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InterviewSolution
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.
| 401. |
A device that convers energy of combustion of fueles like hydrogen and methane, directly into electrical energy is known as .A. Electrolytic cellB. DynamoC. Ni-Cd cellD. Fuel cell |
| Answer» Correct Answer - D | |
| 402. |
In the reaction `X(g)+Y(g)hArr2Z(g),2` mole of X,1 mole of Y and 1 mole of Z are placed in a 10 litre vessel and allowed to reach equilibrium .If final concentration of Z is 0.2 M , then `K_(c)`for the given reaction is :A. 1.6B. `80//3`C. `16//3`D. None of these |
| Answer» Correct Answer - C | |
| 403. |
Consider the following reaction :- (a) `H_(aq)^(+)+CI_(aq)^(-)toHCI_(l),DeltaH=-X_(1) KJmol^(-1)` (b) `H_2(g)^(+)+CI_2(g)to2HCI_(l),DeltaH=-X_(2) KJmol^(-1)` ( c) `(1)/(2)H_(2(g))+(1)/(2)CI_(2(g))toHCI_(l),DeltaH=-X_(3) KJmol^(-1)` (d) `H_((g))+CI_((g))toHCI_(l),DeltaH=-X_(4) KJmol^(-1)` Enthalpy of formation of `HCI_(l)` is :-A. `-X_(1)Kjmol^(-1)`B. `-X_(2)Kjmol^(-1)`C. `-X_(3)Kjmol^(-1)`D. `-X_(4)Kjmol^(-1)` |
| Answer» Correct Answer - C | |
| 404. |
One mole of` X_(2)`is mixxed with one mole of `Y_(2)` in a flask of valume 1 litre . If at equilibrium 0.5 mole of `Y_(2)` are obtained. Then find out `K_(P)` for reaction `X_(2(g))+Y_(2(g))hArr2XY_(g)`A. 12B. 9C. 4D. 36 |
| Answer» Correct Answer - C | |
| 405. |
Match items of Column I with the items of Column II and assign the correct code: `{:(ColumnI,ColumnII),((A)"Cyanide process",(1)"Ultrapure Ge"),((B)"Froth Floatation Process",(2)"Dressing of"ZnS),((C)"Electrolytic reduction",(3)"Extraction of Al"),((D)"Zone refining",(4)"Extraction of Au"),(,(5)"Purification of Ni"):}`A. `{:(a,b,c,d,),(R,P,S,Q,):}`B. `{:(a,b,c,d,),(S,Q,R,P,):}`C. `{:(a,b,c,d,),(S,Q,R,P,):}`D. `{:(a,b,c,d,),(S,P,R,Q,):}` |
| Answer» Correct Answer - B | |
| 406. |
Consider the following chemical reaction `Z+3LiAlH_(4)toX+3LiF+3AlF_(3)` `X+H_(2)OtoY+6H_(2)` `3X+O_(2)overset(Delta)toB_(2)O_(3)+3H_(2)O` X,Y,Z are respectivelyA. `B,BF_(3),h_(3)bo_(3)`B. `B_(2)H_(6),BF_(3),h_(3)BO_(3)`C. `B_(2)H_(6),H_(3)BO_(3),BF_(3)`D. `Na_(2)B_(4)O_(7),B_(2)H_(6)` |
| Answer» Correct Answer - C | |
| 407. |
How many aldol product will be obtained in the following reaction `CH_(3)CHO+PhCHOoverset(NaOH)(to)`A. 2B. 3C. 4D. 1 |
| Answer» Correct Answer - A | |
| 408. |
What is reletion between following compounds `CH_(3)-CH_(2)-underset(CN)underset(|)(CH)-CH_(2)-CHO & CH_(3)-underset(CN)underset(|)(CH)-CH_(2)-CH_(2)-CHO`A. positional isomersB. chain isomersC. optical isomersD. metamers |
| Answer» Correct Answer - B | |
| 409. |
`CH_(3)CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-O-CH_(2)CH_(3)+CH_(3)+HIto `?A. `CH_(3)CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)OH+CH_(3)CH_(2)l`B. `CH_(3)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)l+CH_(3)CH_(2)OH`C. `CH_(3)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)l+CH_(3)-l`D. `CH_(3)-CH_(2)-OH` only |
| Answer» Correct Answer - A | |
| 410. |
Number of stereoisomers of the given compound is `CH_(3)-CH=CH-underset(OH)underset(|)(CH)-CH_(3)`A. 2B. 3C. 4D. 6 |
| Answer» Correct Answer - C | |
| 411. |
`Ph-CH=CH=Ph underset(CCI_(4))overset(CI_(2))rarr X overset(2NaNH_(2))rarrYoverset(H_(2),Pd-CaCO_(3))rarrZ` Identify product (Z) of the reaction.A. B. C. `Ph-underset(Ph)underset(|)(C)=CH_(2)`D. `Ph-C-=C-Ph` |
| Answer» Correct Answer - B | |
| 412. |
Which relation is incorrect :-A. `DeltaG=-TDeltaS_(T)`B. `DeltaG^(@)=-2.303RTlogK`C. `DeltaH=DeltaU+Delta_(g)RT`D. `w_("useful")=DeltaH` |
| Answer» Correct Answer - D | |
| 413. |
Which of the following is correct for a spontaneous process?A. `DeltaHltO,DeltaSgtO`B. `DeltaGgt0`C. `DeltaGS^(@)gt0`D. `E_(cell)lt0` |
| Answer» Correct Answer - A | |
| 414. |
For a spontaneous process :-A. `DeltaG=0`B. `DeltaltG`C. `DeltaGlt0`D. Any of the above |
| Answer» Correct Answer - B | |
| 415. |
Match the column :- `{:(,"Sign of" DeltaH&Delta"respectively",,"Nature of reaction",),(,-&-,P,"Spontaneous only at low temperture",),(,-&+,Q,"Spontaneous only at high temperature",),(,+&+,R,Spontaneous at all temperature,),(,+&-,S,"non spontaneous at all temperature",):}`A. `AtoP,BtoR,CtoQ,DtoS`B. `AtoR,BtoP,CtoP,DtoS`C. `AtoQ,BtoR,CtoP,DtoS`D. `AtoP,BtoQ,CtoR,DtoS` |
| Answer» Correct Answer - A | |
| 416. |
Which is not correct statement for classical smog?A. It occurs in cool, humid climateB. It is composed of smoke, fog and `SO_(2)`C. It is reducing in natureD. It is oxidising in nature |
| Answer» Correct Answer - D | |
| 417. |
Which of the following statements about photochmical smog is wrong ?A. Photochemical smog is formed through photochmical reaction involving solar energyB. Plantation of same plants like pinus helps in controlling photochemical smogC. Photochmecal smog has high concentration of oxidising agentD. Photochemical smog does not cause irritation to throat eyes |
| Answer» Correct Answer - D | |
| 418. |
Which of the following is correct for free expansion of ideal gas under isothermal condition :-A. `q=0,DeltaTlt0,wlt0`B. `q=0,DeltaT=0,w=0`C. `q!=0,DeltaT=0,w=0`D. `q!=0,DeltaT=0,w!=0` |
| Answer» Correct Answer - B | |
| 419. |
Which of the following statement is wrong ?A. Ozone can oxidise sulphur dioxide present in the atmosphere to sulphur trioxideB. Chloro fluoro carbon are suppose to main cause of ozone layer depletionC. Ozone is product in supper stratosphere by action of UV raysD. Ozone is not responsible for green house effect |
| Answer» Correct Answer - D | |
| 420. |
Which of the following condition show polluted environment ?A. EutrophicationB. BOD is 4 ppmC. pH of rain water is 5.6D. Amount of `CO_(2)` in the atmosphere is 0.03% |
| Answer» Correct Answer - A | |
| 421. |
The condecquence of global warming may be :A. Increase in average temperature of earthB. Melting of himalyan glaciersC. Increased BODD. Both (1) and (2) |
| Answer» Correct Answer - D | |
| 422. |
If BOD value of water is 20 ppm then what can we conclude regarding water ?A. Polluted waterB. Less polluted waterC. Pure waterD. Highly polluted water |
| Answer» Correct Answer - D | |
| 423. |
Which of the following is not a green house gas ?A. `CH_(4)`B. `O_(3)`C. COD. `H_(2)O` vapour |
| Answer» Correct Answer - C | |
| 424. |
The prescibed upper limit concentration of lead in drinking water is about :A. 30 ppbB. 70 ppbC. 50 ppbD. 90 ppb |
| Answer» Correct Answer - C | |
| 425. |
The pH of acid rain water is :A. More than 5.6B. In between 6 to 7C. Less than 5.6D. In between 6.5 |
| Answer» Correct Answer - C | |
| 426. |
BOD value less than 5 ppm indicates as water sample to be :A. rich in dissolved oxygenB. poor in dissolved oxygenC. highly pollutedD. not suitable for aquatic life |
| Answer» Correct Answer - A | |
| 427. |
Acid rain is due to increase in atomosphric concentration of :A. Ozone and dustB. `CO_(2)` and COC. `SO_(3)` and COD. `SO_(2)` and `NO_(2)` |
| Answer» Correct Answer - D | |
| 428. |
Stratosphere contains :A. `N_(2)`B. `O_(2)`C. `O_(3)`D. All of these |
| Answer» Correct Answer - D | |
| 429. |
The region of atomsphere where human being live ?A. TroposphereB. StratosphereC. BiosphereD. Exosphere |
| Answer» Correct Answer - A | |
| 430. |
On addition of small amount of `KMnO_(4)` to concentrated `H_(2)SO_(4)`, a green oily compound is obtained which is highly explosive in nature the compound isA. `Mn_(2)O_(7)`B. `MnO_(2)`C. `MnSO_(4)`D. `Mn_(2)O_(3)` |
| Answer» Correct Answer - A | |
| 431. |
Which statement is correctA. Most common oxidation state of lanthanoid is `+2`B. HCl can be used to acidify `KMnO_(4)` during redox reactionC. In presence of `CO_(2)`, orange dichromate solution changes to yellow chromateD. To separate `Fe_(2)O_(3)` and `Al_(2)O_(3)`, NaOH can used |
| Answer» Correct Answer - D | |
| 432. |
The yellow colour solution of `Na_(2)CrO_(4)` changes to orange red on passing `CO_(2)` gas due to the formation of :-A. `CrO_(5)`B. `CrO_(3)`C. `Na_(2)Cr_(2)O_(7)`D. `Cr_(2)O_(3)` |
| Answer» Correct Answer - C | |
| 433. |
Gold numbers of protective colloids `A,B,C` and `D` are `0.5,0.01,0.10` and `0.005` respectivaly. The correct order of their protective power isA. `AltCltBltD`B. `DltAltCltB`C. `CltBltDltA`D. `BltDltAltC` |
| Answer» Correct Answer - A | |
| 434. |
Which among the following are peroxo acid of sulphur ?A. `H_(2)SO_(5)` and `H_(2)S_(2)O_(8)`B. `H_(2)SO_(5)` and `H_(2)S_(2)O_(7)`C. `H_(2)S_(2)O_(7)` and `H_(2)S_(2)O_(8)`D. `H_(2)S_(2)O_(6)` and `H_(2)S_(2)O_(7)` |
| Answer» Correct Answer - A | |
| 435. |
Correct statement for Bakelite is : (a) It is formed by phenol and foraldehyde (b) It is crosslinked polymer (c ) It is thermoseting plastic (d) It is natural polymerA. a,dB. a,b,cC. a,b,dD. c,d |
| Answer» Correct Answer - B | |
| 436. |
Which of the following does not have optical isomer?A. `[Co(en)_(3)]Cl_(3)`B. `[Co(NH_(3))_(3)Cl_(3)]`C. `[Co(en)_(2)Cl_(2)]Cl`D. `[Co(en)(NH_(3))_(2)]Cl` |
| Answer» Correct Answer - B | |
| 437. |
Which of the following species can act as reducing agent ?A. `[Co(CO)_(4)]^(-)`B. `Mn(CO)_(6)`C. `Mn(CO)_(5)`D. `Cr(CO)_(6)` |
| Answer» Correct Answer - B | |
| 438. |
The geometry of `Ni(CO_(4))` and `Ni(PPh_(3))_(2)Cl_(2)` areA. both are square planarB. tetrahedral and square planarC. both tetrahedralD. square planar and tetrahedral |
| Answer» Correct Answer - C | |
| 439. |
Which of the following will give a pair of enantiomorphs? .A. `[Cr(NH_(3))_(6)][Co(CN)_(6)]`B. `[Co(en)_(2)Cl_(2)]Cl`C. `[Pt(NH_(3))_(4)][PtCl_(6)]`D. `[Co(NH_(3))_(4)Cl_(2)]NO_(2)` |
| Answer» Correct Answer - B | |
| 440. |
Indicate the complex ion which shows geometrical isomerism.A. `[Cr(H_(2)O)_(4)Cl_(2)]^(+)`B. `[Pt(NH_(3))_(3)Cl]^(+)`C. `[Co(NH_(3))_(6)]^(3+)`D. `[Co(CN)_(5)(NC)]^(3-)` |
| Answer» Correct Answer - A | |
| 441. |
Geometrical isomerism can be shown byA. `[Ag(CN)(NH_(3))]`B. `Na_(2)[Cd(NO_(2))_(4)]`C. `[PtCl_(4)I_(2)]^(-2)`D. `[PtCl(NH_(3))_(3)][Au(CN)_(4)]` |
| Answer» Correct Answer - C | |
| 442. |
Which of these will exhibit geometrical isomerism ? A. IB. IIC. IIID. All of these |
| Answer» Correct Answer - B | |
| 443. |
Which reaction (s) occurs during calcination (a) `CaCO_(3)toCaO+CO_(2)` (b) `2FeS_(2)+(11)/(2)O_(2)toFe_(2)O_(3)+4SO_(2)` (c ) `Al_(2)O_(3).xH_(2)OtoAl_(2)O_(3)+H_(2)O` (d) `ZnS+(3)/(2)O_(2)toZnO+SO_(2)` correct option areA. a and bB. b and cC. a and cD. b and d |
| Answer» Correct Answer - C | |
| 444. |
Electronic configurations related to Praseodymium, Neodymium & Promethium are respectively -A. `4f^(3)6s^(2),4f^(4)6s^(2)&4f^(6)6s^(2)`B. `4f^(7)6s^(2),4f^(13)6s^(2)&4f^(6)6s^(2)`C. `4f^(3)6s^(2),4f^(4)6s^(2)&4f^(5)6s^(2)`D. `4f^(14)5d^(1)6s^(2),4f^(14)6s^(2)&4f^(6)6s^(2)` |
| Answer» Correct Answer - C | |
| 445. |
Among the following the one that gives pistive idoform test upon reaction with `I_(2)` and `NaOH` is:A. `CH_(3)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)`B. `C_(6)H_(5)-CH_(2)-CH_(2)-OH`C. `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)OH`D. `PhCHOHCH_(3)` |
| Answer» Correct Answer - D | |
| 446. |
Beryl is type ofA. chain silicateB. cyclic silicateC. sheet silicateD. 3-D silicate |
| Answer» Correct Answer - B | |
| 447. |
When electrolysis of silver nitrate solution is carried out using silver electrodes, wich of the following reaction occurs at the anode?A. `Ag toAg^(+)+e^(-)`B. `Ag^(+)+e^(-)toAg`C. `2H_(2)Oto4H^(+)+O_(2)+4e^(-)`D. `4OH^(-)to2H_(2)+O_(2)+4e^(-)` |
| Answer» Correct Answer - A | |
| 448. |
The correct formula of diammine dichlorodicyano chromate (III) is :-A. `[CrCl_(2)(CN)_(2)(NH_(3))_(2)]^(3+)`B. `[CrCl_(2)(CN)_(2)(NH_(3))_(2)]^(3-)`C. `[CrCl_(2)(CN)_(2)(NH_(3))_(2)]`D. `[CrCl_(2)(CN)_(2)(NH_(3))_(2)]^(-)` |
| Answer» Correct Answer - D | |
| 449. |
`CI_(2)O_(6)` is a mixed anhydride of `HCIO_(3)` and `HCIO_(4)`.A. `HClO_(3)`B. `HClO_(2)`C. `HClO_(4)`D. Mixed anhydride of `HClO_(3)` & `HClO_(4)` |
| Answer» Correct Answer - D | |
| 450. |
In which of the following oxy acid of sulphur sulphur atoms has different oxidation statesA. `H_(2)S_(4)O_(6)`B. `H_(2)S_(2)O_(8)`C. `H_(2)S_(2)O_(4)`D. All |
| Answer» Correct Answer - A | |