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Assertion : In a titration of weak acid with strong base, the pH at the half equivalence point is pKa Reason : At half equivalence point, it will form acidic buffer at it’s maximum capacity where [acid] = [salt]
18
Nov
Assertion : In a titration of weak acid with strong base, the pH at the half equivalence point is pKa Reason : At half equivalence point, it will form acidic buffer at it’s maximum capacity where [acid] = [salt] Assertion : In a titration of weak acid with strong base it will form acidic buffer [...]
The relation between R and r ( internal resistance of the battery ) for which the power consumed in the external part of the circuit is maximum.
18
Nov
The relation between R and r ( internal resistance of the battery ) for which the power consumed in the external part of the circuit is maximum. The relation between R and r ( internal resistance of the battery ) for which the power consumed in the external part of the circuit is maximum. November [...]
A charge passing through a resistor varies with time as shown in the figure. The anmount of heat generated in time t is best represented ( as a function of time ) by
18
Nov
A charge passing through a resistor varies with time as shown in the figure. The anmount of heat generated in time t is best represented ( as a function of time ) by A charge passing through a resistor varies with time as shown in the figure. The anmount of heat generated in time t [...]
Carbogen is a mixture of (a) CO2 + N2 (b) CO + O2 (c) CO2 + O2 (d) C + H2 + N2
18
Nov
Carbogen is a mixture of (a) CO2 + N2 (b) CO + O2 (c) CO2 + O2 (d) C + H2 + N2 Carbogen is a mixture of (a) CO2 + N2 (b) CO + O2 (c) CO2 + O2 (d) C + H2 + N2 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
Statement-1: pH value of acidic buffer solution changes , If buffer solution is diluted up to very large extent. Statement-2: [H+] decreases due to change in concentration as well as α increases and decreases in concentration is more as compared to increases in α .
18
Nov
Statement-1: pH value of acidic buffer solution changes , If buffer solution is diluted up to very large extent. Statement-2: [H+] decreases due to change in concentration as well as α increases and decreases in concentration is more as compared to increases in α . Statement-1: pH value of acidic buffer solution changes To what [...]
H2O2 on reaction with PbS gives (a) PbO (b) PbSO4 (c) PbO2 (d) PbHSO4
18
Nov
H2O2 on reaction with PbS gives (a) PbO (b) PbSO4 (c) PbO2 (d) PbHSO4 H2O2 on reaction with PbS gives (a) PbO (b) PbSO4 (c) PbO2 (d) PbHSO4 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In figure, the optical fiber is l = 2 m long and has a diameter of d=20μm. If a ray of light is incident on one end of the fiber at angle θ1=40^∘ , the number of reflections it makes before emerging form the other end is close to : (refractive index of fiber is 1.31 and sin40^∘=0.64)
18
Nov
In figure, the optical fiber is l = 2 m long and has a diameter of d=20μm. If a ray of light is incident on one end of the fiber at angle θ1=40^∘ , the number of reflections it makes before emerging form the other end is close to : (refractive index of fiber is [...]
Formation of in numberable compounds of carbon is due to its (a) High reactivity (b) Catenation tendency (c) Covalent and ionic tendency (d) Different valency
18
Nov
Formation of in numberable compounds of carbon is due to its (a) High reactivity (b) Catenation tendency (c) Covalent and ionic tendency (d) Different valency Formation of in numberable compounds of carbon is due to its (a) High reactivity (b) Catenation tendency (c) Covalent and ionic tendency (d) Different valency November 18, 2020 Category: Uncategorised [...]
What is the concentration of CH3COOH(aq.) in a solution prepared by dissolving 0.01 mole of NH+4CH3COO− in 1 L H2O? [Ka(CH3COOH)=1.8×10^−5),Kb(NH4OH)=1.8×10^−5]
18
Nov
What is the concentration of CH3COOH(aq.) in a solution prepared by dissolving 0.01 mole of NH+4CH3COO− in 1 L H2O? [Ka(CH3COOH)=1.8×10^−5),Kb(NH4OH)=1.8×10^−5] Kb(NH4OH)=1.8×10^−5] What is the concentration of CH3COOH(aq.) in a solution prepared by dissolving 0.01 mole of NH+4CH3COO− in 1 L H2O? [Ka(CH3COOH)=1.8×10^−5) November 18, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 and [...]
Lead nitrate on heating gives lead oxide, nitrogen dioxide and oxygen. This reaction is known as (a) Combustion (b) Combination (c) Displacement (d) Decomposition
18
Nov
Lead nitrate on heating gives lead oxide, nitrogen dioxide and oxygen. This reaction is known as (a) Combustion (b) Combination (c) Displacement (d) Decomposition Lead nitrate on heating gives lead oxide nitrogen dioxide and oxygen. This reaction is known as (a) Combustion (b) Combination (c) Displacement (d) Decomposition November 18, 2020 Category: Uncategorised (JEE Advanced [...]