94420 + Interview Questions in Chemistry in Class 12

1.	CH_(3)CHO overset("1) dil. NaOH")underset("2) "Delta)rarr X. Give the IUPAC name of X.
Answer» Solution :X is `CH_(3) - CH = CH - CHO` This reaction under goes aldol CONDENSATION. The given ethyl ALDEHYDE contains `alpha -` hydrogen atom will react with DIL `NaOH`. To form Aldol product then heating will form But-2-enal.

Discussion

2.	CH_(3)CHO + NH_(2)OH overset(-H_(2)O)rarrCH_(3)CH = NOH The reaction is carried at :
Answer» `pH = 1` `pH = 4.5` `pH = 12` Any pH. Solution :The REACTION OCCURS in WEAKLY acidic MEDIUM `(pH = 4-5)`.

Discussion

3.	CH_3CHO+NH_2 OHto X underset(-H_2 O) toY The numberofsigmabondspibonds and lone pairs of electrons in the compound 'Y' are respectively
Answer» 9,1,4 11,1, 5 9,2,2 8,1,3 Answer :D

Discussion

4.	CH_(3)CHO+HCNrarrX overset(H_(3)O^(+))rarr Which type of polymer is formed from the organic compound Y?
Answer» SOLUTION :X = acetaldehyde CYANOHYDRIN , Y = lactic acid. Hydrolysis of COMPOUND X, acetaldehyde cyanohydrin with a dilute mineral acid gives compound Y, lactic acid. The condensation homopolymer of lactic acid is called polylactic acid. It is a polyester and is a biodegradable polymer.

Discussion

5.	CH_(3)CHO+HCN to CH_(3)CH(OH)CN overset(H^(+) // H_(2)O)to CH_(3)CH(OH)COOH an asymmetric centre is generated. The acid obtained would be
Answer» D-isomer L-isomer 50% D + 50%L 20% D + 80% L. Solution :RACEMIC MIXTURE, i.e., 50% D+50% L.

Discussion

6.	CH_(3)CHO+HCHOoverset("dil. NaOH")underset("Heat")rarrAoverset("HCN)underset(H_(3)O^(+))rarrB the structure of compound B is
Answer» `CH= CH - UNDERSET(OH) underset(\|)CH- COOH` ` CH_(2) = CH- underset(CN) underset(\|)CH - OH` ` CH_(3)CH_(2) - underset(OH) underset(\|) CH - COOH` `CH_(3)- underset(OH) underset(\|)CH- COOH` Answer :A

Discussion

7.	CH_3CHO+H_2NOHrarrCH_3-CH=N-OH The above reaction occurs at:
Answer» pH=1 pH=4.5 Any VALUE of pH pH=12 Answer :B

Discussion

8.	CH_(3)CHO + H_(2)NOH to CH_(3) CH = N - OH . Thisreactionoccursat.
Answer» PH = 1 pH = 4.5 any VALUEOF pH pH = 12 Answer :B

Discussion

9.	CH_(3)CHO gives 1,1-Dichloroethane with it
Answer» `PCI_(5)` `S_(2)CI_(2)` `CI_(2)` `HCI` Solution : Each O ATOM of the CARBONYL group is replaced by `2CI` atom.

Discussion

10.	CH_(3)CHO+CH_(3)CHOoverset(OH^(-))(to)Aoverset("Heat")(to)B+H_(2)O The IUPAC names of compound A is ………..and B is ………….
Answer» Solution :`underset("Acetaldehyde ")(CH_(3)CHO)+CH_(3)CHO underset("Aldol condensation")OVERSET(OH^(-))(to)CH_(3)-underset(.A.)underset(3-"Hydroxybutanal")overset(OH)overset(\|)((CH))-CH_(2)-overset(O)overset(\|\|)(C)-Hoverset("Heat")(to)` `CH_(3)-underset(.B.) underset(2-"BUTENAL")(CH=CH)-overset(O)overset(\|\|)(C)-H+H_(2)O`

Discussion

11.	CH_3CHO + CH_2 (COOH)_2underset(/_\)overset(C_6H_5N)rarrThe product of this reaction is
Answer» `CH_3COOH` and `C_2H_5OH` `C_2H_5COOH` `CH_3CH=CHCOOH` `(COOH)CH=CH(COOH)` ANSWER :C

Discussion

12.	CH_3COCH_3 can be obtained by:
Answer» HEATING acetaldehyde with methanol Oxidation of PROPYL alcohol Oxidation of ISOPROPYL alcohol Reduction of propionic acid Answer :C

Discussion

13.	CH_(3)CHO and C_(6)H_(5)CH_(2)CHO can be distinguished chemically by
Answer» Benedict TEST Iodoform test Tollen reagent test Fehling SOLUTION test Solution :`CH_(3)-CHO = O` gives Iodoform test but `C_(6)H_(5)CH_(2)CH=O` does not give Iodoform test.

Discussion

14.	CH_(3)CHO and C_(6)H_(5)CHO can be distinguished chemically by
Answer» BAEYERS REAGENT Tollen's reagent Schiff's reagent `I_(2)+NAOH` ANSWER :D

Discussion

15.	CH_3CHO and C_6H_5CH_2CHO can be distinguised chemically by :
Answer» BENEDICT's TEST Iodofrom test Tollen's REAGENT test Fehling's SOLUTION test Answer :B

Discussion

16.	CH_(3)CHO + 2[H] overset(Ni : Delta)to B. A dibasic acid is formed when "B" reacts with
Answer» `SOCI_(2)` HCI `PCl_(3)` `PCl_(5)` Answer :C

Discussion

17.	CH_(3)CHClCH_(3)CH_(3)andCH_(3)CH_(2)CH_(2)Cl shows which type of isomerism,
Answer» functional chain position metamer Solution :In both COMPOUNDS, position of CHLORINE atom is DIFFERENT. Hence theyshow position isomerism.

Discussion

18.	CH_(3)CHI_(2)overset(KCN)tounderset(Delta)overset(H_(2)O, here the end product would be:
Answer» 2-cyanopropionic ACID ethane-1, 1-dicarboxy.li.c acid 2-methyl ETHANOIC acid propionic acid Answer :D

Discussion

19.	CH_(3)CHCl_(2) and CH_(2)ClCH_(2)Cl are examples of :
Answer» FUNCTIONAL ISOMERISM METAMERISM CHAIN isomerism POSITIONAL isomerism Answer :D

Discussion

20.	CH_3CH=CH_2overset(NaBD_4)underset(H_2O_2//OH)rarr product X X is:
Answer» `H_3C-UNDERSET(OH)underset(\|)CH-CH_2D` `H_3C-underset(D)underset(\|)CH-CH_2OH` `H_3C-underset(OD)underset(\|)CH-CH_3` None of the above Answer :B

Discussion

21.	CH_(3)CH=CH_(2)overset(NBS)rarr A overset(KCN)rarr B overset(OH^(-)//Delta)rarr C overset(P//Br_(2))rarr D overset(NH_(3))rarr E overset(Delta)rarr F
Answer» ANSWER :`(##RES_ORG_CHM_V02_XII_C04_E01_277_A01##)`

Discussion

22.	CH_(3)CH=CH_(2) underset("Peroxide")overset(HBr)rarr (A) overset(Mg)rarr(B) underset((2)H_(2)O //H^(+))overset((1)CO_(2))rarr(C),(C) is
Answer» `CH_(3)NH_(2)CH_(2)OH` `CH_(3)CH_(2)CH_(2)COOH` `CH_(3)CH_(2)CH_(2)CHO` `CH_(3)CH_(3)` SOLUTION :`(A)=CH_(3)CH_(2)CH_(2)Br`, n-Propyl BROMIDE `(B)=CH_(3)CH_(2)CH_(2)MgBr`, n-Propylmagnesium bromide `(C)=CH_(3)CH_(2)CH_(2)COOH`,BUTANOIC acid

Discussion

23.	CH_3CH=CH- COCH_3+CH_3 MgBrunderset(2 ) H_2 O) overset(" ether ") tothepossibleproducts are
Answer» `fCH_3 CH= CHoverset( OH)OVERSET(\| )C (CH_3)_2` `(CH_3)_2 CHCH_2 COCH_3` `(CH_3)_2 CH -CH=CH -COCH_3` `CH_3 CH= underset(CH_3)underset (\|) C - overset(O ) overset(\|\|) C-CH_3` Solution :`CH_3 - CH =CH - overset(O)overset(\|\|) C-CH_3 +CH_3 MgBrunderset(H_3 O^(+))overset("EITHER") toCH_3 -CH =CH - underset(CH_3) underset(\|) overset(OH) overset(\|) C-CH_3`

Discussion

24.	CH_(3)CH_(3)Brunderset(Delta)overset(aqNaOH)(to)Aunderset(Delta)overset(KMnO_(4)//H^(+))(to)Bunderset(Delta)overset(NH_(3))(to)D.D is ……………………….. .
Answer» BROMOMETHANE `alpha`- bromo sodium acetate methanamine acetamide Solution :`CH_(3)CH_(3)Broverset(aqNaOH)(to)CH_(3)CH_(2)-OHoverset(KMnO_(4))(to) CH_(3)-COOHunderset(DELTA)overset(NH_(3))(to)CH_(3)CONH_(2)overset(Br_(2)//NaOH)(to)CH_(3)-NH_(2)`

Discussion

25.	CH_3CH=CH-CH_3overset(X)rarrY (Not resolvable). Here X can be
Answer» `Br_2` WATER `H_2CO_3` `OsO_4//OH^-` COLD ALK. `KMnO_4` ANSWER :C::D

Discussion

26.	CH_(3)CH=CH-CH=CH-CH_(2)CHOHCH_(3) How many isomers (geometrical and optical) are possible for the above - mentioned compound?
Answer» 2 4 6 8 Answer :D

Discussion

27.	In the reaction, CH_3-CHunderset(Br)underset(\|)(CH)-(CH_3)overset("Alc. KOH")(rarr)(A) underset("peroxide")overset(HBr)(rarr)(B)underset("Acetone")overset(NaI)(rarr)(C). The compound (C ) is
Answer» SOLUTION :ISOPROPYL IODIDE

Discussion

28.	CH_(3)CH_(3)+HNO_(3) overset(675K)to ?
Answer» `CH_(3)CH_(2)NO_(2)` `CH_(3)CH_(2)NO_(2)` `2CH_(3)NO_(2)` `H_(2)C=CH_(2)` ANSWER :B

Discussion

29.	CH_(3)CH_(2)overset(O)overset(\|\|)(C)-OHrarrCH_(3)CH_(2)NG_(2) Which of the following is/are effective for this conversion?
Answer» `NH_(3) "(excess), heat", Na, C_(2)H_(5)OH` `N_(3)H` , cold conc . `H_(2)SO_(4)` `NH_(3)` (excess) heat , `NaOH,Br_(2)` `SOCI_(2),NH_(3)` Solution :(a) gives corresponding amine `CH_(3)CH_(2)CH_(2) - NH_(2)` (b) Schmidt reaction (c) Hofmann.s bromamide DEGRADATION. (d) Gives CH3CH2CONH2

Discussion

30.	CH_(3)CH_(2)OHoverset(K_(2)Cr_(3)O_(7)//H^(+))tounderset(__")('X')+H_(2)O 'X' is ______
Answer» `CH_(3)CHO` `CH_(3)COCH_(3)` `CH_(3)COOCH_(3)` `CH_(3)CN` ANSWER :A

Discussion

31.	CH_(3)CH_(2)Ohoverset(CI_(2))underset(step-1)to CH_(3)CHOoverset(3GI_(2))underset(step-2)toCI_(3)C CHO In above reactions the role of CI_(2) in step-1 and step-2 respectively is
Answer» OXIDATION, chlorination Reduction, chlorination Oxidation, addition Reduction, substitution Answer :A

Discussion

32.	CH_(3)CH_(2)OH underset(443K)overset("Excess conc." H_(2)SO_(4))to X What is X?
Answer» ETHENE Ethane Dimethyl ether Butene Solution :Ethene

Discussion

33.	CH_3CH_2OH overset(P+I_1)(to) A overset(Mg)(to) B overset(HCHO)(to) C overset(H_2O)(to) D. The compound D is
Answer» propanal butanal n-butyl alcohol n-propyl alcohol Answer :D

Discussion

34.	CH_(3)CH_(2)OH underset(O)to CH_(3)CHO underset(O) to CH_(3)COOH To stop the oxidation reactions at the aldehyde stage, ______ is used as an oxidising agent.
Answer» `KMnO_(4) \| H^(+)` `K_(2)Cr_(2)O_(7) \| H^(+)` PYRIDINIUM chloro chromate both (a) and (b) are correct Answer :C

Discussion

35.	CH_(3)CH_(2)OH+HCl overset(ZnCl_(2))rarr CH_(3)CH_(2)Cl+H_(2)O In the above reaction, the leaving group is
Answer» `OH^(-)` `H_(2)O` `HO-overset(-)ZnCl_(2)` `H_(3)O^(+)` SOLUTION :ZINC chloride is a Lewis acid and coordinates with the alcoholic group.

Discussion

36.	CH_(3)CH_(2)OH+CH_(2)N_(2)overset(HBF_(4))rarr Products Which of the following statements is true about th eabove reaction ? i. The products is CH_(3)CH_(2)OCH_(3). ii. The strong acid HBF_(4) first protonates CH_(2)N_(2) to give CH_(2)N_(2)^(o+), form wich N_(2) (an extremely good leaving group) is displaced. iii.CH_(3)CH_(2)OH acts as a nucleophile. iv. CH_(2)N_(2) acts as a nucleophile.
Answer» i. and II. i, ii, and iii i, ii, and iv All Solution :NA

Discussion

37.	CH_(3)CH_(2)OH +CH_(3)COOH overset(H^(+))hArrX+ H_(2)O What is X?
Answer» Ethyl ethanoate METHYL ethanoate Ethyl propanoate Ethyl methanoate Solution :`CH_(3)CH_(2)OH +CH_(3)COOH overset(H^(+))hArrCH_(3)COOCH_(2)CH_(3)+ H_(2)O`

Discussion

38.	CH_(3)CH_(2)OH can be converted into CH_(3)CHO by __________.
Answer» CATALYTIC hydrogenation TREATMENT with `LiAlH_(4)` treatment with pyridinium chlorochromate treatment with `KMnO_(4)` Answer :C

Discussion

39.	CH_(3)CH_(2)OH can be converted into CH_(3)CHO by _____.
Answer» CATALYTIC hydrogenation treatment with `LiAlH_(4)` Treatment with pyridinium chlorochromate treatment with `KMnO_(4)` ANSWER :C

Discussion

40.	CH_(3)CH_(2)OH can be converted into CH_(3)CHO by ______
Answer» Catalystic HYDROGENATION TREATMENT with `LiAlH_(4)` treatment with PYRIDINIUM chlorochromate treatment with `KMnO_(4)` Answer :C

Discussion

41.	CH_(3)CH_(2)OH and CH_(3)-O-CH_(3) are the example of:
Answer» FUNCTIONAL ISOMERISM chain isomerism metamerism POSITION isomerism. ANSWER :A

Discussion

42.	CH_(3)CH_(2)OH can be converted into CH_(3)CHO by ...
Answer» CATALYTIC HYDROGENATION TREATMENT with `LiAIH_(4)` Treatment with PYRIDINIUM chlorochromate Treatment with `KMnO_(4)` Solution :Treatment with pyridinium chlorochromate

Discussion

43.	CH_(3)CH_(2)OH + 2HI underset(Delta)overset("Red P")to X+ I_(2)+ H_(2)O What is X?
Answer» Methane Ethane Ethene Butane Solution :`CH_(3)CH_(2)OH +2HI UNDERSET(DELTA)OVERSET("RED P")to CH_(3)-CH_(3)+ I_(2)+ H_(2)O`

Discussion

44.	CH_(3)CH_(2)NO_(2) underset(at 0^(@)C)overset(NaNO_(2)+HBr)(rarr) (A). (A) is
Answer» a.`CH_(3)CH_(2)OH` b.`CH_(3)CH_(2)OH` c.`CH_(3)underset(NO_(2))underset(\|)(C )=N.OH` d.`No reaction` Solution :The `1^(@) (RNO_(2))` GROUP REACTS with `HNO_(2) (NaNO_(2) + HBr rarr HNO_(2)+NaBr)` to give nitrolic acid, which gives BLOOD red colour with `NaOH`. So the answer is `(c )`.

Discussion

45.	CH_(3)CH_(2)NH_(2) is soluble in
Answer» Dilute HCI `CuSo_(4)` solution `AgNO_(3)` dil. `H_(2)SO_(4)` Solution :Base soluble in SALT and acid

Discussion

46.	CH_3CH_2NH_2 contains a basic NH_2 group , but CH_3CONH_2 does not , because :
Answer» Acctamide is amphoteric in character In `CH_3 CH_2NH_2` the electron PAIR on N-atom is delocalised by resonance In `CH_3 CH_2 NH_2` there is no resonance , while in ACETAMIDE the lone pair of electrons on N atom is delocalised and THEREFORE less available for PROTONATION None Answer :C

Discussion

47.	CH_(3)CH_(2)MgBr underset(H_(2)O)overset(CH_(3)CHO)rarr X overset(HBr)rarr Y. Write the product obtained when compound Y is subjected to dehydrohalogenation
Answer» SOLUTION :`CH_(3)-CH=CH-CH_(3)`

Discussion

48.	CH_(3)CH_(2)NH_(2) is soluble in :-
Answer» DILUTE HCl `CuSO_(4)` SOLUTION `AgNO_(3)` NONE of these ANSWER :A::B::C

Discussion

49.	CH_(3)CH_(2)COOHunderset(redP)overset(Cl_(2))toAoverset(alc KOH)to B,Bis
Answer» `CH_(3)CH_(2)COCL` `CH_(3)CH_(2)CHO` `CH_(2)=CHCOOH` `ClCH_(2)CH_(2)COOH`. Solution :`CH_(3)CH_(2)COOHunderset(HVZ "REACTION")OVERSET(Cl_(2),red P)toCH_(3)-underset(Cl)underset(\|)(CH)-COOHoverset(alc,KOH)toCH_(2)=CH-COOH`

Discussion

50.	CH_3CH_2COOHoverset(Cl_2)(Fe)rarr X overset(alc)(KOH)rarr YThecompound Y Is :
Answer» `CH_3CH_2OH` `CH_3CH_2CN` `CH_2=CHCOOH` `CH_2CHClCOOH` ANSWER :C

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

CH_(3)CHO overset("1) dil. NaOH")underset("2) "Delta)rarr X. Give the IUPAC name of X.

CH_(3)CHO + NH_(2)OH overset(-H_(2)O)rarrCH_(3)CH = NOH The reaction is carried at :

CH_3CHO+NH_2 OHto X underset(-H_2 O) toY The numberofsigmabondspibonds and lone pairs of electrons in the compound 'Y' are respectively

CH_(3)CHO+HCNrarrX overset(H_(3)O^(+))rarr Which type of polymer is formed from the organic compound Y?

CH_(3)CHO+HCN to CH_(3)CH(OH)CN overset(H^(+) // H_(2)O)to CH_(3)CH(OH)COOH an asymmetric centre is generated. The acid obtained would be

CH_(3)CHO+HCHOoverset("dil. NaOH")underset("Heat")rarrAoverset("HCN)underset(H_(3)O^(+))rarrB the structure of compound B is

CH_3CHO+H_2NOHrarrCH_3-CH=N-OH The above reaction occurs at:

CH_(3)CHO + H_(2)NOH to CH_(3) CH = N - OH . Thisreactionoccursat.

CH_(3)CHO gives 1,1-Dichloroethane with it

CH_(3)CHO+CH_(3)CHOoverset(OH^(-))(to)Aoverset("Heat")(to)B+H_(2)O The IUPAC names of compound A is ………..and B is ………….

CH_3CHO + CH_2 (COOH)_2underset(/_\)overset(C_6H_5N)rarrThe product of this reaction is

CH_3COCH_3 can be obtained by:

CH_(3)CHO and C_(6)H_(5)CH_(2)CHO can be distinguished chemically by

CH_(3)CHO and C_(6)H_(5)CHO can be distinguished chemically by

CH_3CHO and C_6H_5CH_2CHO can be distinguised chemically by :

CH_(3)CHO + 2[H] overset(Ni : Delta)to B. A dibasic acid is formed when "B" reacts with

CH_(3)CHClCH_(3)CH_(3)andCH_(3)CH_(2)CH_(2)Cl shows which type of isomerism,

CH_(3)CHI_(2)overset(KCN)tounderset(Delta)overset(H_(2)O, here the end product would be:

CH_(3)CHCl_(2) and CH_(2)ClCH_(2)Cl are examples of :

CH_3CH=CH_2overset(NaBD_4)underset(H_2O_2//OH)rarr product X X is:

CH_(3)CH=CH_(2)overset(NBS)rarr A overset(KCN)rarr B overset(OH^(-)//Delta)rarr C overset(P//Br_(2))rarr D overset(NH_(3))rarr E overset(Delta)rarr F

CH_(3)CH=CH_(2) underset("Peroxide")overset(HBr)rarr (A) overset(Mg)rarr(B) underset((2)H_(2)O //H^(+))overset((1)CO_(2))rarr(C),(C) is

CH_3CH=CH- COCH_3+CH_3 MgBrunderset(2 ) H_2 O) overset(" ether ") tothepossibleproducts are

CH_(3)CH_(3)Brunderset(Delta)overset(aqNaOH)(to)Aunderset(Delta)overset(KMnO_(4)//H^(+))(to)Bunderset(Delta)overset(NH_(3))(to)D.D is ……………………….. .

CH_3CH=CH-CH_3overset(X)rarrY (Not resolvable). Here X can be

CH_(3)CH=CH-CH=CH-CH_(2)CHOHCH_(3) How many isomers (geometrical and optical) are possible for the above - mentioned compound?

In the reaction, CH_3-CHunderset(Br)underset(|)(CH)-(CH_3)overset("Alc. KOH")(rarr)(A) underset("peroxide")overset(HBr)(rarr)(B)underset("Acetone")overset(NaI)(rarr)(C). The compound (C ) is

CH_(3)CH_(3)+HNO_(3) overset(675K)to ?

CH_(3)CH_(2)overset(O)overset(||)(C)-OHrarrCH_(3)CH_(2)NG_(2) Which of the following is/are effective for this conversion?

CH_(3)CH_(2)OHoverset(K_(2)Cr_(3)O_(7)//H^(+))tounderset(__")('X')+H_(2)O 'X' is ______

CH_(3)CH_(2)Ohoverset(CI_(2))underset(step-1)to CH_(3)CHOoverset(3GI_(2))underset(step-2)toCI_(3)C CHO In above reactions the role of CI_(2) in step-1 and step-2 respectively is

CH_(3)CH_(2)OH underset(443K)overset("Excess conc." H_(2)SO_(4))to X What is X?

CH_3CH_2OH overset(P+I_1)(to) A overset(Mg)(to) B overset(HCHO)(to) C overset(H_2O)(to) D. The compound D is

CH_(3)CH_(2)OH underset(O)to CH_(3)CHO underset(O) to CH_(3)COOH To stop the oxidation reactions at the aldehyde stage, ______ is used as an oxidising agent.

CH_(3)CH_(2)OH+HCl overset(ZnCl_(2))rarr CH_(3)CH_(2)Cl+H_(2)O In the above reaction, the leaving group is

CH_(3)CH_(2)OH +CH_(3)COOH overset(H^(+))hArrX+ H_(2)O What is X?

CH_(3)CH_(2)OH can be converted into CH_(3)CHO by __________.

CH_(3)CH_(2)OH can be converted into CH_(3)CHO by _____.

CH_(3)CH_(2)OH can be converted into CH_(3)CHO by ______

CH_(3)CH_(2)OH and CH_(3)-O-CH_(3) are the example of:

CH_(3)CH_(2)OH can be converted into CH_(3)CHO by ...

CH_(3)CH_(2)OH + 2HI underset(Delta)overset("Red P")to X+ I_(2)+ H_(2)O What is X?

CH_(3)CH_(2)NO_(2) underset(at 0^(@)C)overset(NaNO_(2)+HBr)(rarr) (A). (A) is

CH_(3)CH_(2)NH_(2) is soluble in

CH_3CH_2NH_2 contains a basic NH_2 group , but CH_3CONH_2 does not , because :

CH_(3)CH_(2)MgBr underset(H_(2)O)overset(CH_(3)CHO)rarr X overset(HBr)rarr Y. Write the product obtained when compound Y is subjected to dehydrohalogenation

CH_(3)CH_(2)NH_(2) is soluble in :-

CH_(3)CH_(2)COOHunderset(redP)overset(Cl_(2))toAoverset(alc KOH)to B,Bis

CH_3CH_2COOHoverset(Cl_2)(Fe)rarr X overset(alc)(KOH)rarr YThecompound Y Is :