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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.
| 27551. |
The mixture whose composition and properties are uniform through is called. |
| Answer» SOLUTION :HOMOGENEOUS | |
| 27552. |
The non-metal other than graphite having metallic lustre is |
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Answer» `I_2` |
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| 27553. |
The non-existent metal carbonyl among the following is |
| Answer» Answer :B | |
| 27554. |
The mixture of o-nitrophenol and p-nitrophenol can be best seprated by |
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Answer» Crystallisation |
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| 27555. |
The mixture of MgCl_(2)andMgO is called |
|
Answer» SORREL's cement |
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| 27557. |
The mixture of noble gases is separated by: |
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Answer» Ramsay-Rayleigh.s FIRST method |
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| 27558. |
The non - existence of PbI_(4) is because of : |
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Answer» highly OXIDISING NATURE of `Pb^(4+)` |
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| 27559. |
The non-essential amino acid among the following is .......................... |
| Answer» SOLUTION :Alanine | |
| 27560. |
The mixture of ethanol and water cannot be separated by distillation because |
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Answer» They FOMR a constant BOILING mixture |
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| 27561. |
The mixture of ethanol and H_2SO_4 is distilled in distillation flask at 140^@C. The flask would then contain |
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Answer» `H_2SO_4` and `C_2H_5-O-C_2H_5` only |
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| 27562. |
The noble metals which dissolves in aqua regia were |
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Answer» Au |
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| 27563. |
The mixture of concentrated HCl and HNO_3 made in 3:1 ratio contains |
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Answer» `ClO_(2)` |
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| 27564. |
The noble gas(s) which does not /do not form any clathrates is/are |
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Answer» He |
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| 27565. |
The noble gases which form clathrates are |
|
Answer» He |
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| 27566. |
The mixture of compounds A and B is passed through a column of Al_(2)O_(3) by using alcohol as eluent. Compound A is eluted in preference to compound B. Which of the two compounds A or B is more readily adsorbed on the column? |
| Answer» SOLUTION :SINCE COMPOUND A comes out before compound B, the compound B is more readily adsorbed. | |
| 27567. |
The noble gases have closed- shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation number +2,+4 and +6. XeF_(4) reacts violently with water to give XeO_(3). The compound of xenon exhibit rich sterochemistry and their geometries can be deduced considring the total number of electron pairs in the valence shell. Argon is used in arc welding because of its: |
|
Answer» low reactivity with metal |
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| 27568. |
The mixture of compounds formed when glucose undergoes reversible isomerisation with sodium hydroxide solution |
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Answer» D - GLUCOSE D- MANNOSE and D-fructose |
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| 27569. |
The noble gases have closed -shell electronic configuration and are monoatomic gases under normal conditions. The low bp of the ligher noble bp of the lighternoble gases are due to weak dispersion force between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers+2,+4and +6 . XeF_(4) reacts violently with water to give XeO_(3). the compound of xenone exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell. XeF_(4) and XeF_(6) are expected to be |
|
Answer» Oxidizing |
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| 27570. |
The mixture of compounds A and B is passed through a column of Al_2O_3 by using alcohol as eluant. Compound A is eluted in preference to compound B. Which of the compounds A or B. is more readily adsorbed on the column ? |
| Answer» SOLUTION :The COMPOUND B is adsorbed more READILY in the COLUMN as compound A is preferentially eluted out. | |
| 27571. |
The noble gases have close shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other inter atomic interactions. The direct reactions of xenon with fluorine leads to a series of compounds with oxidation number +2, +4" and" +6. XeF_(4) reacts violently with water to giveXeO_(3). The compounds of xenon exhibit stereochemistry and their geometries can be deduced considering the total number of electrons in valence shell XeF_(4) " and " XeF_(6) are expected to be : |
|
Answer» oxidising |
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| 27572. |
The noble gases have closed -shell electronic configuration and are monoatomic gases under normal conditions. The low bp of the ligher noble bp of the lighternoble gases are due to weak dispersion force between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers+2,+4and +6 . XeF_(4) reacts violently with water to give XeO_(3). the compound of xenone exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell. The structures of XeO_(3) is |
|
Answer» Linear 
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| 27573. |
ThemixtureofcompoundsAandBispassedthroughacolumnofAl _ 2O_3by usingalcoholsas eluant.CompoundA iselutedin preferencetocompound B. WhichofthecompoundsA orB, ismorereadilyadsorbedonthecolumn ? |
| Answer» SOLUTION :Sincecompound'A' comesoutofthe COLUMN beforecompound 'B',THEREFORE, COMPOUND 'B' ismorereadilyadsorbedon` Al _ 2 O_3`pakedinthe column. | |
| 27574. |
The noble gases which do not form clathrates are |
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Answer» He |
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| 27575. |
The mixture of Calcium Cyanamide and graphite is called |
|
Answer» Nitration MIXTURE |
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| 27576. |
The noble gases have close shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other inter atomic interactions. The direct reactions of xenon with fluorine leads to a series of compounds with oxidation number +2, +4" and" +6. XeF_(4) reacts violently with water to giveXeO_(3). The compounds of xenon exhibit stereochemistry and their geometries can be deduced considering the total number of electrons in valence shell Argon is used in are welding because of its. |
|
Answer» ability to lower reactivity of metals |
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| 27577. |
The mixture of 6 mole lithium, 1 mol sodiumand 3 moles magnesium on reaction with excess nitrogen gas at high temperature gives metal nitrides. Total number of consumed mole of nitrogen gas is ? |
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Answer» `Na+N_(2)RARR` No reaction `Mg+N_(2)rarr Mg_(3) N_(2)` On the basis of mole concept. |
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| 27578. |
The noble gas which used as a coling agent is |
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Answer» He |
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| 27579. |
The missing projectile in the reaction : ""_(1)^(2)H+?to""_(1)^(1)H+""_(0)^(1)n is : |
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Answer» PROTON |
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| 27580. |
The missing particle in the reaction, ._(92)^(235)U + ._(0)^(1)n rarr ._(56)Ba^(146) + ...+ 3_(0)^(1) n is |
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Answer» `._(32)^(87)Ge` |
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| 27581. |
The noble gases are unreactive because they: |
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Answer» Have the same NUMBER of electrons |
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| 27582. |
The missing particle in the reaction : ""_(99)^(253)Es+""_(2)^(4)Heto""_(101)^(256)Md+...... is |
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Answer» Deutron |
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| 27583. |
The noble gas which behaves abnormally in liquid state is |
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Answer» Xe |
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| 27584. |
The minimum weight of H_(2) filled in a balloon of weight w_(1) kg to just lift it from the ground is w_(2) kg. If w_(3) kg of H_(2) is filled into this balloon, the payload of the balloon will be (the volume of the balloon is supposed to be same with w_(2) or w_(3) kg of H_(2)) |
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Answer» `w_(2)-w_(3)` |
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| 27585. |
The noble gas that is discovered in the chromosphere of the Sun is |
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Answer» Rn |
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| 27586. |
The minimum torsional strain developed in butane is at dihedral angle (s) |
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Answer» `0^(º), 108^(º)` |
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| 27587. |
The noble gas mixture is cooled in a coconut bulb at 173 K.The gases that are not adsorbed are |
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Answer» Ne and Xe |
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| 27588. |
What is the minimum radius ratio that can give a specific co-ordination number. |
|
Answer» 0.225 |
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| 27589. |
The noble gas used in the preparation of first noble gas compound was: |
|
Answer» Xe |
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| 27590. |
The minimumquantity in grams of H_(2)Sneeded to precipitate 63 . 5 g of Cu^(2+) will be nearly . |
| Answer» Answer :C | |
| 27591. |
The noble gas compound iso - structure with bromate ion is : |
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Answer» `XeO_(3)` |
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| 27592. |
The noble gas compound iso-structural with bromate ion is: |
|
Answer» `XeO_3` |
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| 27593. |
The minimum number of carbon atoms to be present in monohalogen derivative of alkane to beoptically active is |
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Answer» four 
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| 27594. |
The no. of unpaired electrons in Fe^(3+) ion (Z=26) is |
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Answer» 4 |
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| 27595. |
The minimum number of carbon atom to be present in saturated acyclic ketone to be optically active is |
Answer» 
|
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| 27596. |
The no. of species having a megnetic of zero among Zn^(+2) , Cr^(+5) , Mn^(+2) , Fe^(+3), Sc^(+3)Mn^(+7), Ni^(+2) |
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Answer» |
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| 27597. |
The minimum milligrams of a protective colloid to be added to 10 mL red gold sol so that no coagulation takes place when 1 mL of 10% NaCl solution is rapidly added to it is called its………… |
| Answer» SOLUTION :GOLD NUMBER | |
| 27598. |
The no. of radioactive elements in VI group is _____ |
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Answer» |
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| 27599. |
The minimum millimoles of the electrolyte of the electrolyte that must be added to one litre of a colloidal sol so as to bring about its complete coagulation is called its………….. |
| Answer» SOLUTION :cooagulation/flocculation/precipitation VALUE | |
| 27600. |
The minimum mass of mixture of A_(2) and B_(2) required to produce at least 1 kg of each product is : (Given At. Mass of 'A' = 10 : At. Mass of 'B' = 120 ) |
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Answer» 2120 gm |
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