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MCQOPTIONS
This section includes 1187 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 1051. |
A, 6 volume sample of \[{{H}_{2}}{{O}_{2}}\] |
| A. | will contain 6% V/V of \[{{H}_{2}}{{O}_{2}}\] |
| B. | will contain 6% W/V of \[{{H}_{2}}{{O}_{2}}\] |
| C. | would give 6 volumes of oxygen per unit volume of \[{{H}_{2}}{{O}_{2}}\] sample at STP |
| D. | would give 6 volumes of oxygen per unit weight of \[{{H}_{2}}{{O}_{2}}\] sample at STP |
| Answer» D. would give 6 volumes of oxygen per unit weight of \[{{H}_{2}}{{O}_{2}}\] sample at STP | |
| 1052. |
30 volume hydrogen peroxide means |
| A. | 30% of \[{{H}_{2}}{{O}_{2}}\] solution |
| B. | \[30\text{ }c{{m}^{3}}\] solution contains 1g of \[{{H}_{2}}{{O}_{2}}\] |
| C. | \[1\text{ }c{{m}^{3}}\] of solution liberates \[30\text{ }c{{m}^{3}}\] of \[{{O}_{2}}\] at STP |
| D. | \[30\text{ }c{{m}^{3}}\] of solution contains 1 mole of \[{{H}_{2}}{{O}_{2}}\] |
| Answer» D. \[30\text{ }c{{m}^{3}}\] of solution contains 1 mole of \[{{H}_{2}}{{O}_{2}}\] | |
| 1053. |
An orange coloured solution acidified with \[{{H}_{2}}S{{O}_{4}}\] and treated with a substance 'X' gives a blue coloured solution of\[Cr{{O}_{5}}\]. The substance 'X' is |
| A. | \[{{H}_{2}}{{O}_{2}}\] |
| B. | \[{{H}_{2}}O\] |
| C. | dil \[HCl\] |
| D. | conc \[HCl\] |
| Answer» B. \[{{H}_{2}}O\] | |
| 1054. |
Calgon used as a water softener is |
| A. | \[N{{a}_{2}}[N{{a}_{4}}{{(P{{O}_{3}})}_{6}}]\] |
| B. | \[N{{a}_{4}}[N{{a}_{2}}{{(P{{O}_{3}})}_{6}}]\] |
| C. | \[N{{a}_{4}}[N{{a}_{4}}{{(P{{O}_{4}})}_{5}}]\] |
| D. | \[N{{a}_{4}}[N{{a}_{2}}{{(P{{O}_{4}})}_{6}}]\] |
| Answer» B. \[N{{a}_{4}}[N{{a}_{2}}{{(P{{O}_{3}})}_{6}}]\] | |
| 1055. |
\[{{D}_{2}}O\] is preferred to \[{{H}_{2}}O,\]as a moderator, in nuclear reactors because |
| A. | \[{{D}_{2}}O\] slows down fast neutrons better |
| B. | \[{{D}_{2}}O\] has high specific heat |
| C. | \[{{D}_{2}}O\] is cheaper |
| D. | None of these |
| Answer» E. | |
| 1056. |
\[{{H}_{2}}{{O}_{2}}\] is always stored in black bottles because |
| A. | It is highly unstable |
| B. | Its enthalpy of decomposition is high |
| C. | It undergoes auto-oxidation on prolonged standing |
| D. | None of these |
| Answer» D. None of these | |
| 1057. |
\[HCl\] is added to following oxides. Which one would give \[{{H}_{2}}{{O}_{2}}\] |
| A. | \[Mn{{O}_{2}}\] |
| B. | \[Pb{{O}_{2}}\] |
| C. | \[BaO\] |
| D. | None |
| Answer» E. | |
| 1058. |
The oxidation states of most electronegative element in the products of reaction \[Ba{{O}_{2}}\] with dil \[{{H}_{2}}{{O}_{2}}\] are |
| A. | 0 and -1 |
| B. | -1 and -2 |
| C. | -2 and 0 |
| D. | -2 and +1 |
| Answer» C. -2 and 0 | |
| 1059. |
Acid catalyzed hydration of alkenes except ethane leads to the formation of |
| A. | mixture of secondary and tertiary alcohols |
| B. | mixture of primary and secondary alcohols |
| C. | secondary or tertiary alcohol |
| D. | primary alcohol |
| Answer» D. primary alcohol | |
| 1060. |
Which one of the following conformations of cyclohexane is chiral? |
| A. | Boat |
| B. | Twist boat |
| C. | Rigid |
| D. | Chair |
| Answer» C. Rigid | |
| 1061. |
The gas liberated by the electrolysis of dipotassium succinate solution is: |
| A. | Ethane |
| B. | Ethyne |
| C. | Ethene |
| D. | Propene |
| Answer» D. Propene | |
| 1062. |
Of the three isomeric \[{{C}_{3}}{{H}_{4}}\] hydrocarbons shown below how many can exist with all carbon and hydrogen nuclei located in a single plane |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 1063. |
In which step of the following reaction, \[s{{p}^{3}}\] carbon changes to \[s{{p}^{2}}\] carbon? |
| A. | Step 1 |
| B. | Step 2 |
| C. | Both |
| D. | None |
| Answer» C. Both | |
| 1064. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Melting point of n-butane is higher than propane. Reason: It is called oscillation effect. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1065. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Styrene on reaction with \[HBr\] gives 2-bromo-2- phenyl-ethane. Reason: Benzyl radical is more stable than alkyl radical. [AIIMS 2004] |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1066. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: 2 Bromobutane on reaction with sodium ethoxide in ethanol gives 1 butene as a major product. [AIIMS 2004] Reason: 1 Butene is more stable than 2 butene. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» E. | |
| 1067. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: All the hydrogen atoms in \[C{{H}_{2}}=C=C{{H}_{2}}\] lie in one plane. Reason: All the carbon atoms in it are \[s{{p}^{2}}\] hybridized. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» E. | |
| 1068. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Corey-House reaction can be used to prepare both symmetrical and unsymmetrical alkanes. Reason: The reaction involves the interaction between lithium dialkyl copper with an alkyl halide both of which may contain even or odd number of carbon atoms. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» B. If both assertion and reason are true but reason is not the correct explanation of the assertion. | |
| 1069. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Straight chain alkanes have very low octane number. Reason: Quality of gasoline is measured in terms of octane number. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1070. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Isobutane on oxidation with \[KMn{{O}_{4}}\] gives tert-butyl alcohol. Reason: Oxidising agents have no effect on alkanes. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1071. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion: Iodination of alkanes is reversible. Reason: Iodination is carried out in presence of iodic acid. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1072. |
Consider the following anions.When attached to \[s{{p}^{3}}\]-hydridized carbon, their leaving group ability in nucleophilic substitution reaction decreases in the order: |
| A. | \[I>II>III>IV\] |
| B. | \[I>II>IV>III\] |
| C. | \[IV>I>II>III\] |
| D. | \[IV>III>II>I\] |
| Answer» C. \[IV>I>II>III\] | |
| 1073. |
Arrange the following in order of decreasing rate of solvolysis with aqueous ethanol (fastest \[\to \] slowest) (1) (2) (3) |
| A. | 2>1>3 |
| B. | 1>2>3 |
| C. | 2>3>1 |
| D. | 1>3>2 |
| Answer» D. 1>3>2 | |
| 1074. |
Identify Z in \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\xrightarrow{aq.\,NaOH}X\] \[\xrightarrow{A{{l}_{2}}{{O}_{3}}}Y\xrightarrow{C{{l}_{2}}/{{H}_{2}}O}Z\] |
| A. | Mixture of \[C{{H}_{3}}CHClC{{H}_{2}}Cl\] and \[C{{H}_{3}}CHOHC{{H}_{2}}Cl\] |
| B. | \[C{{H}_{3}}CHOHC{{H}_{2}}Cl\] |
| C. | \[C{{H}_{3}}CHClC{{H}_{2}}OH\] |
| D. | \[C{{H}_{3}}CHClC{{H}_{2}}Cl\] |
| Answer» C. \[C{{H}_{3}}CHClC{{H}_{2}}OH\] | |
| 1075. |
The compound\[{{C}_{7}}{{H}_{8}}\xrightarrow{3C{{l}_{2}}/\Delta }A\xrightarrow{B{{r}_{2}}/Fe}B\xrightarrow{Zn/HCl}C\].The compound C is |
| A. | o-Bromotoluene |
| B. | m-Bromotoluene |
| C. | p-Bromotoluene |
| D. | 3-Bromo-2,4,6-trichlorotoluene |
| Answer» C. p-Bromotoluene | |
| 1076. |
The major product formed when 1,1,1 -trichloro- propane is treated with aqueous potassium hydroxide is: |
| A. | Propyne |
| B. | 1-Propanol |
| C. | 2-Propanol |
| D. | Propionic acid |
| Answer» E. | |
| 1077. |
\[{{C}_{2}}{{H}_{5}}Br\xrightarrow{AgCN}X\xrightarrow[Zn-Hg/HCl]{Reduction}Y,Here\] Y is |
| A. | Ethyl methyl amine |
| B. | n-propylamine |
| C. | Isopropylamine |
| D. | Ethylamine |
| Answer» B. n-propylamine | |
| 1078. |
Arrange the following compounds in order of increasing dipole moment:(I) Toluene(II) m-dichlorobenzene(III) o-dichlorobenzene(IV) p-dichlorobenzene |
| A. | \[I<IV<II<III\] |
| B. | \[IV<I<II<III\] |
| C. | \[IV<I<III<II\] |
| D. | \[IV<II<I<III\] |
| Answer» C. \[IV<I<III<II\] | |
| 1079. |
Assertion: Alkyl halides form alkenes when heated above\[300{}^\circ C\].Reason: \[C{{H}_{3}}C{{H}_{2}}I\] react slowly with strong base when compared to\[C{{D}_{3}}C{{H}_{2}}I\].Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» D. If the assertion and reason both are false. | |
| 1080. |
Assertion: Halogen acids react with alcohols to form haloalkanes.Reason: Order of reactivity of halogen acids \[HCl>HBr>HI\]Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» D. If the assertion and reason both are false. | |
| 1081. |
Assertion: Alkyl halides are soluble in organic solvents.Reason: p-dichlorobenzene possesses low melting point.Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» D. If the assertion and reason both are false. | |
| 1082. |
Assertion: Addition of bromine to trans-2-butene yields meso-2, 3-dibromobutaneReason: Bromine addition to an alkene is an electrophilic addition. [IIT-JEE (Screening) 2001]Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» C. If assertion is true but reason is false. | |
| 1083. |
Assertion: \[CHC{{l}_{3}}\] is stored in transparent bottles.Reason: \[CHC{{l}_{3}}\] is oxidised in dark. [AIIMS 1996]Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» E. | |
| 1084. |
Assertion: Staggered form is less stable than the eclipsed form. Reason: The conformation in which the bond pairs of two central atoms are very far from one another is called staggered form. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. | |
| 1085. |
Assertion: Cyclohexanone exhibits keto-enol tautomerism. Reason: In cyclohexanone, one form contains the keto group (C = O) while other contains enolic group \[(-C=C-OH)\]. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. [a] In cyclohexanone keto enol tautomerism is as follows |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. | |
| 1086. |
Assertion: Each carbon in ethylene molecule is \[s{{p}^{2}}\] hybridised. Reason: The \[H-C-H\] bond angle in ethylene molecule is 120°. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. [b] Each carbon atom in ethylene is attached to two hydrogen atoms by single covalent bonds and to another carbon atoms by a double bond. Since each carbon is attached to three other atoms, it uses \[s{{p}^{2}}\] hybrid orbitals and an unhybridised \[{{p}_{Z}}\] orbital to form its bond. Each \[C-H\] bond is a \[\sigma \] bond resulting from the overlap of \[1s\] orbital of hydrogen atom and \[s{{p}^{2}}\] orbital of a carbon atom. One \[C-C\] bond results from the linear overlap of \[s{{p}^{2}}\] orbitals one from each carbon atom. One \[\pi \]bond results from the lateral overlap of two unhybridised \[{{p}_{Z}}\] orbitals, one from each carbon atom. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. | |
| 1087. |
Assertion: The order of reactivity of carbonium ions is \[2{}^\circ >3{}^\circ >1{}^\circ \]. Reason: Carbon atom in carbonium ions is in \[s{{p}^{3}}\] state of hybridisation. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. [d] The order of reactivity of carbonium ions is \[1{}^\circ >2{}^\circ >3{}^\circ \]. Carbon atom in carbonium ion is in \[s{{p}^{2}}\] state of hybridisation. The three hybridized orbitals lie in the same plane and are involved in the formation of three s bonds with three atoms or groups while the unhybridised p-orbital remains vacant. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. [d] The order of reactivity of carbonium ions is \[1{}^\circ >2{}^\circ >3{}^\circ \]. Carbon atom in carbonium ion is in \[s{{p}^{2}}\] state of hybridisation. The three hybridized orbitals lie in the same plane and are involved in the formation of three s bonds with three atoms or groups while the unhybridised p-orbital remains vacant. | |
| 1088. |
Assertion: Heterolytic fission involves the breaking of a covalent bond in such a way that both the electrons of the shared pair are carried away by one of the atoms. Reason: Heterolytic fission occurs readily in polar covalent bonds. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. [b] Heterolytic fission occurs when the two atoms differ considerably in their electronegativities and shared pair of electrons is carried by more electronegative atom. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. | |
| 1089. |
Assertion: Tertiary carbonium ions are generally formed more easily than primary carbonium ions. Reason: Hyperconjugative as well as inductive effect due to additional alkyl groups stabilize tertiary carbonium ions. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. [a] An alkyl group attached to the positively charged carbon of a carbonium ion tends to release electrons towards that carbon; thus the positive charges gets dispersed as the alkyl group becomes somewhat positively charged itself. More the number of alkyl groups, the greater is the dispersal of positive charge and therefore more easily it will be formed. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» 3orre3t 1nswer:. If the assertion and reason both are false. | |
| 1090. |
Assertion: Effect of temperature of \[{{K}_{c}}\ \text{or}\ {{K}_{p}}\]depends on enthalpy change. Reason: Increase in temperature shifts the equilibrium in exothermic direction and decrease in temperature shifts the equilibrium position in endothermic direction. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» D. If the assertion and reason both are false. | |
| 1091. |
Assertion: Catalyst affects the final state of the equilibrium. Reason: It enables the system to attain a new equilibrium state by complexing with the reagents. Read the assertion and reason carefully to mark the correct option out of the options given below: |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| Answer» E. | |
| 1092. |
Which of the following statement(s) is/are true about waste recycling? (i) Clothes can be made from recycled plastic waste. (ii) Fuel that has high octane rating and contains no lead can be obtained from plastic waste. (iii) Technology has now been developed to produce electricity from the garbage. |
| A. | (ii) only |
| B. | (ii) and (iii) |
| C. | (iii) only |
| D. | All of these |
| Answer» E. | |
| 1093. |
Which among the following statements is false? |
| A. | Oil slick in sea water increases D.O. value |
| B. | The main reason for river water pollution is industrial and domestic sewage discharge |
| C. | Surface water contains a lot of organic matter mineral nutrients and radioactive materials |
| D. | Oil spill in sea water causes heavy damage to fishery |
| Answer» B. The main reason for river water pollution is industrial and domestic sewage discharge | |
| 1094. |
Which of the following statements about the depletion of ozone layer is correct? |
| A. | The problem of ozone depletion is less serious at poles because \[N{{O}_{2}}\] solidifies and is not available for consuming \[CI{{O}^{\bullet }}\] radicals. |
| B. | The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \[C{{l}^{\bullet }}\] and \[CI{{O}^{\bullet }}\] radicals. |
| C. | Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere. |
| D. | Oxides of nitrogen also do not react with ozone in stratosphere. |
| Answer» D. Oxides of nitrogen also do not react with ozone in stratosphere. | |
| 1095. |
Ozone is an important constituent of stratosphere because it |
| A. | destroys bacteria which are harmful to human life. |
| B. | prevents the formation of smog over large cities. |
| C. | removes poisonous gases of the atmosphere by reacting with them. |
| D. | absorbs ultraviolet radiation which is harmful to human life. |
| Answer» E. | |
| 1096. |
The statement which is not true |
| A. | \[N{{O}_{2}}\] does not play any role in photochemical smog |
| B. | \[S{{O}_{3}}\] is more harmful air polluntant than \[S{{O}_{2}}\] |
| C. | \[S{{O}_{2}}\] dos not affect larynx (voice box) |
| D. | NO is more toxic to living tissues than \[N{{O}_{2}}\] |
| Answer» C. \[S{{O}_{2}}\] dos not affect larynx (voice box) | |
| 1097. |
Which causes death of fishes in water bodies polluted by sewage? |
| A. | Foul smell |
| B. | Pathogens |
| C. | Clogging of gills by silt |
| D. | Decrease in D.O. |
| Answer» E. | |
| 1098. |
The false statement among the followings: |
| A. | The average residence time of NO is one month. |
| B. | Limestone acts as a sink for \[S{{O}_{x}}\]. |
| C. | \[S{{O}_{x}}\] can be removed from flue gases by passing through a solution of citrate ions. |
| D. | Ammonia acts as a sink for \[N{{O}_{x}}\]. |
| Answer» B. Limestone acts as a sink for \[S{{O}_{x}}\]. | |
| 1099. |
For a given reaction: \[M(x+n)+n{{e}^{-}}\xrightarrow{{}}{{M}^{x+}},{{E}^{-}}_{red}\] is known along with \[{{M}^{(x+n)}}\] and \[{{M}^{x+}}\] ion concentrations. Then |
| A. | n can be evaluated |
| B. | x can be evaluated |
| C. | \[\left( x+n \right)\] can be evaluated |
| D. | \[n,x,\left( x+n \right)\] can be evaluated |
| Answer» B. x can be evaluated | |
| 1100. |
Consider the following standard electrode potentials and calculate the equilibrium constant at 25° C for the indicated disproportion nation reaction:\[3M{{n}^{2+}}(aq)\xrightarrow{{}}Mn(s)+2M{{n}^{3+}}(aq)\]\[M{{n}^{3+}}\left( aq \right)+{{e}^{-}}\xrightarrow{{}}M{{n}^{2+}}\left( aq \right);{{E}^{{}^\circ }}=1.51\text{ }V\]\[M{{n}^{2+}}(aq)+2{{e}^{-}}\xrightarrow{{}}Mn(s);E{}^\circ =-1.185V\] |
| A. | \[1.2\times {{10}^{-43}}\] |
| B. | \[2.4\times {{10}^{-73}}\] |
| C. | \[6.3\times {{10}^{-92}}\] |
| D. | \[1.5\times {{10}^{-62}}\] |
| Answer» D. \[1.5\times {{10}^{-62}}\] | |