Top 100+ questions in Education

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Q: Why coal or petrol does not burn by itself in air but once initiated by flame, it continues to burn?

Why coal or petrol does not burn by itself in air but once initiated by flame, it continues to burn? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why in general does not proceed with a uniform rate throughout?

Why in general does not proceed with a uniform rate throughout? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why instantaneous rate is preferred over average rate?

Why instantaneous rate is preferred over average rate? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why are reactions of higher order less in number?

Why are reactions of higher order less in number? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Is there any reaction whose rate does not decrease with time ?

Is there any reaction whose rate does not decrease with time ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is the order of reaction whose rate constant has the same units as rate of reaction ?

What is the order of reaction whose rate constant has the same units as rate of reaction ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What type of plot is obtained for rate versus time for zero order reaction gt

What type of plot is obtained for rate versus time for zero order reaction gt Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: When is the rate of reaction equal to specific rate constants ?

When is the rate of reaction equal to specific rate constants ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: When does the average rate become equal to instantaneous rate ?

When does the average rate become equal to instantaneous rate ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: On the basis of enthalpy of formation, graphite is more stable than diamond, yet diamond does not change into graphite for years. Why ?

On the basis of enthalpy of formation, graphite is more stable than diamond, yet diamond does not change into graphite for years. Why ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the reaction is slow. Why?

In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the ... is slow. Why? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Can a reaction have negative or zero activation energy ?

Can a reaction have negative or zero activation energy ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: The reactions `:2CO(g)=O_(2)9g)rarr 2CO_(2)(g)` and `2NO(g)+O_(2)(g) rarr 2NO_(2)(g)` look to be similar. Yet the former is slower than latter at same

The reactions :2CO(g)=O29g)→2CO2(g) and 2NO(g)+O2(g)→2NO2(g) look to be similar. Yet the former is ... at same temperature. Why ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What are the units of a pseudo unimolecular and pseudo bimolecular reaction ?

What are the units of a pseudo unimolecular and pseudo bimolecular reaction ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is the effect of adding catalyst on free energy change `(DeltaG)` of a reaction ?

What is the effect of adding catalyst on free energy change ( Δ G ) ( of a reaction ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why equilibrium constant of a reaction does not change in the presence of a catalyst ?

Why equilibrium constant of a reaction does not change in the presence of a catalyst ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is the value of `K` at high temperature. Is it feasible or not ?

What is the value of K K at high temperature. Is it feasible or not ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why are substance such as platinum and palladium often used for carrying out electrolysis of aqueous solutions?

Why are substance such as platinum and palladium often used for carrying out electrolysis of aqueous solutions? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is the role of desorption in the process of catalysis?

What is the role of desorption in the process of catalysis? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What modification can you suggest in the Hardy Schulze law?

What modification can you suggest in the Hardy Schulze law? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why is it essential to wash the precipitate with water before estimating it quantitatively?

Why is it essential to wash the precipitate with water before estimating it quantitatively? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: Why are powdered substances more effective adsorbent than their crystalline forms ?

Why are powdered substances more effective adsorbent than their crystalline forms ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What are the factors which influence the adsorption of a gas on a solide ?

What are the factors which influence the adsorption of a gas on a solide ? Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is an adsorption isotherm? Describe Freundlich adsorption isotherm.

What is an adsorption isotherm? Describe Freundlich adsorption isotherm. Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What do you understand by activation of adsorption `: ` How is it achieved.

What do you understand by activation of adsorption : : How is it achieved. Select the correct answer from above options...

asked Jan 4, 2022 in Education by JackTerrance

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Q: What is the role of desorption in the process of catalysis?

What is the role of desorption in the process of catalysis? Select the correct answer from above options...

asked Jan 3, 2022 in Education by JackTerrance

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Q: What modification can you suggest in the Hardy Schulze law?

What modification can you suggest in the Hardy Schulze law? Select the correct answer from above options...

asked Jan 3, 2022 in Education by JackTerrance

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Q: Why is it essential to wash the precipitate with water before estimating it quantitatively?

Why is it essential to wash the precipitate with water before estimating it quantitatively? Select the correct answer from above options...

asked Jan 3, 2022 in Education by JackTerrance

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Q: Why are powdered substances more effective adsorbent than their crystalline forms ?

Why are powdered substances more effective adsorbent than their crystalline forms ? Select the correct answer from above options...

asked Jan 3, 2022 in Education by JackTerrance

0 votes

Q: What are the factors which influence the adsorption of a gas on a solide ?

What are the factors which influence the adsorption of a gas on a solide ? Select the correct answer from above options...

asked Jan 3, 2022 in Education by JackTerrance