Top 100+ questions in Education

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Q: What is electrochemical equivalent of a substance ?

What is electrochemical equivalent of a substance ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: An aqueous solution of `CuSO_(4)` is electrolyszed using `Pt` electrodes in one case and `Cu` electrodes in another case. What are the products of ele

An aqueous solution of CuSO4 is electrolyszed using Pt electrodes in one case and Cu electrodes in another case. What ... the cases ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What are the products of the electrolysis of aqueous solution of `KF` ?

What are the products of the electrolysis of aqueous solution of KF ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Silver is conducting as such while `AgNO_(3)` is conducting in molten state or in aqueous solution. Explain ?

Silver is conducting as such while AgNO3 is conducting in molten state or in aqueous solution. Explain ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why `Zn` reacts with dilute `H_(2)SO_(4)` to give `H_(2)` gas but `Cu` does not ?

Why Zn reacts with dilute H2SO4 to give H2 gas but Cu does not ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is overvolatage or bublle voltage ?

What is overvolatage or bublle voltage ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Which allotrope of carbon is used for making electrodes?

Which allotrope of carbon is used for making electrodes? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Which electrolyte is used in dry cell ?

Which electrolyte is used in dry cell ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What would happen if the protective tin coating over an iron bucket is broken in some places ?

What would happen if the protective tin coating over an iron bucket is broken in some places ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Which metals can be used in the cathodic protection of `Fe` against rusting.

Which metals can be used in the cathodic protection of Fe against rusting. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Name the electrodes used in a fuel cell.

Name the electrodes used in a fuel cell. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Name the electrolyte used in fuel cell and mercury cell.

Name the electrolyte used in fuel cell and mercury cell. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Rusting of `Fe` is quicker in saline water than in ordinary water. Why ?

Rusting of Fe is quicker in saline water than in ordinary water. Why ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why `Cr` is used for coating `Fe` ?

Why Cr is used for coating Fe ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is the role of `ZnCl_(2)` in dry cell ?

What is the role of ZnCl2 in dry cell ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why a mercury cell gives a constant voltage throughout its life ?

Why a mercury cell gives a constant voltage throughout its life ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Which types of cells are rechargeable ?

Which types of cells are rechargeable ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why a dry cell becomes dead after a long time even if it is not used ?

Why a dry cell becomes dead after a long time even if it is not used ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why lead storage can be recharged ?

Why lead storage can be recharged ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Out of `Sn` and `Zn` which one protects `Fe` better even after cracks ?

Out of Sn and Zn which one protects Fe better even after cracks ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why ac is used in place of dc in measuring the conductance of electrolytes ?

Why ac is used in place of dc in measuring the conductance of electrolytes ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Out of `HBr` and `NaBr`, which will have greater value for `wedge_(m)^(@)` and why ?

Out of HBr and NaBr , which will have greater value for ∧ ∘ m and why ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is the relation between molar conductivity `(wedge_(m))` and equivalent conductivity `(wedge_(eq))` of potash alum `[K_(2)SO_(4).Al_(2)(SO_(4))_(

What is the relation between molar conductivity (∧m) and equivalent conductivity (∧eq) of potash alum [K2SO4.Al2(SO4)3.24H2O ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why in a concentrated solution, a strong electrolyte shows deviation from Debye `-` Huckel Onsager equation ?

Why in a concentrated solution, a strong electrolyte shows deviation from Debye − - Huckel Onsager equation ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Which equation gives the relationship between equivalent or molar conductance and concentration of a strong electrolyte ?

Which equation gives the relationship between equivalent or molar conductance and concentration of a strong electrolyte ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is effect of increasing concentration on the molar conductivity of a weak electrolyte ?

What is effect of increasing concentration on the molar conductivity of a weak electrolyte ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why `wedge_(m)^(@)` for weak electrolyte `(e.g., NH_(4)OH` or `CH_(3)COOH)` cannot be determined experimentally ?

Why ∧ ∘ m for weak electrolyte (e.g.,NH4OH or CH3COOH) cannot be determined experimentally ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: An aqueous solution of `K_(2)SO_(4)` is diluted by adding water. How the values of `G, k, wedge_(m)` and `wedge_(eq)` vary ?

An aqueous solution of K2SO4 is diluted by adding water. How the values of G,k,∧m and ∧eq vary ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: The concentration of a reactant changes form `0.03 M` to `0.02 M` in `25 min`. Calculate the average rate of reaction uisng of time both in minutes an

The concentration of a reactant changes form 0.03M to 0.02M in 25min. Calculate the average rate of reaction ... minutes and seconds. Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: In a reaction, `2Ararr` Products the concentration of A decreases from `0.5` "mol" litre^(-1)` to `0.4` "mol" litre^(-1)` in `10` minutes. Calculate r

In a reaction, 2A→ Products the concentration of A decreases from 0.5 "mol" litre^(-1)→ 0.4mollitre-1 ... rate during this interval. Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance