MCQOPTIONS
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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 5551. |
What is the product obtained in the reaction of \[HgC{{l}_{2}}\] and \[Hg{{(CN)}_{2}}\] [MP PET 2002] |
| A. | \[{{(CN)}_{2}}\] |
| B. | Addition compound \[HgC{{l}_{2}}.\,Hg{{(CN)}_{2}}\] |
| C. | \[Hg(CN)\,Cl\] |
| D. | \[Hg\,[Hg{{(CN)}_{2}}C{{l}_{2}}]\] |
| Answer» B. Addition compound \[HgC{{l}_{2}}.\,Hg{{(CN)}_{2}}\] | |
| 5552. |
Hydrogen has a tendency to gain one electron to acquire helium configuration. In this respect it resembles [JIPMER 1999] |
| A. | Halogens |
| B. | Actinides |
| C. | Transition elements |
| D. | Alkali metals |
| Answer» B. Actinides | |
| 5553. |
Which is the strongest of the following acids [JIPMER 1999] |
| A. | \[HCl{{O}_{4}}\] |
| B. | \[{{H}_{2}}S{{O}_{4}}\] |
| C. | \[HCl\] |
| D. | \[HN{{O}_{3}}\] |
| Answer» B. \[{{H}_{2}}S{{O}_{4}}\] | |
| 5554. |
Which of the following statements is correct [BHU 1997] |
| A. | Only chlorine and bromine form oxy acids |
| B. | All halogens form oxy acids |
| C. | All halogens except fluorine form oxy acids |
| D. | Only iodine form oxy acids |
| Answer» D. Only iodine form oxy acids | |
| 5555. |
Chlorine reacts with sodium hydroxide under various condition to give [NCERT 1973] |
| A. | Sodium chloride |
| B. | Sodium hypochlorite |
| C. | Sodium chlorate |
| D. | All of these |
| Answer» E. | |
| 5556. |
A one litre flask is full of brown bromine vapour. The intensity of brown colour of vapour will not decrease appreciably on adding to the flask some [CBSE PMT 1998] |
| A. | Pieces of marble |
| B. | Carbon disulphide |
| C. | Carbon tetrachloride |
| D. | Animal charcoal powder |
| Answer» B. Carbon disulphide | |
| 5557. |
Bleaching powder is correctly represented as [RPMT 1997] |
| A. | \[CaOC{{l}_{2}}\] |
| B. | \[CaO\] |
| C. | \[CaO(Cl)\] |
| D. | \[CaCl(OCl)\] |
| Answer» E. | |
| 5558. |
Iodine and hypo react to produce [DPMT 2001] |
| A. | \[N{{a}_{2}}S\] |
| B. | \[HCl\] |
| C. | \[N{{a}_{2}}{{S}_{4}}{{O}_{6}}\] |
| D. | \[N{{a}_{2}}S{{O}_{3}}\] |
| Answer» D. \[N{{a}_{2}}S{{O}_{3}}\] | |
| 5559. |
Which has the strong bond [DCE 2001] |
| A. | F - F |
| B. | F - Cl |
| C. | F - Br |
| D. | Cl - B |
| Answer» B. F - Cl | |
| 5560. |
The lattice energy of the lithium halides is in the following order [Roorkee Qualifying 1998] |
| A. | \[LiF>LiCl>LiBr>LiI\] |
| B. | \[LiCl>LiF>LiBr>LiI\] |
| C. | \[LiBr>LiCl>LiF>LiI\] |
| D. | \[LiI>LiBr>LiCl>LiF\] |
| Answer» B. \[LiCl>LiF>LiBr>LiI\] | |
| 5561. |
The chief source of iodine in which it is present as sodium iodate is [JIPMER 1997] |
| A. | Sea weeds |
| B. | Caliche |
| C. | Carnallite |
| D. | Iodine never exists as sodium iodate |
| Answer» C. Carnallite | |
| 5562. |
The correct order of acidic strength is [Pb. PMT 1998; AFMC 1998;KCET 2000; Orissa JEE 2005] |
| A. | \[HF<HCl<HBr<HI\] |
| B. | \[HCl<HBr<HF<HI\] |
| C. | \[HBr<HCl<HI<HF\] |
| D. | \[HI<HBr<HCl<HF\] |
| Answer» B. \[HCl<HBr<HF<HI\] | |
| 5563. |
Which of the following sequence is correct with reference to the oxidation number of iodine [EAMCET 1997] |
| A. | \[{{I}_{2}}>ICl<HI<HI{{O}_{4}}\] |
| B. | \[HI{{O}_{4}}<ICl<{{I}_{2}}<HI\] |
| C. | \[{{I}_{2}}<HI<ICl<HI{{O}_{4}}\] |
| D. | \[HI<{{I}_{2}}<ICl<HI{{O}_{4}}\] |
| Answer» E. | |
| 5564. |
Which one of the following compounds in aqueous solution gives a white precipitate with perchloric acid [EAMCET 1997] |
| A. | \[NaCl\] |
| B. | \[KCl\] |
| C. | \[MgC{{l}_{2}}\] |
| D. | \[FeC{{l}_{3}}\] |
| Answer» C. \[MgC{{l}_{2}}\] | |
| 5565. |
Which one of the following acids is the weakest [MP PMT 1985] |
| A. | \[HClO\] |
| B. | \[HBr\] |
| C. | \[HCl{{O}_{3}}\] |
| D. | \[HCl\] |
| Answer» B. \[HBr\] | |
| 5566. |
Iodine dissolves readily in [BHU 1996] |
| A. | Water |
| B. | Potassium iodide |
| C. | Carbon tetrachloride |
| D. | Alcohol |
| Answer» C. Carbon tetrachloride | |
| 5567. |
The least active halogen with hydrogen is [DPMT 1996] |
| A. | Cl |
| B. | I |
| C. | Br |
| D. | F |
| Answer» C. Br | |
| 5568. |
White enamel of our teeth is [Bihar CEE 1995] |
| A. | \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\] |
| B. | \[Ca{{F}_{2}}\] |
| C. | \[CaC{{l}_{2}}\] |
| D. | \[CaB{{r}_{2}}\] |
| Answer» C. \[CaC{{l}_{2}}\] | |
| 5569. |
Hydrogen iodide cannot be prepared by the action of conc. \[{{H}_{2}}S{{O}_{4}}\] on potassium iodide because [Bihar CEE 1995] |
| A. | \[HI\] is stronger than \[{{H}_{2}}S{{O}_{4}}\] |
| B. | \[HI\] is more volatile than \[{{H}_{2}}S{{O}_{4}}\] |
| C. | \[{{H}_{2}}S{{O}_{4}}\] is an oxidising agent |
| D. | \[{{H}_{2}}S{{O}_{4}}\] forms complex |
| Answer» D. \[{{H}_{2}}S{{O}_{4}}\] forms complex | |
| 5570. |
Which one among the following non-metals liquid at \[{{25}^{o}}C\] [MP PMT 1999] |
| A. | Bromine |
| B. | Carbon |
| C. | Phosphorus |
| D. | Sulphur |
| Answer» B. Carbon | |
| 5571. |
Metal halide which is insoluble in water is [AIIMS 1996] |
| A. | \[AgI\] |
| B. | \[KBr\] |
| C. | \[CaC{{l}_{2}}\] |
| D. | \[AgF\] |
| Answer» B. \[KBr\] | |
| 5572. |
NaOCl is used as a bleaching agent and sterilising agent. It can be synthesized by the action of [RPET 2003] |
| A. | \[NaCl\] with \[{{H}_{2}}O\] |
| B. | \[N{{H}_{4}}Cl\] with NaOH |
| C. | \[C{{l}_{2}}\] with cold and dilute NaOH |
| D. | \[C{{l}_{2}}\] with hot and concentrated NaOH |
| Answer» D. \[C{{l}_{2}}\] with hot and concentrated NaOH | |
| 5573. |
Halogen acid used in the preparation of aqua regia is [DPMT 2002] |
| A. | HBr |
| B. | HI |
| C. | HCl |
| D. | HF |
| Answer» D. HF | |
| 5574. |
The correct order of acidic strength [Pb. CET 2004] |
| A. | \[C{{l}_{2}}{{O}_{7}}>S{{O}_{2}}>{{P}_{4}}{{O}_{10}}\] |
| B. | \[{{K}_{2}}>CaO>MgO\] |
| C. | \[C{{O}_{2}}>{{N}_{2}}{{O}_{5}}>S{{O}_{3}}\] |
| D. | \[N{{a}_{2}}O>MgO>A{{l}_{2}}{{O}_{3}}\] |
| Answer» B. \[{{K}_{2}}>CaO>MgO\] | |
| 5575. |
Which one of the halogen acids is a liquid [MP PMT 1985] |
| A. | \[HF\] |
| B. | \[HCl\] |
| C. | \[HBr\] |
| D. | \[HI\] |
| Answer» B. \[HCl\] | |
| 5576. |
Which of the following statements is not true [CBSE PMT 2003] |
| A. | HF is a stronger acid than HCl |
| B. | Among halide ions, iodide is the most powerful reducing agent |
| C. | Fluorine is the only halogen that does not show a variable oxidation state |
| D. | HOCl is a stronger acid than HOBr |
| Answer» B. Among halide ions, iodide is the most powerful reducing agent | |
| 5577. |
On exciting \[C{{l}_{2}}\] molecule by UV light, we get [UPSEAT 2003] |
| A. | Cl |
| B. | \[C{{l}^{+}}\] |
| C. | \[C{{l}^{-}}\] |
| D. | All |
| Answer» B. \[C{{l}^{+}}\] | |
| 5578. |
Chlorine dioxide is best prepared by passing dry [Kerala PMT 2003] |
| A. | Chlorine gas over hot \[HgO\] |
| B. | Chlorine and oxygen gas over hot pt catalyst |
| C. | Hydrogen chloride and oxygen over silver oxide |
| D. | Hydrogen chloride over phosphorus pentoxide |
| E. | Chlorine over hot silver chlorate |
| Answer» F. | |
| 5579. |
Which one will liberate \[B{{r}_{2}}\] from KBr [BVP 2003] |
| A. | \[{{I}_{2}}\] |
| B. | \[S{{O}_{2}}\] |
| C. | HI |
| D. | \[C{{l}_{2}}\] |
| Answer» E. | |
| 5580. |
Which of the following is prepared by electrolytic method [CBSE PMT 2001] |
| A. | \[Ca\] |
| B. | \[Sn\] |
| C. | \[S\] |
| D. | \[{{F}_{2}}\] |
| Answer» E. | |
| 5581. |
\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}+{{I}_{2}}\to \]Product is [BHU 2003] |
| A. | \[N{{a}_{2}}S\] |
| B. | \[NaI\] |
| C. | \[N{{a}_{2}}{{S}_{4}}{{O}_{6}}\] |
| D. | \[{{S}_{2}}\] |
| Answer» D. \[{{S}_{2}}\] | |
| 5582. |
The effective component of bleaching powder is ..... of calcium [Kerala (Engg.) 2002] |
| A. | Chlorine |
| B. | Bromine |
| C. | Aluminium |
| D. | Calcium |
| Answer» B. Bromine | |
| 5583. |
Which of the following element is extracted commercially by the electrolysis of an aqueous solution of its compound [KCET 2002] |
| A. | Chlorine |
| B. | Bromine |
| C. | Aluminium |
| D. | Calcium |
| Answer» B. Bromine | |
| 5584. |
Bromine is obtained on commercial scale from [CPMT 1985] |
| A. | Caliche |
| B. | Carnellite |
| C. | Common salt |
| D. | Cryolite |
| Answer» C. Common salt | |
| 5585. |
The ?mercerised cellulose? is chemically prepared by |
| A. | Acetylation |
| B. | Mercuriation |
| C. | Halogenation |
| D. | Hydrolysis |
| Answer» E. | |
| 5586. |
Polymerization of glycol with dicarboxylic acids is |
| A. | Addition polymerisation |
| B. | Condensation polymerisation |
| C. | Telomerisation |
| D. | Any of these |
| Answer» C. Telomerisation | |
| 5587. |
When condensation product of hexamethylenediamine and adipic acid is heated to \[553\,K\,({{80}^{o}}C)\] in an atmosphere of nitrogen for about 4-5 hours, the product obtained is [DCE 2002; MHCET 2004] |
| A. | Solid polymer of nylon 66 |
| B. | Liquid polymer of nylon 66 |
| C. | Gaseous polymer of nylon 66 |
| D. | Liquid polymer of nylon 6 |
| Answer» C. Gaseous polymer of nylon 66 | |
| 5588. |
Monomers are converted to polymer by [DCE 2002] |
| A. | Hydrolysis of monomers |
| B. | Condensation reaction between monomers |
| C. | Protonation of monomers |
| D. | None of these |
| Answer» C. Protonation of monomers | |
| 5589. |
The degree of crystallinity of which of the following is highest |
| A. | Atactic polyvinylchloride |
| B. | Isotactic polyvinylchloride |
| C. | Syndiotactic polyvinylchloride |
| D. | All of these |
| Answer» D. All of these | |
| 5590. |
Condensation product of caprolactum is [BCECE 2005] |
| A. | Nylon-6 |
| B. | Nylon-66 |
| C. | Nylon-60 |
| D. | Nylon-6,10 |
| Answer» B. Nylon-66 | |
| 5591. |
PVC is prepared by the polymerization of [Pb. CET 2002] |
| A. | Ethylene |
| B. | 1-chloropropene |
| C. | Propene |
| D. | 1-chloroethene |
| Answer» E. | |
| 5592. |
The compound used in the manufacture of terylene is [MP PET 1996] |
| A. | Ethylene |
| B. | Vinyl chloride |
| C. | Ethylene glycol |
| D. | Adipic acid |
| Answer» D. Adipic acid | |
| 5593. |
Terylene is the polymer of [AFMC 1993; Manipal MEE 1995; KCET 1998; 2001] |
| A. | Ethylene glycol and terephthalic acid |
| B. | Melamine and formaldehyde |
| C. | Vinyl chloride and formaldehyde |
| D. | Hex methylene diamine and adipic acid |
| Answer» B. Melamine and formaldehyde | |
| 5594. |
Which one of the following monomers gives the polymer neoprene on polymerization [CBSE PMT 2003] |
| A. | \[C{{F}_{2}}=C{{F}_{2}}\] |
| B. | \[C{{H}_{2}}=CHCl\] |
| C. | \[CC{{l}_{2}}=CC{{l}_{2}}\] |
| D. | \[C{{H}_{2}}=\overset{\,\,Cl}{\mathop{\overset{|}{\mathop{C}}\,}}\,-CH=C{{H}_{2}}\] |
| Answer» E. | |
| 5595. |
Rayon yarns are obtained from [MP PET 2001] |
| A. | Polymethylene |
| B. | Polyesters |
| C. | Cellulose |
| D. | Styrene |
| Answer» D. Styrene | |
| 5596. |
The starting material for the preparation of styrene is [MP PMT 2001] |
| A. | Ethane |
| B. | Ethene |
| C. | Ethyne |
| D. | Vinyl chloride |
| Answer» D. Vinyl chloride | |
| 5597. |
The catalyst used for the polymerisation of olefins is [Kerala (Engg.) 2002] |
| A. | Ziegler Natta catalyst |
| B. | Wilkinson?s catalyst |
| C. | Pd-catalyst |
| D. | Zeise?s salt catalyst |
| Answer» B. Wilkinson?s catalyst | |
| 5598. |
Which polymer is formed by chloroethene [RPET 1999] |
| A. | Teflon |
| B. | Polyethene |
| C. | PVC |
| D. | Nylon |
| Answer» D. Nylon | |
| 5599. |
The compound required for the formation of a thermosetting polymer with methanol is [CBSE 1992, 95; MNR 1993; JIPMER 1999; BHU 2000; AFMC 2000; MP PET 2003; RPMT 2002] |
| A. | Benzene |
| B. | Phenyl amine |
| C. | Benzaldehyde |
| D. | Phenol |
| Answer» E. | |
| 5600. |
Acetate rayon is prepared from [Kurukshetra CEE 1998] |
| A. | Acetic acid |
| B. | Glycerol |
| C. | Starch |
| D. | Cellulose |
| Answer» E. | |