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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 48651. |
AlF_3 is soluble in HF only in presence of KF. It is due to the formation of… |
| Answer» <html><body><p>`AlH_3`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a>[AlF_3H]`<br/>`K_3[AlF_3H_3]`<br/>`K_3[AlF_6]`</p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`AlF_3 + 3KF to K_3[AlF_6]`</body></html> | |
| 48652. |
Aldol condensation proceeds by carbon- carbon bond formation between an enolation donor and a carbonyl acceptor For each of the following aldol products (1 through 4)Match the donor and acceptor compound. |
| Answer» <html><body><p><br/></p>Solution :`A) Ph-CH_(2)-<a href="https://interviewquestions.tuteehub.com/tag/cho-408392" style="font-weight:bold;" target="_blank" title="Click to know more about CHO">CHO</a> to`<a href="https://interviewquestions.tuteehub.com/tag/donor-958335" style="font-weight:bold;" target="_blank" title="Click to know more about DONOR">DONOR</a>& Acceeptor <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_310_S01.png" width="80%"/><br/>It has `alpha` -H `so donor<br/>B) `<a href="https://interviewquestions.tuteehub.com/tag/hcho-479433" style="font-weight:bold;" target="_blank" title="Click to know more about HCHO">HCHO</a> to `Acceptor<br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_310_S02.png" width="80%"/><br/>It has`alpha -H""alpha -H""because` donor<br/>Ph -CHO <a href="https://interviewquestions.tuteehub.com/tag/tono-1421304" style="font-weight:bold;" target="_blank" title="Click to know more about TONO">TONO</a> `alpha-H ""because "AcceptorBased onProducr"`(D)<br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_310_S03.png" width="80%"/>has`alpha- H`andactas donor</body></html> | |
| 48653. |
Aldol addition is nucleophllic addition reaction of carbonyl compound with enolate or enolate ion of aldehyde and ketones. The reaction between two molecules of acetaldehyde takes place as following in the presence of base.Driving force for the aldol condensation is : |
| Answer» <html><body><p>Formation of conjugated carbonyl <a href="https://interviewquestions.tuteehub.com/tag/compound-926863" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOUND">COMPOUND</a> as a product<br/>Formation and stability of <a href="https://interviewquestions.tuteehub.com/tag/enolate-2613787" style="font-weight:bold;" target="_blank" title="Click to know more about ENOLATE">ENOLATE</a> ion <br/>Only the <a href="https://interviewquestions.tuteehub.com/tag/reactivity-1178275" style="font-weight:bold;" target="_blank" title="Click to know more about REACTIVITY">REACTIVITY</a> of carbonyl group for <a href="https://interviewquestions.tuteehub.com/tag/nucleophilic-582063" style="font-weight:bold;" target="_blank" title="Click to know more about NUCLEOPHILIC">NUCLEOPHILIC</a> addition<br/>all of these</p>Answer :b</body></html> | |
| 48654. |
Aldol addition is nucleophllic addition reaction of carbonyl compound with enolate or enolate ion of aldehyde and ketones. The reaction between two molecules of acetaldehyde takes place as following in the presence of base. Which carbonyl compound wll be most reactiove for aldol addition ? |
| Answer» <html><body><p>`C_(<a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a>)H_(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)-CH_(2)-CHO`<br/>`CH_(3)-CHO`<br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_381_O01.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NAR_CHM_XII_V04_C03_E01_381_O02.png" width="30%"/></p>Answer :C</body></html> | |
| 48655. |
Aldol addition is nucleophllic addition reaction of carbonyl compound with enolate or enolate ion of aldehyde and ketones. The reaction between two molecules of acetaldehyde takes place as following in the presence of base. Simple aldol addition is given by : |
| Answer» <html><body><p>`C_(6)H_(5)CHO`<br/>`CX_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)-CHO`<br/>`O_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)N-Ph-CHO`<br/>`C_(6)H_(5)-CH_(2)-CHO`</p>Answer :D</body></html> | |
| 48656. |
Aldehydes and ketones are.............isomers. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/functional-466801" style="font-weight:bold;" target="_blank" title="Click to know more about FUNCTIONAL">FUNCTIONAL</a> <a href="https://interviewquestions.tuteehub.com/tag/isomers-1052476" style="font-weight:bold;" target="_blank" title="Click to know more about ISOMERS">ISOMERS</a></body></html> | |
| 48657. |
Aldehyde can be isomertic functionally with |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/alcohols-371072" style="font-weight:bold;" target="_blank" title="Click to know more about ALCOHOLS">ALCOHOLS</a> <br/>ethers<br/>esters<br/>Ketones</p>Answer :D</body></html> | |
| 48658. |
Aldehyde and ketones may be prepared by reductive cleavage of carbon-carbon double bonds. A particularly useful reagent for this purpose is ozone under reductive condition in the formation of carbonylcompounds. products Which of the following products is not formed in above reaction. |
| Answer» <html><body><p><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_090_O01.png" width="30%"/> <br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_090_O02.png" width="30%"/> <br/>`<a href="https://interviewquestions.tuteehub.com/tag/h-1014193" style="font-weight:bold;" target="_blank" title="Click to know more about H">H</a>-<a href="https://interviewquestions.tuteehub.com/tag/underset-3243992" style="font-weight:bold;" target="_blank" title="Click to know more about UNDERSET">UNDERSET</a>(O)underset(||)(S)-H`<br/>`CH_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)-underset(O)underset(||)(C)-H`</p>Solution :<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_SIPOC_E03_090_S01.png" width="80%"/></body></html> | |
| 48659. |
Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination , this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose beta-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol gt secondary school gt Primary alcohol. Identify the product in the given reaction : |
| Answer» <html><body><p><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_031_O01.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_031_O02.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_031_O03.png" width="30%"/><br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_031_O04.png" width="30%"/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 48660. |
Alcohols undergo acid catalysed elimination reactions to produce alkenes. Because water is lost in the elimination , this reaction is called dehydration reaction. Secondary and tertiary alcohols always give E1 reaction in dehydration. Primary alcohols whose beta-carbon is branched also give E1 reaction. The reactivity of alcohol for elimination reaction is tertiary alcohol gt secondary school gt Primary alcohol. Which of the following dehydration product (major ) is incorrect ? |
| Answer» <html><body><p><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_030_O01.png" width="30%"/><br/>`CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-oversetoverset(<a href="https://interviewquestions.tuteehub.com/tag/oh-585115" style="font-weight:bold;" target="_blank" title="Click to know more about OH">OH</a>)(|)CH-CH_3underset(<a href="https://interviewquestions.tuteehub.com/tag/delta-947703" style="font-weight:bold;" target="_blank" title="Click to know more about DELTA">DELTA</a>)<a href="https://interviewquestions.tuteehub.com/tag/overset-2905731" style="font-weight:bold;" target="_blank" title="Click to know more about OVERSET">OVERSET</a>(conc.H_2SO_4)to CH_3-undersetunderset(CH_3)(|)oversetoverset(CH_3)(|)C-CH=CH_2`<br/>`CH_3CH_2CH_2CH_2OHunderset(Delta)overset(conc.H_2SO_4)to CH_3-CH=CH-CH_3`<br/><img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_ORM_IV_E02_030_O04.png" width="30%"/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48661. |
Alcohols reacts with Grignard reagent to form |
| Answer» <html><body><p>Alkanes<br/>Alkenes<br/>Alkynes<br/>All</p>Solution :`C_(2)H_(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)OH+CH_(3)MgI <a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a> CH_(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)+C_(2)H_(5)OMgI`.</body></html> | |
| 48662. |
Alcohols, phenols and acids can be distinguished by reaction with |
| Answer» <html><body><p>`NaHCO_(3)`<br/>`NaOH`<br/>`FeCl_(3)`<br/>all the above</p>Solution :(a) <a href="https://interviewquestions.tuteehub.com/tag/alcohols-371072" style="font-weight:bold;" target="_blank" title="Click to know more about ALCOHOLS">ALCOHOLS</a> and phenols can be distinguished by NaOH and `FeCl_(3)` solution (b) Phenol and acid can be distinguised by `NaHCO_(3)`</body></html> | |
| 48663. |
Alcohols of low molecular weight are |
| Answer» <html><body><p>Soluble in water<br/>Soluble in water on heating <br/>Insoluble in water<br/>Insoluble in all solvents</p>Solution :These <a href="https://interviewquestions.tuteehub.com/tag/question-25051" style="font-weight:bold;" target="_blank" title="Click to know more about QUESTION">QUESTION</a> are <a href="https://interviewquestions.tuteehub.com/tag/based-389387" style="font-weight:bold;" target="_blank" title="Click to know more about BASED">BASED</a> <a href="https://interviewquestions.tuteehub.com/tag/upon-2315586" style="font-weight:bold;" target="_blank" title="Click to know more about UPON">UPON</a> <a href="https://interviewquestions.tuteehub.com/tag/facts-16997" style="font-weight:bold;" target="_blank" title="Click to know more about FACTS">FACTS</a> or formulae</body></html> | |
| 48664. |
Alcohols may act as |
| Answer» <html><body><p>Oxidisingagent<br/>Reducing agent<br/><a href="https://interviewquestions.tuteehub.com/tag/lewis-541347" style="font-weight:bold;" target="_blank" title="Click to know more about LEWIS">LEWIS</a> base<br/><a href="https://interviewquestions.tuteehub.com/tag/bronsted-2008521" style="font-weight:bold;" target="_blank" title="Click to know more about BRONSTED">BRONSTED</a> acid</p>Solution :Alcohols can act as Lewis base. <br/> `R-underset(..)<a href="https://interviewquestions.tuteehub.com/tag/overset-2905731" style="font-weight:bold;" target="_blank" title="Click to know more about OVERSET">OVERSET</a>(..)(O)-<a href="https://interviewquestions.tuteehub.com/tag/h-1014193" style="font-weight:bold;" target="_blank" title="Click to know more about H">H</a>+H^(+) <a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a> R-underset(..)overset(H)overset(|)(O^(+))-H` <br/> Alcohols can also act as Bronsted acid. <br/>`R-underset(..)overset(..)(O)-H rarr R-underset(..)overset(..)(O):^(-)+H^(+)`</body></html> | |
| 48665. |
Alcohols are weaker acids than water. Why ? |
| Answer» <html><body><p></p>Solution :In alcohol <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/SKM_COMP_CHM_V02_XI_C12_S01_111_S01.png" width="80%"/>, the alkyl group has `+ I` <a href="https://interviewquestions.tuteehub.com/tag/effect-966056" style="font-weight:bold;" target="_blank" title="Click to know more about EFFECT">EFFECT</a>. It <a href="https://interviewquestions.tuteehub.com/tag/increases-1040626" style="font-weight:bold;" target="_blank" title="Click to know more about INCREASES">INCREASES</a> the electron density on the <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> atom. As a <a href="https://interviewquestions.tuteehub.com/tag/result-1187343" style="font-weight:bold;" target="_blank" title="Click to know more about RESULT">RESULT</a>, the release of `H^(+)` ion from alcohol is more difficult than from water or alcohol is a weaker <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a>.</body></html> | |
| 48666. |
Dehydrohalogenation involves removal of the halogenn atom together with a hydrogen atom from carbon adjacent to the one with halogen atom. Alcoholic KOH is used for dehydrohalogenation. According to saytzeff's rule, when two alkenes may be formed, the alkene which is most substituted is the major product. Q. The ease of dehydrohalogenation for different halogens is in the order |
| Answer» <html><body><p>dehydrogenation<br/>dehalogenation <br/>dehydration<br/>dehydrohalogenation</p>Answer :D</body></html> | |
| 48667. |
Alcoholic solution of KOH is a specific reagent for |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/dehydration-436492" style="font-weight:bold;" target="_blank" title="Click to know more about DEHYDRATION">DEHYDRATION</a> <br/>dehydrogenation<br/>dehydrohalogenations. <br/><a href="https://interviewquestions.tuteehub.com/tag/dehalogenation-947405" style="font-weight:bold;" target="_blank" title="Click to know more about DEHALOGENATION">DEHALOGENATION</a>. </p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 48668. |
Alcoholic beverages are made of |
| Answer» <html><body><p>Ethanol<br/>Acetic acid<br/>Formic acid<br/>None of these</p>Answer :A</body></html> | |
| 48669. |
Alcohol on refluxing with K_2 Cr_2 O_7 gives ..... |
| Answer» <html><body><p>Ester<br/>Aldehyde <br/><a href="https://interviewquestions.tuteehub.com/tag/sugar-1233697" style="font-weight:bold;" target="_blank" title="Click to know more about SUGAR">SUGAR</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/carboxylic-2500076" style="font-weight:bold;" target="_blank" title="Click to know more about CARBOXYLIC">CARBOXYLIC</a> <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a><br/></p>Solution :Carboxylic acid</body></html> | |
| 48670. |
Alcohol on refluxing with K_(2)Cr_(2)O_(7) gives ............... |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<a href="https://interviewquestions.tuteehub.com/tag/carboxylic-2500076" style="font-weight:bold;" target="_blank" title="Click to know more about CARBOXYLIC">CARBOXYLIC</a> <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a></body></html> | |
| 48671. |
Alcohol level in blood is determined by the reaction with K_2Cr_2O_7 solution in acidic medium. Calculate the blood level in mass percent if 10 " mL of " 0.05 M solution of K_2Cr_2O_7 is required for the reaction of a 10.0 g sample of blood. |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :Mole method: <br/> Balance the redox reaction of `C_2H_5OH` with `Cr_2O_7^(2-)` in acidic <a href="https://interviewquestions.tuteehub.com/tag/medium-1092763" style="font-weight:bold;" target="_blank" title="Click to know more about MEDIUM">MEDIUM</a> (Mw of `C_2H_5OH=46g)` <br/> `cancel6e^(-)+Cr_2O_7^(2-)to2Cr^(3+)]xx2` <br/> `underline(C_2H_5OHto2CO_2+cancel(12e^(-))` <br/> `underline(C_2H_5OH+2Cr_2O_7^(2-)to4Cr^(3+)+2CO_2)` <br/> For 2 " mol of "`Cr_2O_7^(2-)-=<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> " mol of "C_2H_5OH` is required `10xx0.05xx10^(-3) " mol of "Cr_2O_7^(2-)` <br/> `-=(10xx0.05xx10^(-3))/(2) " mol of "C_2H_5OH` <br/> `-=25xx10^(-5)` " mol of "`C_2H_5OH` <br/> `-=25xx10^(-5)xx46g of C_2H_5OH` <br/> Percent of alcohol `-=(25xx10^(-5)xx46)/(10)xx100=0.115%` <br/> Equivalent method: <br/> `Cr_2O_7^(2-)-=C_2H_5OH` <br/> `1mEq-=1mEq` <br/> `10xx0.05xx6m" Eq of "Cr_2O_7^(2-)=3 mEq-=3 m" Eq of "C_2H_5OH` <br/> `3 mEq-=3 mEq` <br/> `3m" Eq of "C_2H_5OH-=3xx10^(-3)eq-=3xx10^(-3)xx(<a href="https://interviewquestions.tuteehub.com/tag/46-317673" style="font-weight:bold;" target="_blank" title="Click to know more about 46">46</a>)/(12)g` <br/> Percent of alcohol `-=(3xx10^(-3)xx46xx100)/(<a href="https://interviewquestions.tuteehub.com/tag/12xx10-1784290" style="font-weight:bold;" target="_blank" title="Click to know more about 12XX10">12XX10</a>)-=0.115%`</body></html> | |
| 48672. |
Alcohol fermentation is brought about by the action of |
| Answer» <html><body><p>`CO_(2)`<br/>`O_(2)`<br/><a href="https://interviewquestions.tuteehub.com/tag/invertase-518949" style="font-weight:bold;" target="_blank" title="Click to know more about INVERTASE">INVERTASE</a><br/>Yeast</p>Solution :Both invertase and <a href="https://interviewquestions.tuteehub.com/tag/zymase-1467881" style="font-weight:bold;" target="_blank" title="Click to know more about ZYMASE">ZYMASE</a> are <a href="https://interviewquestions.tuteehub.com/tag/contained-7275946" style="font-weight:bold;" target="_blank" title="Click to know more about CONTAINED">CONTAINED</a> in yeast.</body></html> | |
| 48673. |
AlCl_3 molecule is exist in which form ? |
| Answer» <html><body><p>Dimer<br/>Polymer<br/>Monomer<br/>None of the above</p>Answer :A</body></html> | |
| 48674. |
AlCl_(3) on hydrolysis gives |
| Answer» <html><body><p>`Al_(2)O_(3).H_(2)O`<br/>`Al(OH)_(3)`<br/>`Al_(2)O_(3)`<br/>`ACl_(3).6H_(2)O`</p>Solution :`AlCl_(3)` on hydrolysis <a href="https://interviewquestions.tuteehub.com/tag/gives-1007647" style="font-weight:bold;" target="_blank" title="Click to know more about GIVES">GIVES</a> `Al(OH)_(3)` and <a href="https://interviewquestions.tuteehub.com/tag/hcl-479502" style="font-weight:bold;" target="_blank" title="Click to know more about HCL">HCL</a>. <br/> `AlCl_(3)+3H_(2)O <a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a> Al(OH)_(3)+3HCl`</body></html> | |
| 48675. |
AlCl_(3) is usedas a catalyst in _______. |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/wurtz-3287156" style="font-weight:bold;" target="_blank" title="Click to know more about WURTZ">WURTZ</a> <a href="https://interviewquestions.tuteehub.com/tag/synthesis-658129" style="font-weight:bold;" target="_blank" title="Click to know more about SYNTHESIS">SYNTHESIS</a> <br/>Saponificationof <a href="https://interviewquestions.tuteehub.com/tag/esters-13663" style="font-weight:bold;" target="_blank" title="Click to know more about ESTERS">ESTERS</a> <br/><a href="https://interviewquestions.tuteehub.com/tag/williamson-743729" style="font-weight:bold;" target="_blank" title="Click to know more about WILLIAMSON">WILLIAMSON</a> synthesis <br/>friedelcraftreaction</p>Answer :D</body></html> | |
| 48676. |
AlCl_3 is a Lewis acid. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a></body></html> | |
| 48677. |
AlCl_(3) is a Leis acid than BCl_(3). |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/weaker-3271297" style="font-weight:bold;" target="_blank" title="Click to know more about WEAKER">WEAKER</a></body></html> | |
| 48678. |
AlCl_(3) is |
| Answer» <html><body><p>An hydrous and <a href="https://interviewquestions.tuteehub.com/tag/covalent-427060" style="font-weight:bold;" target="_blank" title="Click to know more about COVALENT">COVALENT</a> <br/>An hydrous and <a href="https://interviewquestions.tuteehub.com/tag/ionic-1051191" style="font-weight:bold;" target="_blank" title="Click to know more about IONIC">IONIC</a> <br/>Covalent and basic <br/><a href="https://interviewquestions.tuteehub.com/tag/co-920124" style="font-weight:bold;" target="_blank" title="Click to know more about CO">CO</a> - ordinate and acidic</p>Solution :An hydrous and co-valent.</body></html> | |
| 48679. |
AlCl_(3) fumes in moist air because |
| Answer» <html><body><p>It is very volatile<br/>It is covalent<br/>HCl is formed in moist air<br/>It is <a href="https://interviewquestions.tuteehub.com/tag/highly-2102664" style="font-weight:bold;" target="_blank" title="Click to know more about HIGHLY">HIGHLY</a> hygroscopic</p>Solution :Anhydrous `AlCl_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)` <a href="https://interviewquestions.tuteehub.com/tag/fumes-1001776" style="font-weight:bold;" target="_blank" title="Click to know more about FUMES">FUMES</a> in moist air because of hydrolysis. <br/> `AlCl_(3)+3H_(2)O rarr Al(<a href="https://interviewquestions.tuteehub.com/tag/oh-585115" style="font-weight:bold;" target="_blank" title="Click to know more about OH">OH</a>)_(3)+3HCl` <br/> HCl so produced fumes in moist air.</body></html> | |
| 48680. |
AlCl_(3) exists as dimer because |
| Answer» <html><body><p>Al has greater <a href="https://interviewquestions.tuteehub.com/tag/ionisation-1051250" style="font-weight:bold;" target="_blank" title="Click to know more about IONISATION">IONISATION</a> potential<br/>Al has larger radius<br/>High <a href="https://interviewquestions.tuteehub.com/tag/charge-914384" style="font-weight:bold;" target="_blank" title="Click to know more about CHARGE">CHARGE</a> in nucleus<br/><a href="https://interviewquestions.tuteehub.com/tag/incomplete-505597" style="font-weight:bold;" target="_blank" title="Click to know more about INCOMPLETE">INCOMPLETE</a> p-subshells</p>Solution :`AlCl_(3)` exist as <a href="https://interviewquestions.tuteehub.com/tag/dimer-954231" style="font-weight:bold;" target="_blank" title="Click to know more about DIMER">DIMER</a> because of incomplete p-subshell.</body></html> | |
| 48681. |
AlCl _(3) is …………. Compound whereas PCl_(5)is …………… compound in terms of octer rule. |
| Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :electron-deficient, hypervalnet</body></html> | |
| 48682. |
Al[BH_(4)]_(3) contains how many 3 centered -2e^(-) bonds. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_ELT_AO_CHE_XI_V01_C_C04_E03_034_S01.png" width="80%"/></body></html> | |
| 48683. |
Al^(3+) ions replace Na^+ ions at the edge centres of NaCl lattice. The number of vacancies in one mole NaCl is found to bex xx 10^23 . The value of x approximately is |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a></body></html> | |
| 48684. |
Al^(3+) ions replace Na^(+) ions at the edge centres of NaCl lattice. The number of vacancies in one mole NaCl is found to be x10^(23). The value of xapproximately is |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a></body></html> | |
| 48685. |
Al_(2)O_(3) formation involves large quantity of heat evolution which makes its use in |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/deoxidiser-2572025" style="font-weight:bold;" target="_blank" title="Click to know more about DEOXIDISER">DEOXIDISER</a><br/> <a href="https://interviewquestions.tuteehub.com/tag/confectionary-2537576" style="font-weight:bold;" target="_blank" title="Click to know more about CONFECTIONARY">CONFECTIONARY</a> <br/> <a href="https://interviewquestions.tuteehub.com/tag/indoor-1042472" style="font-weight:bold;" target="_blank" title="Click to know more about INDOOR">INDOOR</a> photography<br/> <a href="https://interviewquestions.tuteehub.com/tag/thermite-707015" style="font-weight:bold;" target="_blank" title="Click to know more about THERMITE">THERMITE</a> welding </p>Solution : During the thermite welding <a href="https://interviewquestions.tuteehub.com/tag/large-1066424" style="font-weight:bold;" target="_blank" title="Click to know more about LARGE">LARGE</a> heat liber ated</body></html> | |
| 48686. |
Al_(2)O_(3) can be converted to anhydrous AlCl_(3) by heating |
| Answer» <html><body><p>`Al_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)` with `Cl_(2)` gas<br/>`Al_(2)O_(3)` with HCl gas<br/>`Al_(2)O_(3)` with `<a href="https://interviewquestions.tuteehub.com/tag/nacl-572483" style="font-weight:bold;" target="_blank" title="Click to know more about NACL">NACL</a>` in solid state<br/>a mixture of `Al_(2)O_(3)` and carbon in dry `Cl_(2)` gas</p>Answer :D</body></html> | |
| 48687. |
Al_(2)O_(3) can be converted to anhydrous AlCl_(3) by heating : |
| Answer» <html><body><p>A mixture of `Al_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)` and <a href="https://interviewquestions.tuteehub.com/tag/carbon-16249" style="font-weight:bold;" target="_blank" title="Click to know more about CARBON">CARBON</a> in dry `Cl_(2)` gas <br/>`Al_(2)O_(3)` with HCl gas <br/>`Al_(2)O_(3)` with `Cl_(2)` gas <br/>`Al_(2)O_(3)` with NaCl in <a href="https://interviewquestions.tuteehub.com/tag/solid-1216587" style="font-weight:bold;" target="_blank" title="Click to know more about SOLID">SOLID</a> state </p>Solution :`Al_(2)O_(3)+C+Cl_(2)overset(<a href="https://interviewquestions.tuteehub.com/tag/delta-947703" style="font-weight:bold;" target="_blank" title="Click to know more about DELTA">DELTA</a>)rarr` anhydrous `AlCl_(3)`</body></html> | |
| 48688. |
Al_(2)O_(3)becomes anhydrousAlCl_(3) upon heating |
| Answer» <html><body><p>with `NaCl`<br/>with <a href="https://interviewquestions.tuteehub.com/tag/dry-960094" style="font-weight:bold;" target="_blank" title="Click to know more about DRY">DRY</a> `Cl_(2)` and C<br/>with `Cl_(2)`<br/>with dry `HCl` gas</p>Solution :`Al_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>) + 3Cl_(2) + <a href="https://interviewquestions.tuteehub.com/tag/3c-310590" style="font-weight:bold;" target="_blank" title="Click to know more about 3C">3C</a> overset("Heat")rarr2AlCl_(3) + 3 CO`.</body></html> | |
| 48689. |
Al_(2)(SO_(4))_(3)+NH_(4)OH rarr X,X is |
| Answer» <html><body><p> a white <a href="https://interviewquestions.tuteehub.com/tag/gelatinous-7381986" style="font-weight:bold;" target="_blank" title="Click to know more about GELATINOUS">GELATINOUS</a> precipate <br/>insolunle in excess of `NH_4OH`<br/><a href="https://interviewquestions.tuteehub.com/tag/soluble-3046305" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUBLE">SOLUBLE</a> in excess of NaOH<br/>amphotericin nature </p>Solution :`Al_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)(SO_4)_3+NH_(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)OH rarr (NH_4)_(2)SO_(4)+Al(OH)_3`<br/>X is Al `(OH_3)` which is a white gelatinous precipitate soluble in excess of NaOH and is amphoteric nature</body></html> | |
| 48690. |
Al reacts with conc. H_(2)SO_(4) and forms Uses of B & Al and their compounds |
| Answer» <html><body><p>`SO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`<br/>`SO_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)`<br/>`H_(2)`<br/>`S(<a href="https://interviewquestions.tuteehub.com/tag/vap-1442817" style="font-weight:bold;" target="_blank" title="Click to know more about VAP">VAP</a>)`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48691. |
Al is inert in nature , because …… |
| Answer» <html><body><p>It has <a href="https://interviewquestions.tuteehub.com/tag/high-479925" style="font-weight:bold;" target="_blank" title="Click to know more about HIGH">HIGH</a> electropositivity . <br/>It forms hard <a href="https://interviewquestions.tuteehub.com/tag/layer-1069875" style="font-weight:bold;" target="_blank" title="Click to know more about LAYER">LAYER</a> of `Al_2O_3` on the surface.<br/>Strong <a href="https://interviewquestions.tuteehub.com/tag/reducing-2981618" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCING">REDUCING</a> agent<br/>It forms <a href="https://interviewquestions.tuteehub.com/tag/alloy-857965" style="font-weight:bold;" target="_blank" title="Click to know more about ALLOY">ALLOY</a> with Cu. </p>Answer :B</body></html> | |
| 48692. |
Al having double conductivity as compared to which metal ? |
| Answer» <html><body><p></p>Solution :Al has <a href="https://interviewquestions.tuteehub.com/tag/double-441870" style="font-weight:bold;" target="_blank" title="Click to know more about DOUBLE">DOUBLE</a> <a href="https://interviewquestions.tuteehub.com/tag/conductivity-17908" style="font-weight:bold;" target="_blank" title="Click to know more about CONDUCTIVITY">CONDUCTIVITY</a> as compared to Cu.</body></html> | |
| 48693. |
Al and Ga have nearly the same covalent radius, incorrect reason is |
| Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/greater-476627" style="font-weight:bold;" target="_blank" title="Click to know more about GREATER">GREATER</a> shielding effect of s-electrons of <a href="https://interviewquestions.tuteehub.com/tag/ga-467684" style="font-weight:bold;" target="_blank" title="Click to know more about GA">GA</a> <a href="https://interviewquestions.tuteehub.com/tag/atoms-887421" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMS">ATOMS</a> <br/>Poor shielding effect of s-electrons of Ga atoms <br/> Poor shielding effect of d-electrons of Ga atoms<br/> Greater shileding effect of d-electrons of Ga atoms </p>Solution : Due to poor shielding effect of d electrons of Ga atoms</body></html> | |
| 48694. |
Al and Ga have nearly the same covalent radii, because of |
| Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/greater-476627" style="font-weight:bold;" target="_blank" title="Click to know more about GREATER">GREATER</a> shielding <a href="https://interviewquestions.tuteehub.com/tag/effect-966056" style="font-weight:bold;" target="_blank" title="Click to know more about EFFECT">EFFECT</a> of 's' electrons of 'Ga' <a href="https://interviewquestions.tuteehub.com/tag/atoms-887421" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMS">ATOMS</a><br/><a href="https://interviewquestions.tuteehub.com/tag/poor-602678" style="font-weight:bold;" target="_blank" title="Click to know more about POOR">POOR</a> shielding effect of 's' electrons of 'Ga' atoms <br/> Poor shielding effect of 'd' electrons of 'Ga' atoms <br/>Greater shielding effect of 'd' electrons of 'Ga' atoms</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html> | |
| 48695. |
aK_(2)Cr_(2)O_(7)+bKCl+cH_(2)SO_(4) to xCrO_(2)Cl_(2)+yKHSO_(4)+zH_(2)O The above equation balances when |
| Answer» <html><body><p>a=2,b=4,c=6 and x=2, y=6, z=3<br/>a=4,b=2,c=6 and x=6,y=2,z=3<br/>a=6,b=4,c=2 <a href="https://interviewquestions.tuteehub.com/tag/ad-361679" style="font-weight:bold;" target="_blank" title="Click to know more about AD">AD</a> x=6, y=3,z=2<br/>a=1,bb=4,c=6 and x=2, y=6, z=3</p>Answer :D</body></html> | |
| 48696. |
aK_(2)Cr_(2)O_(7)+bKCI+cH_(2)SO_(4)rarrxCrO_(2)CI_(2)+yKHSO_(4)+zH_()O The above equation balance when |
| Answer» <html><body><p>A=<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>,b=4,c=<a href="https://interviewquestions.tuteehub.com/tag/6-327005" style="font-weight:bold;" target="_blank" title="Click to know more about 6">6</a> and x=2 , y =6 , z=3<br/>a=4b=2c=6and x=6 y =2 z=3<br/>a=6b=4c=2 and x=6y=3z=2<br/>a=1b=4c=6 and x=2y=6z=3</p>Solution :<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_CHE_02_XI_C08_E18_040_S01.png" width="80%"/></body></html> | |
| 48697. |
Air pollution is not caused by |
| Answer» <html><body><p>Pollen <a href="https://interviewquestions.tuteehub.com/tag/grain-475942" style="font-weight:bold;" target="_blank" title="Click to know more about GRAIN">GRAIN</a> <br/>Hydroelectroc power <br/>Industries <br/>Automobiles </p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/air-852233" style="font-weight:bold;" target="_blank" title="Click to know more about AIR">AIR</a> <a href="https://interviewquestions.tuteehub.com/tag/pollutionn-2938529" style="font-weight:bold;" target="_blank" title="Click to know more about POLLUTIONN">POLLUTIONN</a> is not <a href="https://interviewquestions.tuteehub.com/tag/caused-7279664" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSED">CAUSED</a> by hyfdroelectroic power</body></html> | |
| 48698. |
Air pollutants that produce photochemical oxidants include: |
| Answer» <html><body><p>`CO_(2), <a href="https://interviewquestions.tuteehub.com/tag/co-920124" style="font-weight:bold;" target="_blank" title="Click to know more about CO">CO</a> and SO_(2)`<br/>`N_(2)O, NO and HNO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`<br/>`O_(2), l_(2)` and `HNO_(3)`<br/>`O_(3),Cl_(2)` and `SO_(2)`</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |
| 48699. |
Air pollutants that produce photochemical oxidants include |
| Answer» <html><body><p>`CO_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>) CO and SO_(2)`<br/><a href="https://interviewquestions.tuteehub.com/tag/nitrous-2196967" style="font-weight:bold;" target="_blank" title="Click to know more about NITROUS">NITROUS</a> oxide ,nitric oxide and nitric <a href="https://interviewquestions.tuteehub.com/tag/acid-847491" style="font-weight:bold;" target="_blank" title="Click to know more about ACID">ACID</a> <br/>Oxygen, chlorine nad nitric acid <br/>Ozone, chlorine and suphur dioxide.</p>Solution :Air pollutant that produce <a href="https://interviewquestions.tuteehub.com/tag/photochemical-2220928" style="font-weight:bold;" target="_blank" title="Click to know more about PHOTOCHEMICAL">PHOTOCHEMICAL</a> oxidatns <a href="https://interviewquestions.tuteehub.com/tag/include-11332" style="font-weight:bold;" target="_blank" title="Click to know more about INCLUDE">INCLUDE</a> nitrous oxide, nitric oxide andnitric acid</body></html> | |
| 48700. |
Air is cooled from 25^@C to 0^@C. Calculate the decrease in rms speed of the molecules. |
| Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :about <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>%</body></html> | |