The resistivity of a $0.8 M$ solution of an electrolyte is $5 \times 10^{-3} \Omega cm$ Its molar conductivity is ____ $\times 10^4\, \Omega^{-1}\, cm ^2 \,mol ^{-1}$
Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride The volume of hydrogen gas produced at STP from the reaction of $115 \, g$ of zine with excess $HCl$ is ___$L$ (Nearest integer)(Given: Molar mass of $Zn$ is $654 \,g \,mol ^{-1}$ and Molar volume of $H _2$ at $STP =227 \,L$ )
The number of molecules which gives haloform test among the following molecules is
The logarithm of equilibrium constant for the reaction $Pd ^{2+}+4 Cl ^{-} \rightleftharpoons PdCl _4^{2-}$ is (Nearest integer) Given : $\frac{230RT }{ F }=006 V$ $Pd _{\text {(aq) }}^{2+}+2 e ^{-} \rightleftharpoons Pd ( s ) \quad E ^{\ominus}=083 V$ $PdCl _4^{2-} \text { (aq) }+2 e ^{-} \rightleftharpoons Pd ( s )+4 Cl ^{-} \text {(aq) } E ^{\ominus}=065 V$
Consider the cell:\[\text{Pt(s)}|\text{H}_2(g, 1\,\text{atm})|\text{H}^+(aq, 1\,\text{M})||\text{Fe}^{3+}(aq), \text{Fe}^{2+}(aq)||\text{Pt(s)}.\]When the potential of the cell is 0.712 V at 298 K, the ratio \([\text{Fe}^{2+}]/[\text{Fe}^{3+}]\) is ____ (Nearest integer).
The number of alkali metal(s), from Li, K, Cs, $Rb$ having ionization enthalpy greater than $400\, kJ$ $mol ^{-1}$ and forming stable super oxide is
On complete combustion, $0.492\, g$ of an organic compound gave $0.792 \,g$ of $CO _2$ The $\%$ of carbon in the organic compound is(Nearest integer)
A sample of a metal oxide has formula $M _{0.83} O _{1.00}$ The metal $M$ can exist in two oxidation states $+2$ and $+3$ In the sample of $M _{0.83} O _{1.00}$, the percentage of metal ions existing in $+2$ oxidation state is___$ \%$ (nearest integer)
At $298\, K$, the solubility of silver chloride in water is $1434 \times 10^{-3} \,g\, L ^{-1}$. The value of $-\log K _{sp}$ for silver chloride is ____.(Given: Mass of $Ag$ is $1079\, g\, mol ^{-1}$and mass of $Cl$ is $355 \,g \,mol ^{-1}$ )
The rate constant for a first order reaction is $20 \min ^{-1}$ The time required for the initial concentration of the reactant to reduce to its $\frac{1}{32}$ level is ___$\times 10^{-2} \min$ (Nearest integer) (Given: $\ln 10=2.303$ $\log 2=0.3010$ )
If compound A reacts with B following first-order kinetics with rate constant \(2.011 \times 10^{-3} \, \text{s}^{-1}\), the time taken by A (in seconds) to reduce from 7 g to 2 g will be ------- (Nearest Integer).Given: \[\log 5 = 0.698, \, \log 7 = 0.845, \, \log 2 = 0.301.\]
A solution containing 2 g of a non-volatile solute in 20 g of water boils at 373.52 K. The molecular mass of the solute is ------- g mol\(^{-1}\) (Nearest integer).Given: Water boils at 373 K, \(K_b\) for water = 0.52 K kg mol\(^{-1}\).
Amongst the following, the number of species having the linear shape is $XeF _2, I _3^{+}, C _3 O _2, I _3^{-}, CO _2, SO _2, BeCl _2 \text { and } BCl _2^{\ominus}$
Match List -I with List-II
Choose the correct answer from the options given below:
Which one of the following statements is incorrect?
Compound $A , C _5 H _{10} O _5$, given a tetraacetate with $AC _2 O$ and oxidation of $A$ with $Br _2- H _2 O$ gives an acid, $C _5 H _{10} O _6$ Reduction of $A$ with $HI$ gives isopentane The possible structure of $A$ is:
The element playing significant role in neuromuscular function and interneuronal transmission is :
The normal rain water is slightly acidic and its $pH$ value is $56$ because of which one of the following ?
Which of the following compounds would give the following set of qualitative analysis?
