This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 85402. |
Acidic and basic nature of organic compound depends upon-Inductive effect. Acidic strength of organic acid increase with increase in electron withdrawing group or - group and decrease withincrease in electron releasing group or + group. Basic strength of organic compound having just opposite relationship with inductive effect, i.e. basic strength prop+1 effecte position of equilibrium of ionization in water. In other words acid strength is the function of the stability of conjugate base of the acid. More is the stability of conjugate base of the acid, more is the acidity of acid.Which one of the following is most acidic in character? |
| Answer» ANSWER :B | |
| 85403. |
Acidic and basic nature of organic compound depends upon-Inductive effect. Acidic strength of organic acid increase with increase in electron withdrawing group or - group and decrease with increase in electron releasing group or + group. Basic strength of organic compound having just opposite relationship with inductive effect, i.e. basic strength prop+1 effect Which of the following acid having highest K_(a) value |
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Answer» `C_(6)H_(5)COOH` |
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| 85404. |
Ag|Ag^(+) ("sat "Ag_(2)CrO_(4)" solution") ||Ag^(+) (0.1M)|Ag is 0.164 at 298K The emf of cells Zn| ZnSO_(4)||CuSO_(4), Cu" at "25^(@)C is 0.03 V and temperature coefficient of emf is 1.4 xx 10^(-4) V per degree. Calculate the heat of reaction for the change taking place inside the cell. |
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Answer» |
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| 85405. |
Ag_(2)S +underset("Excess")(KCN) to [Ag(CN)_(x)]^(-n) [Ag (CN)_(x)]^(-n) +Zn to [Zn (CN)_(y)]^(-m) Find the sum of x and y |
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Answer» 4 |
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| 85406. |
Acidic and basic nature of organic compound depends upon-Inductive effect. Acidic strength of organic acid increase with increase in electron withdrawing group or - group and decrease with increase in electron releasing group or + group. Basic strength of organic compound having just opposite relationship with inductive effect, i.e. basic strength prop+1 effect Which one is strong acid among these? |
| Answer» ANSWER :D | |
| 85407. |
Ag_(2)S+NaCN+Zn to Ag+W In W the corrdination number of Z in |
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Answer» `4Na_(2)S+5O_(2)+2H_(2)O to 2Na_(2)SO_(4)+4NaOH+2S` `2Na[Ag(CN)_(2)]+Zn to Na_(2) underset((A))[Zn(CN)_(4)]+2Ag` In the compound ()A the coordination number of zn is 4. |
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| 85408. |
Acid which was first synthesised from its elements: |
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Answer» `HCOOH` |
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| 85409. |
Ag_(2)S + NaCN rarr (A) (A) + Zn rarr (B) (B) is a metal. Hence, (A) and (B) are |
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Answer» `Na_(2)[ZN(CN)_(4)], Zn` |
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| 85410. |
Acid strength of the conjugate acids of the following are |
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Answer» IgtIIgtIIIgtIV |
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| 85411. |
Acid turns blue litmus red and base turn red litmus blue A student tested a liquied with a red litmus paper which remained red with no change this shows that the liquid |
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Answer» SODIUM hydroxide `NH_(4)OH lt AI(OH)_(3) ltMg(OH)_(2) lt NaOH` |
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| 85412. |
Acid that contains S-O-S linkage is |
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Answer» `H_(2)S_(2)O_(7)` |
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| 85413. |
Acid rains are produced by |
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Answer» excess `NO_2 and SO_2` from BURNING FOSSIL FUELS |
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| 85414. |
Acidrainsare produced by : |
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Answer» excess releaseofcarbonmonoxide by INCOMPLETECOMBUSTION |
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| 85415. |
Acid rain may cause |
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Answer» rusting easily |
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| 85416. |
Acid rain is due to increase in atmospheric concention of : |
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Answer» OZONE and DUST |
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| 85417. |
Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmosphere pollution by |
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Answer» Excessive release of `CO_2` by burning of fuels like wood and charcoal, cutting of forests and increased animal population |
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| 85418. |
Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by |
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Answer» excessive RELEASE of `CO_(2)` by burning of fuels LIKE woodand charcoal, cutting of forests and increased ANIMALPOPULATION `SO_(2)` mixes in the air with small particles of metals nearthe2factories and gets oxidised into sulphur trioxide `SO_(3)`. These gases are harmful and they react with waterto form sulphuric acid `(H_(2)SO_(4))` or sulphurous acid `(H_(2)SO_3)`and come down to earth with rain water, it iscalled acid rain or acid precipitation. |
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| 85422. |
Acid or enzymatic hydrolysis of sucrose to give anequimolar mixture of glucose and fructose is called |
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Answer» esterification |
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| 85423. |
..........acid is useful in lead storage cell. |
| Answer» Answer :D | |
| 85424. |
Ag_(2)S + NaCN + Zn""Ag This method of extraction of Ag by complex formation and then its displacement is called |
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Answer» PARKE's method |
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| 85425. |
Acid hydrolysis of which of the following compound yield two different organic compound:- |
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Answer» `CH_(3)COOH` `CH_(3)COOC_(2)H_(5)+H_(2)OtoCH_(3)COOH+C_(2)H_(5)OH` While the acid hydrolysis of an amide gives one organic and one INORGANIC product is `CH_(3)CONH_(2)+H_(2)O to underset("organic compound")(CH_(3)COOH)+underset("inorganic compound")(NH_(3))` |
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| 85426. |
Acid hydrolysis of X yields two different organic compounds. Which one of the following is X ? |
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Answer» `CH_(3) COOH` |
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| 85427. |
Ag_2Sis soluble in NaCN due to the formation of : |
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Answer» `Na[AG(CN)_2]` |
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| 85428. |
Acid hydrolysis of following compound gives CH_(3) - overset(CH_(3))overset(|)(C) = CH - NO_(2) overset(H_(3)O^(+))to? |
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Answer» `CH_(3),CH=CH_(2) and CH_(3) - NO_(2)` |
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| 85429. |
Acidhydrolysis of starchat high temperatureand pressureproduces…….. . |
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Answer» FRUCTOSE |
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| 85430. |
Ag_(2)S is solublein NaCN due toformationof |
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Answer» `NA[Ag(CN)_(2)]` |
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| 85431. |
Acid hydrolysis of ester produces |
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Answer» CARBOXYLIC ACID |
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| 85433. |
Ag_2S is digested with 1% solution of NaCN and air is blown into the solution, then sulphur in Ag_2S is finally converted to |
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Answer» `Na_2S` |
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| 85434. |
Alkali hydrolysis of ester is a _____ order reaction having molecularity_____. |
| Answer» SOLUTION :FIRST, TWO | |
| 85435. |
Acid hydrolysis of cyanide may produces |
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Answer» CARBOXYLIC acid |
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| 85437. |
Acidhydrolysis of 3^(0) - nitroalkane give |
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Answer» ketones |
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| 85438. |
Ag_(2)O and HgO are unstable at moderate temprature and they will decompose on heating even in the absence of reducing agent .Why? |
| Answer» SOLUTION :ELLINGHAM diagram for the formation of `Ag_(2)O` and HgO is at upper part of the diagram and their decomposition tempratures are 600 and 700 K respectively .It indicates that these oxides are unstable at moderate tempratures and will decompose on heating EVEN in the absence of a reducing AGENT. | |
| 85439. |
Acid hydrolysis of an ester is an example of ............. |
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Answer» zero order REACTION |
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| 85440. |
Acidformof 1^(0)nitroalkane is |
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Answer» RED COLOUR |
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| 85441. |
Ag_(2)S or inmixed with NaCl and heated to 6000^(@) in the presence of air t5hen product formed are |
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Answer» ` AG +SO_2` |
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| 85442. |
Acid chlorides when hydrolysed with water give _____________. |
| Answer» SOLUTION :CARBOXYLIC ACIDS | |
| 85443. |
A(g) to B(g) + C(g) Initial concentration of A is 20 M and concentration of C after 18 minutes is 15 M then calculate half life time (in minues) of reaction (Assuming decomposition of A follows first order Kinetics). |
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Answer» |
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| 85444. |
Acid chlorides react with Grignard's reagent to give : |
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Answer» ESTERS |
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| 85445. |
Acid chlorides are prepared industrially by: |
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Answer» `RCOONA + PCl_(3)` |
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| 85446. |
Ag_(2) S + 4 NaCN to 2X + Na_(2) S Incorrect statement about 'X'is |
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Answer» X is anionic complex |
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| 85448. |
A(g) rarr 2B(g)+C(g) Initially at t=0 gas Awas present with some amount of gas 'C' At t=0 mole fraction of gas C is 1/3 After some time t=t_(1) total pressure is half of the final total pressure at t=t_(x) (a very long time) Assume this decomposition is a first order, at a constant temperature It is also given at t=t_(x) final total pressure is 35 bar. Ratio of rate constant at t=0 to t=t_(1) to t=t_(x) is: |
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Answer» `2:3:4` |
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| 85449. |
Acid chloride on reduction with Lithium Aluminiumhydrate gives_____ |
| Answer» SOLUTION :PRIMARY ALCOHOL | |
| 85450. |
Acid chloride acids are prepared by treating carboxylic acids with ________ . |
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Answer» `SOCl_(2)` |
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