of $NaOH$ has been added ($p{H}_{10mL}$)



Given: $K_a\left(C{H}_{3}COOH\right)=1.8\times {10}^{-5}$

The uncertainty in the position of a ball weighing 50 g is $\pm {10}^{-4}mm$. Calculate the minimum uncertainty in its velocity in m/s