Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@) C`. For this process, the correct statement is

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@) C`. For this process, the correct statement is
by

1 Answer

Answer :

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at `25^(@) C` ... of temperature. D. The adsorption is irreversible.
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Out of CO and NH3 which is adsorbed on activated charcoal to a large extent and why ?

Description : Out of CO and NH3 which is adsorbed on activated charcoal to a large extent and why ?

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An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

Description : An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

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Why are stains such as methylene blue and iodine solution used when observeing cells under the microscope?

Description : Why are stains such as methylene blue and iodine solution used when observeing cells under the microscope?

Last Answer : What is the answer ?

Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? (1) Methylene blue (2) Methyl red (3) Phenolphthaline (4) Methyl orange

Description : Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ? (1) Methylene blue (2) Methyl red (3) Phenolphthaline (4) Methyl orange

Last Answer : Methyl orange

Which will be adsorbed more readily on the surface of charcoal and why NH3 or CO2?

Description : Which will be adsorbed more readily on the surface of charcoal and why NH3 or CO2?

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3 gram of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the fitr

Description : 3 gram of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the fitr

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Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.

Description : Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.

Last Answer : Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.

Methylene blue test?

Description : Methylene blue test?

Last Answer : DefinitionThe methylene blue test is used to determine the type of the blood disorder, methemoglobinemia.How the test is performedThe health care provider wraps a tourniquet or blood pressure cuff around your ... tube into your vein. The health care provider looks at how the powder turns a subst

Methylene blue staining of metachromatic granules is diagnostic for which of the following bacteria? a. Mycobacterium Tuberculosis b. Coiynebacterium Diphtheriae c. Chlamydia Pneumoniae d. Bordetella Pertussis

Description : Methylene blue staining of metachromatic granules is diagnostic for which of the following bacteria? a. Mycobacterium Tuberculosis b. Coiynebacterium Diphtheriae c. Chlamydia Pneumoniae d. Bordetella Pertussis

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Activated charcoal is employed to remove colouring matter from pure substance, it work? -Do You Know?

Description : Activated charcoal is employed to remove colouring matter from pure substance, it work? -Do You Know?

Last Answer : answer:

Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Description : Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Last Answer : (3) Adsorption Explanation: Heating wood to a very high temperature in the absence of air makes charcoal. When it is heated to an even higher temperature, about 930°C, impurities are driven from its ... . It does so by the process of adsorption, or by attracting these molecules to the surface.

Which of the following acts as best adsorbent? (1) Charcoal (2) Activated Charcoal (3) Activated Coconut Charcoal (4) Carbon black

Description : Which of the following acts as best adsorbent? (1) Charcoal (2) Activated Charcoal (3) Activated Coconut Charcoal (4) Carbon black

Last Answer : (3) Activated Coconut Charcoal Explanation: Activated coconut charcoal is a highly absorbent material with millions of tiny pores that can capture, bind, and remove unwanted materials. The porous surface has a ... out of the body. It is used medicinally as well as in air and water purifiers.

Activated charcoal is employed to remove colouring matter from pure substance, it work?

Description : Activated charcoal is employed to remove colouring matter from pure substance, it work?

Last Answer : Adsorption

Which of the following adsorbent is used in the refining of sugar? (A) Bone charcoal (B) Wood charcoal (C) Silica gel (D) Activated clay

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Last Answer : (A) Bone charcoal

Induction of vomiting is indicated for the accidental poisoning patient who has ingested a) aspirin. Overdose of aspirin should be treated with emesis or lavage, followed by ingestion of activated charcoal to absorb the aspirin.

Description : Induction of vomiting is indicated for the accidental poisoning patient who has ingested a) aspirin. Overdose of aspirin should be treated with emesis or lavage, followed by ingestion of ... d) toilet bowl cleaner. Toilet bowl cleaners are corrosive, and induced vomiting is contraindicated.

Last Answer : a) aspirin. Overdose of aspirin should be treated with emesis or lavage, followed by ingestion of activated charcoal to absorb the aspirin.

To prepare soils for the bioassay, her bicides get inactivated by a). Darco G-60 b). Activated charcoal c). a & b d). None

Description : To prepare soils for the bioassay, her bicides get inactivated by a). Darco G-60 b). Activated charcoal c). a & b d). None

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A 92-year-old woman is an inpatient in the geriatric unit. She has multivascular dementia. She is more confused and agitated. She has been given lorazepam 4 mg intramuscularly. She is now unconscious with a generalized tonic clonic seizure and a respiratory rate of 6 breaths per minute. Which of the following could be used to reverse the effects of the lorazepam? A. Activated charcoal B. Flumazenil C. N-acetyl cysteine D. Naloxone E. Protamine sulphate

Description : A 92-year-old woman is an inpatient in the geriatric unit. She has multivascular dementia. She is more confused and agitated. She has been given lorazepam 4 mg intramuscularly. She is now unconscious ... A. Activated charcoal B. Flumazenil C. N-acetyl cysteine D. Naloxone E. Protamine sulphate 

Last Answer : B. Flumazenil 

Charcoal is 'activated' by: w) heating it in the absence of air x) heating it in steam y) destructive distillation z) absorption

Description : Charcoal is 'activated' by: w) heating it in the absence of air x) heating it in steam y) destructive distillation z) absorption

Last Answer : ANSWER: X -- HEATING IT IN STEAM

Which of the following acts as best adsorbent? (1) Charcoal (2) Activated Charcoal (3) Activated Coconut Charcoal (4) Carbon black

Description : Which of the following acts as best adsorbent? (1) Charcoal (2) Activated Charcoal (3) Activated Coconut Charcoal (4) Carbon black

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Activated Charcoal is used to remove colouring matter from pure substances by (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Description : Activated Charcoal is used to remove colouring matter from pure substances by (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Last Answer : Adsorption

One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Description : One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Last Answer : (4) Its aqueous solution turns red litmus blue Explanation: The main use of litmus is to test whether a solution is acidic or basic. For instance, ammonia gas, which is alkaline, colours the red litmus paper blue.

One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Description : One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue

Last Answer :  Its aqueous solution turns red litmus blue

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ? -SST 10th

Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ? -SST 10th

Last Answer : D - The aqueous solution is a base as it turns red litmus solution blue. An acidic solution such as hydrochloric acid would reverse the change. In contrast, hydrochloric acid would turn blue ... not be able to reverse the change. These substances would only change red litmus solution to blue.

Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (

Description : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (

Last Answer : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` ( ... )` (xii) `COCl_(2)` (viii) `C Cl_(4)`

Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (

Description : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (

Last Answer : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` ( ... )` (xii) `COCl_(2)` (viii) `C Cl_(4)`

Clear organe solution of chromic anhydride in aqueous sulpuric acid turn blue-green on reaction with

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Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid

Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid

Last Answer : (d) Hydrochloric acid

In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is:

Description : In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is:

Last Answer : In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is: ... ` C. `:"CCl"_(2)` D. `COCl_(2)`

When `O_(2)` is adsorbed on a metallic surface, electron transfer electron transfer occurs from the metal to `O_(2).` The TRUE statement (s) regarding

Description : When `O_(2)` is adsorbed on a metallic surface, electron transfer electron transfer occurs from the metal to `O_(2).` The TRUE statement (s) regarding

Last Answer : When `O_(2)` is adsorbed on a metallic surface, electron transfer electron transfer occurs from the metal ... D. bong length of `O_(2)` is increased

Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the flooding velocity, generally (C) 'Elution' means the desorption of the adsorbed solute by a solvent (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Description : Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the ... (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Last Answer : (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

Pick out the wrong statement. Generally for physical adsorption, a gas of (A) Higher molecular weight is adsorbed in preference to a gas of low molecular weight (B) High critical temperature is adsorbed in preference to a gas of low critical temperature (C) Low volatility is adsorbed in preference to a gas of high volatility (D) None of these

Description : Pick out the wrong statement. Generally for physical adsorption, a gas of (A) Higher molecular weight is adsorbed in preference to a gas of low molecular weight (B) High critical temperature ... volatility is adsorbed in preference to a gas of high volatility (D) None of these

Last Answer : (D) None of these

What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?

Description : What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?

Last Answer : Haemocyanins are a group of proteins.

1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175

Description : 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175

Last Answer : (C) 0.2

Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation? (A) Langmuir's assumption applies to every adsorbed layer (B) There is no dynamic equilibrium between successive layer (C) The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process (D) None of these

Description : Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates ... (except the first one) is involved in each of the evaporation process (D) None of these

Last Answer : (B) There is no dynamic equilibrium between successive layer

The mass of argon adsorbed per unit mass of carbon surface is plotted against pressure. Which of the following plots is correct if x and m represent t

Description : The mass of argon adsorbed per unit mass of carbon surface is plotted against pressure. Which of the following plots is correct if x and m represent t

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This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. Is this substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride

Description : This noncombustible liquid in its dry form is noncorrosive to common metals except aluminum. About 90% of all of this material which is manufactured goes into the production of chlorofluorocarbons. ... substance: w) carbon tetrachloride x) methylene chloride y) hydrogen chloride z) methyl fluoride

Last Answer : ANSWER: W -- CARBON TETRACHLORIDE

For the synthesis of TMP from dump, a coenzyme is required which is (A) N10- Formyl tetrahydrofolate (B) N5- Methyl tetrahydrofolate (C) N5, N10- Methylene tetrahydrofolate (D) N5- Formimino tetrahydrofolate

Description : For the synthesis of TMP from dump, a coenzyme is required which is (A) N10- Formyl tetrahydrofolate (B) N5- Methyl tetrahydrofolate (C) N5, N10- Methylene tetrahydrofolate (D) N5- Formimino tetrahydrofolate

Last Answer : Answer : C

Neogenesis of methyl group is (A) The availability of methyl group form δ adenosyl methionine (B) The availability of methyl group from betaine (C) Interaction between N5 N10 methylene tetra hydrofolate with a NAD+ dependent reductase (D) Availability of methyl group from methyl B12

Description : Neogenesis of methyl group is (A) The availability of methyl group form δ adenosyl methionine (B) The availability of methyl group from betaine (C) Interaction between N5 N10 methylene tetra hydrofolate with a NAD+ dependent reductase (D) Availability of methyl group from methyl B12

Last Answer : Answer : C

Which of the following is a detergent? (A) Fatty alcohol (B) Alkyl benzene sulphonate (ABS) (C) Fatty acids (D) Methylene chloride

Description : Which of the following is a detergent? (A) Fatty alcohol (B) Alkyl benzene sulphonate (ABS) (C) Fatty acids (D) Methylene chloride

Last Answer : (B) Alkyl benzene sulphonate (ABS)

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene? (a) cyclopropane < cyclobutane < cyclohexane < cycloheptane (b) cyclohexane < cyclopentane < cyclobutane < cyclopropane (c) cyclopentane < cyclobutane < cyclopentane < cyclopropane (d) cyclopentane < cyclopropane < cyclobutane < cyclohexane

Description : Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene? (a) cyclopropane < cyclobutane < cyclohexane < cycloheptane (b) cyclohexane < ... < cyclobutane < cyclopentane < cyclopropane (d) cyclopentane < cyclopropane < cyclobutane < cyclohexane

Last Answer : cyclohexane < cyclopentane < cyclobutane < cyclopropane

Active methylene compounds are called as….. a. H-acid b. C-acid c. mineral acid d. Proton sponge

Description : Active methylene compounds are called as….. a. H-acid b. C-acid c. mineral acid d. Proton sponge

Last Answer : b. C-acid

Pick out the wrong statement. (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature (B) Normally, the gases which are easily liquefied are more soluble in common solvents (C) The gases which are capable of forming ions in aqueous solution are much more soluble in water than in other solvents (D) At constant pressure, solubility of a gas in a liquid increases with rise in temperature

Description : Pick out the wrong statement. (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature (B) Normally, the gases which are easily liquefied are more soluble ... (D) At constant pressure, solubility of a gas in a liquid increases with rise in temperature

Last Answer : (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature

Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is (A) Propane (B) Diethylene glycol (C) Aqueous solution (10% water) of diethylene glycol (D) Methyl ethyl ketone (MEK)

Description : Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is (A) Propane (B) Diethylene glycol (C) Aqueous solution (10% water) of diethylene glycol (D) Methyl ethyl ketone (MEK)

Last Answer : (C) Aqueous solution (10% water) of diethylene glycol

A process stream of dilute aqueous solution flowing at the rate of10 Kg.s -1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s -1 . A 1 - 1 shell and tube heat exchanger is available. The best arrangement is (A) Counter flow with process stream on shell side (B) Counter flow with process stream on tube side (C) Parallel flow with process stream on shell side (D) Parallel flow with process stream on tube side

Description : A process stream of dilute aqueous solution flowing at the rate of10 Kg.s -1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s -1 . A 1 ... side (C) Parallel flow with process stream on shell side (D) Parallel flow with process stream on tube side

Last Answer : (A) Counter flow with process stream on shell side

The correct sequence regarding base strength of aliphatic amines in aqueous solution is:

Description : The correct sequence regarding base strength of aliphatic amines in aqueous solution is:

Last Answer : The correct sequence regarding base strength of aliphatic amines in aqueous solution is: A. `R_(3)N gt R_(2) NH gt ... gt R_(2)NH gt R_(3)N gt NH_(3)`

The pH value of 12 may be of an aqueous solution of 1. Sodium hydroxide 2. Lithium hydroxide 3. Sodium chloride 4. Hydrogen chloride The correct statements are: (a) 1 and 2 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Description : The pH value of 12 may be of an aqueous solution of 1. Sodium hydroxide 2. Lithium hydroxide 3. Sodium chloride 4. Hydrogen chloride The correct statements are: (a) 1 and 2 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(a)

.Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, weaker the base (a) (i) and (iii) (b) (ii) and (iii (c) (i) and (iv) (d) (ii) and (iv)

Description : .Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, ... (i) and (iii) (b) (ii) and (iii (c) (i) and (iv) (d) (ii) and (iv)

Last Answer : (d) (ii) and (iv)

The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its (A) Integral heat of adsorption (B) Heat of wetting (C) Differential heat of adsorption (D) Heat of normal condensation

Description : The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its (A) Integral heat of adsorption (B) Heat of wetting (C) Differential heat of adsorption (D) Heat of normal condensation

Last Answer : (A) Integral heat of adsorption

Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke

Description : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke

Last Answer : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): ... D. If both Assertion & Reason are False.