MCQOPTIONS
Saved Bookmarks
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.
| 5451. |
Euchlorine is a mixture of [CPMT 1988] |
| A. | \[C{{l}_{2}}\] and \[S{{O}_{2}}\] |
| B. | \[C{{l}_{2}}\] and \[Cl{{O}_{2}}\] |
| C. | \[C{{l}_{2}}\] and \[CO\] |
| D. | None of these |
| Answer» C. \[C{{l}_{2}}\] and \[CO\] | |
| 5452. |
Chlorine acts as a bleaching agent only in presence of [IIT 1983; DCE 2002] |
| A. | Dry air |
| B. | Moisture |
| C. | Sunlight |
| D. | Pure oxygen |
| Answer» C. Sunlight | |
| 5453. |
Chlorine cannot be used [MP PET/PMT 1988] |
| A. | As bleaching agent |
| B. | In sterilisation |
| C. | In preparation of antiseptic |
| D. | For extraction of silver and copper |
| Answer» E. | |
| 5454. |
Chlorine is used in water for [CBSE PMT 1988] |
| A. | Killing germs |
| B. | Prevention of pollution |
| C. | Cleansing |
| D. | Removing dirt |
| Answer» B. Prevention of pollution | |
| 5455. |
When cold \[NaOH\] reacts with \[C{{l}_{2}}\] which of the following is formed [AFMC 1992] |
| A. | \[NaClO\] |
| B. | \[NaCl{{O}_{2}}\] |
| C. | \[NaCl{{O}_{3}}\] |
| D. | None of these |
| Answer» B. \[NaCl{{O}_{2}}\] | |
| 5456. |
When chlorine water is exposed to sunlight, \[{{O}_{2}}\] is liberated. Hence [AFMC 1989] |
| A. | Hydrogen has little affinity to \[{{O}_{2}}\] |
| B. | Hydrogen has more affinity to \[{{O}_{2}}\] |
| C. | Hydrogen has more affinity to \[C{{l}_{2}}\] |
| D. | It is a reducing agent |
| Answer» D. It is a reducing agent | |
| 5457. |
Chlorine can be manufactured from [CPMT 1989] |
| A. | Electrolysis of \[NaCl\] |
| B. | Electrolysis of brine |
| C. | Electrolysis of bleaching powder |
| D. | All of these |
| Answer» C. Electrolysis of bleaching powder | |
| 5458. |
Chlorine gas is dried over [CPMT 1980] |
| A. | \[CaO\] |
| B. | \[NaOH\] |
| C. | \[KOH\] |
| D. | Conc. \[{{H}_{2}}S{{O}_{4}}\] |
| Answer» E. | |
| 5459. |
Which of the following has greatest reducing power [CPMT 1984, 88, 89, 94] |
| A. | \[HI\] |
| B. | \[HBr\] |
| C. | \[HCl\] |
| D. | \[HF\] |
| Answer» B. \[HBr\] | |
| 5460. |
In the preparation of chlorine from \[HCl,\] \[Mn{{O}_{2}}\] acts as [CPMT 1981] |
| A. | Oxidising agent |
| B. | Reducing agent |
| C. | Catalytic agent |
| D. | Dehydrating agent |
| Answer» B. Reducing agent | |
| 5461. |
The electrolysis of a certain liquid resulted in the formation of hydrogen at the cathode and chlorine at the anode. The liquid is [EAMCET 1979] |
| A. | Pure water |
| B. | \[{{H}_{2}}S{{O}_{4}}\] solution |
| C. | \[NaCl\]solution in water |
| D. | \[CuC{{l}_{2}}\] solution in water |
| Answer» D. \[CuC{{l}_{2}}\] solution in water | |
| 5462. |
In which of the following, oxygen has + 2 oxidation number [EAMCET 1986] |
| A. | \[{{F}_{2}}O\] |
| B. | \[C{{l}_{2}}O\] |
| C. | \[N{{a}_{2}}{{O}_{2}}\] |
| D. | \[N{{a}_{2}}O\] |
| Answer» B. \[C{{l}_{2}}O\] | |
| 5463. |
Fluorine reacts with water to give [BHU 1988, 89] |
| A. | \[HF\] and \[{{O}_{2}}\] |
| B. | \[HF\] and \[O{{F}_{2}}\] |
| C. | \[HF\] and \[{{O}_{3}}\] |
| D. | \[HF,{{O}_{2}}\] and \[{{O}_{3}}\] |
| Answer» E. | |
| 5464. |
In the isolation of fluorine, a number of difficulties were encountered. Which statement is correct [NCERT 1983, 86] |
| A. | The potential required for the discharge of the fluoride ions is the lowest |
| B. | Fluorine reacts with most glass vessels |
| C. | Fluorine has great affinity for hydrogen |
| D. | Electrolysis of aqueous \[HF\] gives ozonised oxygen |
| Answer» B. Fluorine reacts with most glass vessels | |
| 5465. |
Fluorine does not form positive oxidation states because [AIIMS 1987] |
| A. | It is most electronegative element |
| B. | It forms only anions in ionic compounds |
| C. | It cannot form multiple bonding |
| D. | It shows non-bonded electron pair repulsion due to small size |
| Answer» B. It forms only anions in ionic compounds | |
| 5466. |
Which of the following will displace the halogen from the solution of the halide [EAMCET 1979] |
| A. | \[B{{r}_{2}}\] added to \[NaCl\] solution |
| B. | \[C{{l}_{2}}\] added to \[KCl\] solution |
| C. | \[KCl\] added to \[NaF\] solution |
| D. | \[B{{r}_{2}}\] added to \[KI\] solution |
| Answer» E. | |
| 5467. |
Mark the element which displaces three halogens from their compounds [MP PMT 1980, 82; BHU 1984; NCERT 1987] |
| A. | \[F\] |
| B. | \[Cl\] |
| C. | \[Br\] |
| D. | \[I\] |
| Answer» B. \[Cl\] | |
| 5468. |
Fluorine is a stronger oxidising agent than chlorine in aqueous solution. This is attributed to many factors except [Pb. CET 1989] |
| A. | Heat of dissociation |
| B. | Electron affinity |
| C. | Heat of hydration |
| D. | Ionisation potential |
| Answer» C. Heat of hydration | |
| 5469. |
Bromine is liberated when an aqueous solution of potassium bromide is treated with [CBSE PMT 1989] |
| A. | \[C{{l}_{2}}\] |
| B. | \[{{I}_{2}}\] |
| C. | Dilute \[{{H}_{2}}S{{O}_{4}}\] |
| D. | \[S{{O}_{2}}\] |
| Answer» B. \[{{I}_{2}}\] | |
| 5470. |
Which of the following is strongest oxidising agent [CPMT 1978, 91, 94; MNR 1990; AMU 1983, 84; MP PMT 1991, 92, 96; IIT 1992; UPSEAT 2000] |
| A. | \[{{F}_{2}}\] |
| B. | \[C{{l}_{2}}\] |
| C. | \[B{{r}_{2}}\] |
| D. | \[{{I}_{2}}\] |
| Answer» B. \[C{{l}_{2}}\] | |
| 5471. |
Which of the following arrangement for the three halogens \[Cl,\]\[Br\] and \[I\] when placed in the order of their increasing electron affinity is correct [CPMT 1990] |
| A. | \[Cl,\] \[Br,\] \[I\] |
| B. | \[I,\] Br, \[Cl\] |
| C. | \[Br,\] \[Cl,\] \[I\] |
| D. | \[I,\] \[Cl,\] \[Br\] |
| Answer» C. \[Br,\] \[Cl,\] \[I\] | |
| 5472. |
Mark the element which shows only one oxidation state [BHU 1988; MP PET 2002] |
| A. | \[F\] |
| B. | \[Cl\] |
| C. | \[Br\] |
| D. | \[I\] |
| Answer» B. \[Cl\] | |
| 5473. |
Mark the smallest atom [CPMT 1984, 89] |
| A. | \[F\] |
| B. | \[Cl\] |
| C. | \[Br\] |
| D. | \[I\] |
| Answer» B. \[Cl\] | |
| 5474. |
As the atomic number of halogens increases, the halogens [MP PMT 1991] |
| A. | Lose the outermost electrons less readily |
| B. | Become lighter in colour |
| C. | Become less denser |
| D. | Gain electrons less readily |
| Answer» E. | |
| 5475. |
Iodine is formed when potassium iodide reacts with a solution of [MNR 1984; MP PET/PMT 1998] |
| A. | \[ZnS{{O}_{4}}\] |
| B. | \[CuS{{O}_{4}}\] |
| C. | \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] |
| D. | \[N{{a}_{2}}S{{O}_{4}}\] |
| Answer» C. \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] | |
| 5476. |
Which of the following pairs is not correctly matched [MP PET 1993] |
| A. | A halogen which is liquid at room temperature?Bromine |
| B. | The most electronegative element?Fluorine |
| C. | The most reactive halogen?Fluorine |
| D. | The strongest oxidizing halogen?Iodine |
| Answer» E. | |
| 5477. |
When thiosulphate ion is oxidised by iodine, which one of the following ion is produced [CPMT 1989; AFMC 1990; CBSE PMT 1996] |
| A. | \[SO_{3}^{2-}\] |
| B. | \[SO_{4}^{2-}\] |
| C. | \[{{S}_{4}}O_{6}^{2-}\] (Tetrathionate) |
| D. | \[{{S}_{2}}O_{6}^{2-}\] |
| Answer» D. \[{{S}_{2}}O_{6}^{2-}\] | |
| 5478. |
Aqueous solution of which of the following acids cannot be kept in a bottle of glass [MP PET 1989] |
| A. | \[HF\] |
| B. | \[HCl\] |
| C. | \[HBr\] |
| D. | \[HI\] |
| Answer» B. \[HCl\] | |
| 5479. |
Which of the following after reacting with \[KI\] do not remove iodine [MP PET 1989] |
| A. | \[CuS{{O}_{4}}\] |
| B. | \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] |
| C. | \[HN{{O}_{3}}\] |
| D. | \[HCl\] |
| Answer» E. | |
| 5480. |
The more activeness of fluorine is due to [MP PMT 1990] |
| A. | F-F bond has less energy |
| B. | \[{{F}_{2}}\] is gas at normal temperature |
| C. | Its electronic bond is maximum |
| D. | F-F bond has more energy |
| Answer» B. \[{{F}_{2}}\] is gas at normal temperature | |
| 5481. |
In dark, which of the following reacts with hydrogen [MP PMT/PET 1988; Kurukshetra CEE 1998] |
| A. | \[B{{r}_{2}}\] |
| B. | \[{{F}_{2}}\] |
| C. | \[{{I}_{2}}\] |
| D. | \[C{{l}_{2}}\] |
| Answer» C. \[{{I}_{2}}\] | |
| 5482. |
Which reaction cannot be used for the production of halogen acid [MP PMT 1989] |
| A. | \[2KBr+{{H}_{2}}S{{O}_{4}}\to {{K}_{2}}S{{O}_{4}}+2HBr\] |
| B. | \[NaHS{{O}_{4}}+NaCl\to N{{a}_{2}}S{{O}_{4}}+HCl\] |
| C. | \[NaCl+{{H}_{2}}S{{O}_{4}}\to NaHS{{O}_{4}}+HCl\] |
| D. | \[Ca{{F}_{2}}+{{H}_{2}}S{{O}_{4}}\to CaS{{O}_{4}}+2HF\] |
| Answer» B. \[NaHS{{O}_{4}}+NaCl\to N{{a}_{2}}S{{O}_{4}}+HCl\] | |
| 5483. |
In \[KI\] solution, \[{{I}_{2}}\] readily dissolves and forms [MP PMT 1989; EAMCET 1992] |
| A. | \[{{I}^{-}}\] |
| B. | \[K{{I}_{2}}\] |
| C. | \[KI_{2}^{-}\] |
| D. | \[K{{I}_{3}}\] |
| Answer» E. | |
| 5484. |
Nitric acid converts iodine into [MP PMT 1990] |
| A. | Iodic acid |
| B. | Hydroiodic acid |
| C. | Iodine nitrate |
| D. | Iodine pentaoxide |
| Answer» B. Hydroiodic acid | |
| 5485. |
Chlorine can remove [MP PET 1990] |
| A. | \[Br\] from \[NaBr\] solution |
| B. | \[F\] from \[NaF\] solution |
| C. | \[Cl\] from \[NaCl\] solution |
| D. | \[F\] from \[Ca{{F}_{2}}\] solution |
| Answer» B. \[F\] from \[NaF\] solution | |
| 5486. |
Which of the following represents outermost shell electronic configuration of halogens [MP PET 1991; Manipal MEE 1995; MP PMT 1996] |
| A. | \[{{s}^{2}}{{p}^{3}}\] |
| B. | \[{{s}^{2}}{{p}^{6}}\] |
| C. | \[{{s}^{2}}{{p}^{4}}\] |
| D. | \[{{s}^{2}}{{p}^{5}}\] |
| Answer» E. | |
| 5487. |
Strongest reducing agent is [MP PMT 1990] |
| A. | \[{{F}^{-}}\] |
| B. | \[C{{l}^{-}}\] |
| C. | \[B{{r}^{-}}\] |
| D. | \[{{I}^{-}}\] |
| Answer» E. | |
| 5488. |
The solubility of iodine in water increases in the presence of [CPMT 1973, 74, 78, 86, 89, 91; NCERT 1973; AFMC 1995] |
| A. | Alcohol |
| B. | Chloroform |
| C. | Sodium hydroxide |
| D. | Potassium iodide |
| Answer» E. | |
| 5489. |
Which statement is false [MP PET 1991] |
| A. | Electronegativity of fluorine is maximum |
| B. | Electron affinity of fluorine is maximum |
| C. | Melting point of fluorine is minimum |
| D. | Boiling point of fluorine is maximum |
| Answer» C. Melting point of fluorine is minimum | |
| 5490. |
Which of the following represents clear electropositive properties [MP PET/PMT 1988; MP PMT 1991] |
| A. | \[F\] |
| B. | \[Cl\] |
| C. | \[Br\] |
| D. | \[I\] |
| Answer» E. | |
| 5491. |
Which of the following is most active halogen [MP PET 1990] |
| A. | \[C{{l}_{2}}\] |
| B. | \[B{{r}_{2}}\] |
| C. | \[{{I}_{2}}\] |
| D. | \[{{F}_{2}}\] |
| Answer» E. | |
| 5492. |
Sea weed is employed as a source of manufacture of [CPMT 1982, 86, 2002; MP PET 2002] |
| A. | \[F\] |
| B. | \[I\] |
| C. | \[Br\] |
| D. | \[Cl\] |
| Answer» C. \[Br\] | |
| 5493. |
Which of the following is correct [CPMT 1985] |
| A. | Iodine is a solid |
| B. | Chlorine is insoluble in water |
| C. | Iodine is more reactive than bromine |
| D. | Bromine is more reactive than chlorine |
| Answer» B. Chlorine is insoluble in water | |
| 5494. |
Iodine deficiency in diet causes |
| A. | Nightblindness |
| B. | Rickets |
| C. | Goitre |
| D. | Beri-beri |
| Answer» D. Beri-beri | |
| 5495. |
The strongest acid amongst the following is [IIT 1989] |
| A. | \[HCl{{O}_{4}}\] |
| B. | \[HCl{{O}_{3}}\] |
| C. | \[HCl{{O}_{2}}\] |
| D. | \[HClO\] |
| Answer» B. \[HCl{{O}_{3}}\] | |
| 5496. |
A quick supply of \[C{{l}_{2}}\] gas may be made by reacting crystals of \[KMn{{O}_{4}}\] with a concentrated solution of [CPMT 1973] |
| A. | Potassium chloride |
| B. | Sodium chloride |
| C. | Bleaching powder |
| D. | Hydrochloric acid |
| Answer» E. | |
| 5497. |
Colour of iodine solution is disappeared by shaking it with aqueous solution of [CPMT 1979, 81; MP PET/PMT 1988; MP PMT 1986; RPMT 1997, 2002] |
| A. | \[{{H}_{2}}S{{O}_{4}}\] |
| B. | \[N{{a}_{2}}S\] |
| C. | \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] |
| D. | \[N{{a}_{2}}S{{O}_{4}}\] |
| Answer» D. \[N{{a}_{2}}S{{O}_{4}}\] | |
| 5498. |
Phosgene is the common name of [CPMT 1974, 86; DPMT 1989; MP PMT 1994] |
| A. | Carbonyl chloride |
| B. | Phosphine |
| C. | Phosphorus oxychloride |
| D. | Phosphorus trichloride |
| Answer» B. Phosphine | |
| 5499. |
On boiling an aqueous solution of \[KCl{{O}_{3}}\] with iodine, the following product is obtained [NCERT 1980] |
| A. | \[KI{{O}_{3}}\] |
| B. | \[KCI{{O}_{4}}\] |
| C. | \[KI{{O}_{4}}\] |
| D. | \[KCl\] |
| Answer» B. \[KCI{{O}_{4}}\] | |
| 5500. |
\[{{I}_{2}}\] dissolves in KI solution due to the formation of [CPMT 2004] |
| A. | \[K{{I}_{2}}\]and \[{{I}^{-}}\] |
| B. | \[{{K}^{+}},{{I}^{-}}\] and \[{{I}_{2}}\] |
| C. | \[KI_{3}^{-}\] |
| D. | None of these |
| Answer» D. None of these | |