Assertion: Conc `H_(2)SO_(4)` cannot be used for drying up `H_(2)S` Reason : Conc `H_(2)SO_(4)` oxidises `H_(2)S` to S

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Answer :

Assertion: Conc `H_(2)SO_(4)` cannot be used for drying up `H_(2)S` Reason : Conc `H_(2 ... D. Statement-I is not correct and Statement-II is correct

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Description : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following elements is oxidised

Last Answer : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which ... products ? A. Cu B. S C. C D. Zn

Description : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. `P_(4)O_(10)` III. Anhydrous `CaC1_(2)` IV. Anhydro

Last Answer : Which of the following compounds can be used for drying of `H_(2)S` gas? I. Conc `H_(2)SO_(4)` II. ` ... IV B. only I C. only II and III D. only III

Description : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R): The reaction involves cleavage of C-O bo

Last Answer : Assertion (A): Diethyl ether reacts with hot Conc `H_(2)SO_(4)` and gives ethyl hydrogen sulphate Reason (R ... R is false D. A is false but R is true

Description : Assertion (A): Dehydration of alcohols can be carried out with Conc `H_(2)SO_(4)` but not with conc HCl Reason (R): `H_(2)SO_(4)` is dibasic while HCl

Last Answer : Assertion (A): Dehydration of alcohols can be carried out with Conc `H_(2)SO_(4)` but not with conc HCl ... R is false D. A is false but R is true

Description : Hydrogen sulphide cannot be dried by passing through conc. `H_(2)SO_(4)` . Why ?

Last Answer : Hydrogen sulphide cannot be dried by passing through conc. `H_(2)SO_(4)` . Why ? A. The acid ... C. Both form complex D. It dissovles in the acid

Description : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P (51%), Q (47%) and R(2%). The major product (s) of the fol

Last Answer : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P ... of the following reaction sequence is (are) B. C. D.

Description : A Unknown salt (S) when heated with dil `H_(2)SO_(4)` does not evolve brown vapours but with conc. `H_(2)SO_(4)` brown vapours are obtained. The vapou

Last Answer : A Unknown salt (S) when heated with dil `H_(2)SO_(4)` does not evolve brown vapours but with conc. `H_(2)SO_(4)` ... 3)^(-)` C. `I^(-)` D. `Br^(-)`

Description : Let us consider the gases: `H_(2)S,CO_(2)` and `NH_(3)` How many of these gases can be dried by conc `H_(2)SO_(4)` ?

Last Answer : Let us consider the gases: `H_(2)S,CO_(2)` and `NH_(3)` How many of these gases can be dried by conc `H_(2)SO_(4)` ?

Description : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives elemental sulphur. Reason: `SO_(2)` is a reducing agent.

Last Answer : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives ... is False. D. If both Assertion & Reason are False.

Description : Assertion : A white turbidity is obtained by passing `H_(2)S` through aq solution of `SO_(2)` Reason: Aq solution of `SO_(2)` and `H_(2)S` undergoes r

Last Answer : Assertion : A white turbidity is obtained by passing `H_(2)S` through aq solution of `SO_(2 ... Statement-I is not correct and Statement-II is correct

Description : Which of the following yields But-2 ene on dehydration with conc.`H_(2)SO_(4)`?

Last Answer : Which of the following yields But-2 ene on dehydration with conc.`H_(2)SO_(4)`? A. 2-Methyl-2- ... 2-Propanol C. 2-Methyl-2-propanol D. Butan-2-ol

Description : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii),"conc." H_(2)SO_(4) + KCl rarr),((iii),"conc." H_

Last Answer : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii)," ... ,((ix),"conc." H_(2)SO_(4) + Cu rarr,,):}`

Description : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii),"conc." H_(2)SO_(4) + KCl rarr),((iii),"conc." H_

Last Answer : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii)," ... ,((ix),"conc." H_(2)SO_(4) + Cu rarr,,):}`

Description : which one of the following salts will evolve halogen on treatment with conc. `H_(2)SO_(4)` ?

Last Answer : which one of the following salts will evolve halogen on treatment with conc. `H_(2)SO_(4)` ? A. (A) NaCI B. KI C. (C) NaBr D. (D) none of these

Description : Which of the following complexes will be dehydrated to relatively minimum extent by conc. `H_(2)SO_(4)` under identical condition .

Last Answer : Which of the following complexes will be dehydrated to relatively minimum extent by conc. `H_(2)SO_(4)` under ... O)_(6)]Cl_(3)` D. all of these

Description : Reddis-brown gas is obtained when the following are treated with conc. `H_(2)SO_(4)` ?

Last Answer : Reddis-brown gas is obtained when the following are treated with conc. `H_(2)SO_(4)` ? A. `Br^(-)` B. `NO_(2)^(-)` C. `NO_(3)^(-)` D. `SO_(3)^(2-)`

Description : `B_(3)^(3-)+Conc.H_(2)SO_(4)+CH_(3)-CH_(2)-OH overset(ignite)rarr(A)` What is the oxidation number of central atom that is responsible for green flame

Last Answer : `B_(3)^(3-)+Conc.H_(2)SO_(4)+CH_(3)-CH_(2)-OH overset(ignite)rarr(A)` What is the ... atom that is responsible for green flame in compound `(A)`?

Description : When a mixture of solid NaCl, solid `K_(2)Cr_(2)O_(7)` is heated with conc. `H_(2)SO_(4)` orange red vapours are obtained. These are of the compound

Last Answer : When a mixture of solid NaCl, solid `K_(2)Cr_(2)O_(7)` is heated with conc. `H_(2 ... B. chromyl chloride C. chromic chloride D. chromic sulphate

Description : Which of the following anion behaves in a different manner than other on heating with conc. `H_(2)SO_(4)` ?

Last Answer : Which of the following anion behaves in a different manner than other on heating with conc. `H_(2)SO_(4) ... Br^(-)` D. All behave in a similar manner

Description : Which of the following pair of anions are identified by conc. `H_(2)SO_(4)`.

Last Answer : Which of the following pair of anions are identified by conc. `H_(2)SO_(4)`. A. `NO_(3)^(-), CO_(3)^(2-)` B. ... -)` D. `CO_(3)^(2-), CH_(3)CO O^(-)`

Description : If addition of conc. `H_(2)SO_(4)` is made to an unknown salt, a colourless and odouriess gas is produced then which of the following can be present ?

Last Answer : If addition of conc. `H_(2)SO_(4)` is made to an unknown salt, a colourless and odouriess gas is produced then which ... C. `Cl^(-)` D. `NO_(3)^(-)`

Description : Which anion does not liberate any gas with dilute as well as conc. `H_(2)SO_(4)`.

Last Answer : Which anion does not liberate any gas with dilute as well as conc. `H_(2)SO_(4)`. A. `NO_(2)^(-)` B. `NO_(3)^(-)` C. `SO_(3)^(2-)` D. `SO_(4)^(2-)`

Description : In the nitration of benzene with a mixture of conc. `HNO_(3)` and conc. `H_(2)SO_(4)`, the active species involved is :

Last Answer : In the nitration of benzene with a mixture of conc. `HNO_(3)` and conc. `H_(2)SO_(4)`, ... ion B. nitrate ion C. nitronium ion D. nitrogen dioxide

Description : Which is dehydrated to maximum extent using conc. `H_(2)SO_(4)`?

Last Answer : Which is dehydrated to maximum extent using conc. `H_(2)SO_(4)`? A. B. C. D.

Description : Phenol when condensed with phthalic anhydride in the presence of conc. `H_(2)SO_(4)`, yields `,`

Last Answer : Phenol when condensed with phthalic anhydride in the presence of conc. `H_(2)SO_(4)`, yields ... orange B. Phenolphthaline C. Aspirin D. Methyl Blue

Description : `"phenol" overset(conc.H_(2)SO_(4))rarrA overset(conc.HNO_(3))rarrB` Here A and B are respectively.

Last Answer : `"phenol" overset(conc.H_(2)SO_(4))rarrA overset(conc.HNO_(3))rarrB` Here A and B ... 4-dinitrophenol D. 3-Hydroxybenzene sulphonic acid, picric acid

Description : Anisole with conc. `HNO_(3)` and conc. `H_(2)SO_(4)` gives

Last Answer : Anisole with conc. `HNO_(3)` and conc. `H_(2)SO_(4)` gives A. Phenol B. Nitrobenzene C. O - and - P - Nitroanisole D. O- Nitroanisole

Description : An organic liquid `A` containing `C,H` and `O` has a pleasant odour with a boiling point of `78^(@)C`. On boiling. A with conc. `H_(2)SO_(4)` a colour

Last Answer : An organic liquid `A` containing `C,H` and `O` has a pleasant odour with a boiling point of `78^(@)C`. On boiling ... . `C_(2)H_(5)OH` D. `C_(2)H_(6)`

Description : Which of the following alkenes when passed through conc. `H_(2)SO_(4)` followed by hydrolysis with boiling water would give tert-butyl alcohol

Last Answer : Which of the following alkenes when passed through conc. `H_(2)SO_(4)` followed by hydrolysis with ... B. Isobutylene C. Propylene D. But-1-ene

Description : `Ph - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - underset(OH) underset(|)overset(Ph)overset(|)(C) - Ph underset(H_(2)SO_(4))overset("Conc"

Last Answer : `Ph - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - underset(OH) underset(|)overset(Ph)overset(| ... ) - underset(O)underset(||)(C) - CH_(3)`

Description : An organic liquid `A` containing `C,H` and `O` has a pleasant odour with a boiling point of `78^(@)C`. On boiling. A with conc. `H_(2)SO_(4)` a colour

Last Answer : An organic liquid `A` containing `C,H` and `O` has a pleasant odour with a boiling point of `78^(@)C`. On boiling ... . `C_(2)H_(6)` D. `C_(2)H_(5)OH`

Description : Among the following the number of compounds that can act as dehydrating agent are …… `Conc. H_(2)SO_(4),"Anhyd". CaCl_(2),Conc. HNO_(3), CaO, CuSO_(4)

Last Answer : Among the following the number of compounds that can act as dehydrating agent are `Conc. H_(2)SO_(4),"Anhyd" ... CaO, CuSO_(4).5H_(2)O, P_(2)O_(5)`

Description : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : It is due to Hydrogen bonding

Last Answer : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : ... Statement-I is not correct and Statement-II is correct

Description : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : It is due to Hydrogen bonding

Last Answer : Statement-I : Conc. `H_(2)SO_(4)` is low volatillity and viscos nature acid Statement-II : ... Statement-I is not correct and Statement-II is correct

Description : The element evoloving two different gases on reaction with conc. `H_(2)SO_(4)` is :

Last Answer : The element evoloving two different gases on reaction with conc. `H_(2)SO_(4)` is : A. P B. C C. Hg D. S.

Description : Conc. `H_(2)SO_(4)` is not

Last Answer : Conc. `H_(2)SO_(4)` is not A. Hygroscopic B. Dehydrating agent C. Sulphonating agent D. efflorescent

Description : Assertion: Wrough iron is prepared from cast iron by oxidising impurities in a reverberatory furnace lined with haematite. Reason: Haematite oxidises

Last Answer : Assertion: Wrough iron is prepared from cast iron by oxidising impurities in a reverberatory furnace lined ... -1 is false but Statement -2 is true

Description : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`

Last Answer : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`

Description : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in `SF_(6)` prevent the attack of `H_(2)O` on sulphur atom of `SF_

Last Answer : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in ` ... D. Statement-I is not correct and Statement-II is correct

Description : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,

Last Answer : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it , A. (A) ... (C) disproportionates HBr D. (D) reacts slowly with NaBr

Description : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,

Last Answer : Concentrated `H_(2)SO_(4)` cannot be used to prepare HBr from NaBr , because it ,

Description : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l)Delta H` and `Delta E` both are zero. Reason :- During isothermal

Last Answer : Assertion :- At constant temp `0^(@)C` and 1 atm, the change `H_(2)O(s)rarr H_(2)O(l) ... Reason is False. D. If both Assertion & Reason are false.

Description : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is nwgative. Reason :- During phase transition work done is alway

Last Answer : Assertion :- At constant pressure for the change `H_(2)O(s)rarr H_(2)O(g)` work done is ... is False. D. If both Assertion & Reason are false.

Description : Assertion :- `H_(2)S+Cl_(2)rarr2HCl+S` In the above reaction, Cl has been oxidised to `Cl^(-)` while `S^(-2)` has been reduced to S Reason :- In a rea

Last Answer : Assertion :- `H_(2)S+Cl_(2)rarr2HCl+S` In the above reaction, Cl has been oxidised to `Cl^(-)` ... is False. D. If both Assertion & Reason are False.

Description : Assertion :- A sol of `As_(2)S_(3)` prepared by the action of `H_(2)S` on `As_(2)O_(3)` is negatively charge. Reason :- Due to adsorption of `S^(-2)`

Last Answer : Assertion :- A sol of `As_(2)S_(3)` prepared by the action of `H_(2)S` on `As_(2)O_(3) ... Reason is False. D. If both Assertion & Reason are False.

Description : Assertion :-`CO_(2)` molecules is non-polar while `SO_(2)` Reason : - Carbon atom is smaller than sulphur.

Last Answer : Assertion :-`CO_(2)` molecules is non-polar while `SO_(2)` Reason : - Carbon atom is smaller ... is False. D. If both Assertion & Reason are false

Description : Assertion(A): In the fermentation process of molasses, along with yeast `(NH_(4))_(2)SO_(4), (NH_(4))_(3) PO_(4)` is added Reason (R): `(NH_(4))_(3)PO

Last Answer : Assertion(A): In the fermentation process of molasses, along with yeast `(NH_(4))_(2)SO_(4), (NH_(4))_ ... but R is false D. A is false but R is true

Description : Assertion: Bleaching action of `SO_(2)` is temporary whereas bleaching action of `Cl_(2)` is permanent. Reason: Bleaching by `SO_(2)` and `Cl_(2)` is

Last Answer : Assertion: Bleaching action of `SO_(2)` is temporary whereas bleaching action of `Cl_(2)` is permanent. ... )` and `Cl_(2)` is due to oxidation.

Description : Assertion: `SO_(3)` acts as an oxidising agent as well as a reducing agent Reason: `SO_(2)` acts as an oxidising as well as a reducing agent

Last Answer : Assertion: `SO_(3)` acts as an oxidising agent as well as a reducing agent Reason: `SO_(2)` acts as an oxidising as well as a reducing agent

Description : Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2)` is due to its readucing nature

Last Answer : Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2 ... Statement-I is not correct and Statement-II is correct