What is Phyto Hormone Catalyst ?

What is Phyto Hormone Catalyst ?
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Answer : Phyto Hormone Catalyst is an organic catalyst that converts soil organic matter into food juice. This is a catalyst for compatibility with soil and its compounds.
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The process of use of microorganism to remove salts from soil is referred as (A) Chelation (B) Bioremediation (C) Oxidation (D)Phyto – remediation

Description : The process of use of microorganism to remove salts from soil is referred as (A) Chelation (B) Bioremediation (C) Oxidation (D)Phyto – remediation

Last Answer : (B) Bioremediation

What is Catalyst Poison ?

Description : What is Catalyst Poison ?

Last Answer : Substances that reduce or even stop the catalytic ability of catalysts are called catalysts. Usually catalysts such as dust , sulfur powder , As2O3, etc. act as toxins.

What is an inequality catalyst ?

Description : What is an inequality catalyst ?

Last Answer : A catalyst is an asymmetric catalyst in which the participating objects and the physical state of the catalyst differ.

What is a homogeneous catalyst ?

Description : What is a homogeneous catalyst ?

Last Answer : If the phase of the catalyst and the reactant are the same, the present catalyst is called homogeneous catalyst.

What is a negative catalyst ?

Description : What is a negative catalyst ?

Last Answer : A catalyst that slows down a chemical reaction is called a negative catalyst.

What is a positive catalyst ?

Description : What is a positive catalyst ?

Last Answer : A catalyst in the presence of which the speed of a chemical reaction increases is called a positive catalyst.

(4) None of these Explanation: Catalysis is the change in rate of a chemical reaction due to the participation of a substance called a catalyst. Unlike other reagents that participate in the chemical reaction, a catalyst is not consumed by the reaction itself. A catalyst may participate in multiple chemical transformations. Catalysts that speed the reaction are called positive catalysts.

Description : (4) None of these Explanation: Catalysis is the change in rate of a chemical reaction due to the participation of a substance called a catalyst. Unlike other reagents that ... may participate in multiple chemical transformations. Catalysts that speed the reaction are called positive catalysts.

Last Answer : Table salt gets moist during rainy season because – (1) sodium chloride is hygroscopic (2) sodium chloride is deliquescent (3) sodium chloride contains some quantity of sodium iodide (4) sodium chloride contains hygroscopic impurities like magnesium chloride

Soap helps in better cleaning of clothes because - (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Description : Soap helps in better cleaning of clothes because - (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Last Answer : (2) It reduces the surface tension of solution Explanation: Soaps are effective cleaners because they can dissolve and the oil and grease that holds dirt in place. They reduce the surface tension of the ... surfactant molecules help water to get a hold of grease, break it up, and wash it away.

The metal that is used as a catalyst in the hydrogenation of oils is - (1) Pb (2) Ni (3) Cu (4) Pt

Description : The metal that is used as a catalyst in the hydrogenation of oils is - (1) Pb (2) Ni (3) Cu (4) Pt

Last Answer : (2) Ni Explanation: The catalyst used in hydrogenation of oils is nickel. It is used to speed up the reaction.

Which among the following is used as a catalyst in the production of high octane fuels? (1) HNO3 (2) H2SO4 (3) HCl (4) HF

Description : Which among the following is used as a catalyst in the production of high octane fuels? (1) HNO3 (2) H2SO4 (3) HCl (4) HF

Last Answer : (2) H2SO4 Explanation: Sulfuric acid is used as a catalyst for refining and for producing alkylate, an essential component of highoctane fuel. The hydrocarbon molecules are reformed into more complex molecules with a higher octane rating value.

The catalyst used in hydrogenation of oils is - (1) Fe (2) V2O5 (3) Ni (4) O2

Description : The catalyst used in hydrogenation of oils is - (1) Fe (2) V2O5 (3) Ni (4) O2

Last Answer : (3) Ni Explanation: The catalyst used in hydrogenation of oils is nickel. It is used to speed up the reaction. Vegetable oils convert into vanaspati after hydrogenation.

Freon is used as - (1) Oxidant (2) Refrigerant (3) Catalyst (4) Both (1) and (2)

Description : Freon is used as - (1) Oxidant (2) Refrigerant (3) Catalyst (4) Both (1) and (2)

Last Answer : (2) Refrigerant Explanation: Freon uses for a number of halocarbon products. They are stable, nonflammable, moderately toxic gases or liquids which have typically been used as refrigerants and as aerosol propellants.

Tetra ethyle lead (TEL) is - (1) a catalyst in burning fossil fuel (2) an antioxidant (3) areductant (4) an antiknock compound

Description : Tetra ethyle lead (TEL) is - (1) a catalyst in burning fossil fuel (2) an antioxidant (3) areductant (4) an antiknock compound

Last Answer : (4) an antiknock compound Explanation: Tetraethyl lead was extensively used as an additive to gasoline, wherein it served as an effective antiknock agent and prevented exhaust valve and seat wear. ... needed. Typical formulations called for 1 part of prepared TEL to 1260 parts untreated gasoline.

Photoxidation process is initiated by – (1) light (2) heat (3) oxygen (4) catalyst

Description : Photoxidation process is initiated by – (1) light (2) heat (3) oxygen (4) catalyst

Last Answer : (1) light Explanation: Oxidation is a process in which something (an atom or molecule or substance) loses an electron to something else. Photooxidation is therefore the process of oxidation which is ... as UV or artificial light. This process is the most significant factor in weathering of polymers.

What compounds are used as Catalyst in Petrochemical industry?

Description : What compounds are used as Catalyst in Petrochemical industry?

Last Answer : Ans. Zeolites are shape selective catalysts and used to convert alcohol into petroleum

What will be the effect on equilibrium if (i) a catalyst is added to it (ii) An inert gas is added at constant volume

Description : What will be the effect on equilibrium if (i) a catalyst is added to it (ii) An inert gas is added at constant volume

Last Answer : Ans. (i) The state of equilibrium is not disturbed on adding catalyst rather it is attained quickly. (ii) No effect on state of equilibrium

what is Zeigler-Natta catalyst?

Description : what is Zeigler-Natta catalyst?

Last Answer : Triethylaluminium (C2H5)3Al and titanium tetrachloride(TiCl4) Condensation polymerization or step growth: Since each step produces a functionalized species and is independent of each other,this is called step groth. As,monomers with ... NH2-(CH2)6-NH2] and Adipic acid[HOOC-(CH2)4-COOH in Nylon-6,6.

which catalyst is used in HDP like polythene?

Description : which catalyst is used in HDP like polythene?

Last Answer : A. Zeigler-Natta catalyst. 

During preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, water or the ester formed should be removed as soon as it is formed.

Description : During preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, water or the ester formed should be removed as soon as it is formed.

Last Answer : Ans. The formation of esters from a carboxylic acid and an alcohol in the presence of acid catalyst in a reversible reaction. To shift the equilibrium in the forward direction, the water or ester formed should be removed as fast as it is formed.

What is the hybridisation of central metal ion and shape of Wilkinson’s catalyst ?

Description : What is the hybridisation of central metal ion and shape of Wilkinson’s catalyst ?

Last Answer : Wilkinson’s catalyst is (PH3 P)3 RhCl. In this Rh has dsp² hybridisation and square planar shape.

Why does V2O5 acts as catalyst ?

Description : Why does V2O5 acts as catalyst ?

Last Answer : Ans : It is because V shows variable O.S . 

Defination of Catalyst

Description : Defination of Catalyst

Last Answer : Catalyst:- A substance which increase or decrease the rate of chemical reaction and quantitatively unchanged after the reaction known as catalyst. There are two types of catalyst:- (i) Positive Catalyst and (ii) Negative Catalyst.

Define catalyst.

Description : Define catalyst. 

Last Answer : A substance that either increases or decreases the rate of a chemical reaction without itself undergoing any chemical change during the reaction is called a catalyst.

Naphthalene undergoes reduction with H2 in the presence of Ni catalyst at high temperature and pressure to give (a) Phthalic acid (b) Decalin (c) Benzoic acid (d) Tetralin

Description : Naphthalene undergoes reduction with H2 in the presence of Ni catalyst at high temperature and pressure to give (a) Phthalic acid (b) Decalin (c) Benzoic acid (d) Tetralin

Last Answer : Decalin

Iodobenzene can be prepared by (a) treating chlorobenzene with I2 using FeCl3 catalyst. (b) treating phenol with I2 in NaOH solution. (c) treating benzenediazonium chloride with KI (d) treating benzene with CH3I using AlCl3 catalyst

Description : Iodobenzene can be prepared by (a) treating chlorobenzene with I2 using FeCl3 catalyst. (b) treating phenol with I2 in NaOH solution. (c) treating benzenediazonium chloride with KI (d) treating benzene with CH3I using AlCl3 catalyst

Last Answer : treating benzenediazonium chloride with KI

Benzene reacts with propene in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Cumene (d) Nothing happens

Description : Benzene reacts with propene in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Cumene (d) Nothing happens

Last Answer : Cumene

Benzene undergoes Friedel-Crafts reaction with isopropyl alcohol in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Isopropylbenzene (d) Nothing happens

Description : Benzene undergoes Friedel-Crafts reaction with isopropyl alcohol in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Isopropylbenzene (d) Nothing happens

Last Answer : Isopropylbenzene

Benzene reacts with chlorine in the presence of FeCl3 catalyst to form (a) Hexachlorobenzene (b) Chlorobenzene (c) Hexachlorocyclohexane (d) Benzyl chloride

Description : Benzene reacts with chlorine in the presence of FeCl3 catalyst to form (a) Hexachlorobenzene (b) Chlorobenzene (c) Hexachlorocyclohexane (d) Benzyl chloride

Last Answer : Chlorobenzene

Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs

Description : Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs

Last Answer : Cyclohexane

Which of the following agents is used in order to make benzene react with bromine to give bromobenzene? (a) Ultraviolet light (b) Fe catalyst (c) Nickel catalyst (d) Al2O3 catalyst

Description : Which of the following agents is used in order to make benzene react with bromine to give bromobenzene? (a) Ultraviolet light (b) Fe catalyst (c) Nickel catalyst (d) Al2O3 catalyst

Last Answer : Fe catalyst

Which of the following agents is used in order to make benzene react with acetyl chloride to give acetophenone?(a) Ultraviolet light (b) AlCl3 catalyst (c) Platinum catalyst (d) Al2O3 catalyst

Description : Which of the following agents is used in order to make benzene react with acetyl chloride to give acetophenone? (a) Ultraviolet light (b) AlCl3 catalyst (c) Platinum catalyst (d) Al2O3 catalyst

Last Answer : AlCl3 catalyst

Which of the following agents is used in order to make benzene react with concentrated nitric acid to give nitrobenzene? (a) Concentrated H2SO4 (b) FeCl3 catalyst (c) Lindlar's catalyst (d) Ultraviolet light

Description : Which of the following agents is used in order to make benzene react with concentrated nitric acid to give nitrobenzene? (a) Concentrated H2SO4 (b) FeCl3 catalyst (c) Lindlar's catalyst (d) Ultraviolet light

Last Answer : Concentrated H2SO4

Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°(b) It is immiscible with water forming the lower layer. (c) It can be converted into cyclohexane by hydrogenation at 200°C in the presence of Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene..

Description : Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°. (b) It is immiscible with water forming the lower layer. (c) It can be ... Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene.

Last Answer : It is immiscible with water forming the lower layer

What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the chain reaction. (b) It functions by destabilizing the carbocationic intermediate and thereby increases the rate of H+ loss. (c) It serves as a Lewis base catalyst by reacting with Cl2 to generate chloride ions. (d) It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.

Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Cyclobutane reacts with hydrogen in the presence of nickel catalyst at 200°C to give (a) Butane (b) 1-Butene (c) 2-Butene (d) None of these

Description : Cyclobutane reacts with hydrogen in the presence of nickel catalyst at 200°C to give (a) Butane (b) 1-Butene (c) 2-Butene (d) None of these

Last Answer : Butane

Partial hydrogenation of vegetable oils in the presence of Ni catalyst at 200°C gives (a) Vanaspati ghee (b) Margarine (c) Both of these (d) None of these

Description : Partial hydrogenation of vegetable oils in the presence of Ni catalyst at 200°C gives (a) Vanaspati ghee (b) Margarine (c) Both of these (d) None of these

Last Answer : Vanaspati ghee

Acetic acid reacts with methyl alcohol in the presence of an acid catalyst to give (a) Methyl formate (b) Ethyl formate (c) Methyl acetate (d) Ethyl acetate

Description : Acetic acid reacts with methyl alcohol in the presence of an acid catalyst to give (a) Methyl formate (b) Ethyl formate (c) Methyl acetate (d) Ethyl acetate

Last Answer : Methyl acetate

Ethylene reacts with oxygen in the presence of silver catalyst at 300°C to form (a) Diethyl ether (b) Ethylene glycol (c) Ethyl alcoho(d) Ethylene oxidel

Description : Ethylene reacts with oxygen in the presence of silver catalyst at 300°C to form (a) Diethyl ether (b) Ethylene glycol (c) Ethyl alcohol (d) Ethylene oxide

Last Answer : Ethylene oxide

A compound, C15H24, is reacted with excess hydrogen using a metal catalyst. One equivalent of the compound consumed three equivalents of hydrogen. Howmany rings did the original compound have? (a) 1 only (b) 2 only (c) 3 only (d) None of these

Description : A compound, C15H24, is reacted with excess hydrogen using a metal catalyst. One equivalent of the compound consumed three equivalents of hydrogen. How many rings did the original compound have? (a) 1 only (b) 2 only (c) 3 only (d) None of these

Last Answer : 1 only

Which one of the following is not a metal catalyst for the hydrogenation of an alkene? (a) Pd (b) Pt (c) Na(d) Ni

Description : Which one of the following is not a metal catalyst for the hydrogenation of an alkene? (a) Pd (b) Pt (c) Na (d) Ni

Last Answer : Na

2-Butyne undergoes catalytic hydrogenation in the presence of Lindlar's catalyst to give (a) 2-Butene (b) Butane (c) 1-Butene (d) 2-Methylpropene

Description : 2-Butyne undergoes catalytic hydrogenation in the presence of Lindlar's catalyst to give (a) 2-Butene (b) Butane (c) 1-Butene (d) 2-Methylpropene

Last Answer : 2-Butene

Propyne can be converted to propene by using (a) H2 + Lindlar's catalyst (b) NH2NH2 (c) H2 + Pt catalyst (d) NH2NH2 + KOH

Description : Propyne can be converted to propene by using (a) H2 + Lindlar's catalyst (b) NH2NH2 (c) H2 + Pt catalyst (d) NH2NH2 + KOH

Last Answer : H2 + Lindlar's catalyst

Lindlar's catalyst is(a) LiAlH4(b) Pd/BaSO4 in Quinoline(c) NH2NH2(d) HCl/ZnCl

Description : Lindlar's catalyst is (a) LiAlH4 (b) Pd/BaSO4 in Quinoline (c) NH2NH2 (d) HCl/ZnCl

Last Answer : Pd/BaSO4 in Quinoline

What is the product when 3-heptyne reacts with the Lindlar catalyst? (a) 2-methyl-2-heptene (b) trans-3-heptene (c) cis-2-methyl-3-hexene (d) cis-3-hexene

Description : What is the product when 3-heptyne reacts with the Lindlar catalyst? (a) 2-methyl-2-heptene (b) trans-3-heptene (c) cis-2-methyl-3-hexene (d) cis-3-hexene

Last Answer : cis-3-hexene

The reagent needed to convert 2-butyne to cis-2-butene is : (a) H2/Pt (b) H2/Lindlar’s catalyst (c) Li/NH3 (d) Na/NH3

Description : The reagent needed to convert 2-butyne to cis-2-butene is : (a) H2/Pt (b) H2/Lindlar’s catalyst (c) Li/NH3 (d) Na/NH3

Last Answer : H2/Lindlar’s catalyst

What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential energy of the reactants decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Description : What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential ... decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Last Answer : A The reaction follows an alternative pathway of lower activation energy.

Which one of the following statements regarding a catalyst is not correct? A An enzyme is a catalyst that only binds certain substrates. B An enzyme is a protein that is a highly efficient catalyst for one or more chemical reactions in a living system. C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.

Description : Which one of the following statements regarding a catalyst is not correct? A An enzyme is a catalyst that only binds certain substrates. B An enzyme is a protein that is a highly ... increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.

Last Answer : C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy.

Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst

Description : Consider the following gaseous equilibrium: PCl3 + Cl2 = PCl5 + heat. Which of the following changes will shift it to the right: w) lower the temperature x) remove some Cl2 y) increase the volume z) add a catalyst

Last Answer : ANSWER: W -- LOWER THE TEMPERATURE

In a photosynthesis reaction, chlorophyll is: w) a reactant w) a product y) a catalyst z) an intermediate

Description : In a photosynthesis reaction, chlorophyll is: w) a reactant w) a product y) a catalyst z) an intermediate

Last Answer : ANSWER: Y -- A CATALYST

Soap helps in better cleaning of clothes because (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Description : Soap helps in better cleaning of clothes because (1) Soap acts like catalyst (2) It reduces the surface tension of solution (3) It gives strength to solution (4) It absorbs the dirt

Last Answer : It reduces the surface tension of solution