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85401.

AgBr is soluble in hypo forming (a) ______.

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ANSWER :`Na_(2)[AG(S_(2)O_(3))_(2)]`
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?

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`CH_(2)=CH-CH_(3)`

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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`C_(6)H_(5)COOH`
HCOOH
`CH_(3)-COOH`

ANSWER :D
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 :-13842 JOULE =-13.842 KJ
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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4
6
8
10

Answer :B
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?

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`CH_(2) NH_(4)`

ANSWER :D
85407.

Ag_(2)S+NaCN+Zn to Ag+W In W the corrdination number of Z in

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SOLUTION :`Ag_(2)S+4NaCN hArr 2NA[AG(CN_(2))]+Na_(2)S`
`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.
85408.

Acid which was first synthesised from its elements:

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`HCOOH`
`CH_3COOH`
`HOOC - COOH`
NONE of the above STATEMENT is correct

Answer :B
85409.

Ag_(2)S + NaCN rarr (A) (A) + Zn rarr (B) (B) is a metal. Hence, (A) and (B) are

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`Na_(2)[ZN(CN)_(4)], Zn`
`NA[AG(CN)_(2)], Ag`
`Na_(2)[Ag)CN)_(4)], Ag`
`Na_(3)[Ag(CN)_(4)], Ag`

Answer :B
85410.

Acid strength of the conjugate acids of the following are

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IgtIIgtIIIgtIV
IIIgtIIgtIgtIV
IVgtIIIgtIIgtI
None of these

Solution :Stronger the base WEAKER is the acidic strength of CONGUGATE ACID
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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SODIUM hydroxide
MAGNESIUM hydroxide
aluminium hydroxide
almonium hydroxide

Solution :The increasing order of the BASE strength of the GIVE bases is
`NH_(4)OH lt AI(OH)_(3) ltMg(OH)_(2) lt NaOH`
85412.

Acid that contains S-O-S linkage is

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`H_(2)S_(2)O_(7)`
`H_(2)S_(2)O_(5)`
`H_(2)S_(2)O_(6)`
`H_(2)S_(2)O_(4)`

ANSWER :A
85413.

Acid rains are produced by

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excess `NO_2 and SO_2` from BURNING FOSSIL FUELS
excess production of `NH_3` by industry and coal gas
excess release of carbon monoxide by incomplete COMBUSTION
excess formation of `CO_2` by combustion and ANIMAL respiration.

Solution :Acid rains are produced by excess `NO_2 and SO_2` from burning fossil fuels.
85414.

Acidrainsare produced by :

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excess releaseofcarbonmonoxide by INCOMPLETECOMBUSTION
excess FORMATIONOF carbon dioxide by COMBUSTION and resiration.
excess production of `NH_(3)` byindustries.
excess `NO_(2)` and `SO_(2)` from burningfossilfuels.

Answer :D
85415.

Acid rain may cause

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 rusting easily
stone CANCER in Taj MAHAL
non-fertility of SOIL
 all are correct

Answer :D
85416.

Acid rain is due to increase in atmospheric concention of :

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OZONE and DUST
`CO_2` and `CO`
`SO_3` and `CO`
`SO_2` and `NO_2`

ANSWER :D
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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Excessive release of `CO_2` by burning of fuels like wood and charcoal, cutting of forests and increased animal population
Excessive release of `NO_2` and `SO_2` in ATMOSPHERE by burning of fossil fuel
Excessive release of `NH_3` by industrial plants and COAL gas
Excessive release of CO in atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuel in paucity of oxygen

Solution :When `SO_2` pollution in AIR is much HIGHER . Sometimes , `SO_2` mixes in the air with small particles of metals near the factories and gets oxidised into sulphur trioxide `SO_3`.These gases are harmful and they react with water to form sulphuric ACID `(H_2SO_4)` or sulphurous acid `(H_2SO_3)` and come down to earth with rain water, it is called acid rain or acid precipitation
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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excessive RELEASE of `CO_(2)` by burning of fuels LIKE woodand charcoal, cutting of forests and increased ANIMALPOPULATION
excessive release of `NO_(2) and SO_(2)` in atmosphere byburning of fossil fuel
excessive release of `NH_(3)` by industrial plants and coal gas
excessive release of CO in atmosphere by incomplete combustion of coke, charcoal and other CARBONACEOUS f i .1el in paucity of oxygen.

Solution :When `SO_(2)` pollution in air is much higher. Sometimes,
`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.
85419.

Acid rain has pHin the range

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`O-3`
`4-5`
`6-7`
`7-10`

ANSWER :B
85420.

Acid rain consists of mainly_______and_______.

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ANSWER :B::C::D
85421.

Ag_(2)S + NaCN + Zn to Ag+ 'W'In 'W'the coordination number of Zn is-

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ANSWER :4
85422.

Acid or enzymatic hydrolysis of sucrose to give anequimolar mixture of glucose and fructose is called

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esterification
inversion
saponification
insertion

Solution :SUCROSE is DEXTROROTATORY while an equimolar MIXTURE of glucose and fructose which it gives on hydrolysis is laevorotatory. Thus, inversion of optical rotation has occurred during hydrolysis. Thus this hydrolysis is called inversion.
85423.

..........acid is useful in lead storage cell.

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`HNO_(3)`
`H_(3)PO_(4)`
HCl
`H_(2)SO_(4)`

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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PARKE's method
McArthur - Forest method
Serpeck method
HALL's method

ANSWER :B
85425.

Acid hydrolysis of which of the following compound yield two different organic compound:-

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`CH_(3)COOH`
`CH_(3)CONH_(2)`
`CH_(3)COOC_(2)H_(5)`
`(C_(3)CO)_(2)O`

Solution :ACID hydrolysis of an ester gives two DIFFERENT organic compounds .
`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))`
85426.

Acid hydrolysis of X yields two different organic compounds. Which one of the following is X ?

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`CH_(3) COOH`
`CH_(3) CONH_(2)`
`CH_(3) COOC_(2) H_(5)`
`(CH_(3) CO)_(2) O`

ANSWER :C
85427.

Ag_2Sis soluble in NaCN due to the formation of :

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`Na[AG(CN)_2]`
`Ag(CN)_2`
`Na_2[Ag(CN)_3]`
`Na_2[Ag(CN)_4]` .

ANSWER :A
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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`CH_(3),CH=CH_(2) and CH_(3) - NO_(2)`
`CH_(2) =CH_(2) and C_(2)H_(5) -NO_(2)`
`CH_(3)CO-CH_(3) and CH_(3) -NO_(2)`
`CH_(3)-CHOH-CH_(3) and CH_(3) - N0_(2)`

SOLUTION :`CH_(3) - OVERSET(CH_(3)) overset(|)(CH) - CH = NOHunderset(" aceticacid")overset("Trifluoroperoxy") to CH_(3) overset(CH_(3))overset(|)(CH) - CH_(2) - NO_(2)`
85429.

Acidhydrolysis of starchat high temperatureand pressureproduces…….. .

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FRUCTOSE
GLUCOSE
both FRUCTOSEAND glucose
MALTOSE

ANSWER :B
85430.

Ag_(2)S is solublein NaCN due toformationof

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`NA[Ag(CN)_(2)]`
`Ag(CN)_(2)`
`Na_(2)[Ag(CN)_(3)]`
`Na_(2)[Ag(CN)_(2)]`

ANSWER :a
85431.

Acid hydrolysis of ester produces

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CARBOXYLIC ACID
ALCOHOL
carboxylic acid and alcohol
aldehyde and ketone

Answer :C
85432.

Acid hydrolysis of ester is a _____ order reaction

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SOLUTION :FIRST, TWO
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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`Na_2S`
`Na_2S_2O_3`
`Na_2SO_3`
`Na_2SO_4`

ANSWER :D
85434.

Alkali hydrolysis of ester is a _____ order reaction having molecularity_____.

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SOLUTION :FIRST, TWO
85435.

Acid hydrolysis of cyanide may produces

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CARBOXYLIC acid
mineral acid
ALDEHYDE
amine

ANSWER :A
85436.

Hydrolysis of benzonitrile gives

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benzlamine
ANILINE
BENZOIC ACID
phenol

Answer :C
85437.

Acidhydrolysis of 3^(0) - nitroalkane give

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ketones
CARBOXYLIC ACIDS
ALDEHYDES
no PRODUCT

Answer :D
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?

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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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zero order REACTION
Pseudo FIRST order reaction
second orderreaction
first order reaction

Answer :B
85440.

Acidformof 1^(0)nitroalkane is

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RED COLOUR
bluecolour
YELLOW colour
whitecolour

ANSWER :B
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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` AG +SO_2`
`AGCL +SO_2`
`AgCl+Na_2SO_4`
`Ag Cl+Na_2 S`

ANSWER :C
85442.

Acid chlorides when hydrolysed with water give _____________.

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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 :9
85444.

Acid chlorides react with Grignard's reagent to give :

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ESTERS
Ethers
Carbonyl COMPOUNDS
NONE

ANSWER :C
85445.

Acid chlorides are prepared industrially by:

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`RCOONA + PCl_(3)`
`RCOONa + POCl_(3)`
`RCOONa + SO_(2)Cl_(2)`
all of these

ANSWER :B
85446.

Ag_(2) S + 4 NaCN to 2X + Na_(2) S Incorrect statement about 'X'is

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X is anionic complex
In 'X'primary VALENCY and secondary valency of AG are 1 and 2
IUPAC and of 'X' is sodium dicyano-argentate (I)
IUPAC name of 'X' is sodium dicyanosilver (I)

ANSWER :D
85447.

acid chloride + alcohol toul?.

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ACIDS
amides
esters
amines

Answer :C
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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`2:3:4`
`1:1:1`
`1:3:5`
`1:3:7`

ANSWER :B
85449.

Acid chloride on reduction with Lithium Aluminiumhydrate gives_____

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SOLUTION :PRIMARY ALCOHOL
85450.

Acid chloride acids are prepared by treating carboxylic acids with ________ .

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`SOCl_(2)`
`PCl_(2)`
`PCl_(3)`
All the above

ANSWER :D