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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.
| 5501. |
Which of the following is anhydride of perchloric acid [CPMT 2004] |
| A. | \[C{{l}_{2}}{{O}_{7}}\] |
| B. | \[C{{l}_{2}}{{O}_{5}}\] |
| C. | \[C{{l}_{2}}{{O}_{3}}\] |
| D. | \[HClO\] |
| Answer» B. \[C{{l}_{2}}{{O}_{5}}\] | |
| 5502. |
Of the following acids, the one that is strongest is [DPMT 2004] |
| A. | \[HBr{{O}_{4}}\] |
| B. | \[HOCl\] |
| C. | \[HN{{O}_{2}}\] |
| D. | \[{{H}_{3}}P{{O}_{3}}\] |
| Answer» B. \[HOCl\] | |
| 5503. |
Which one of the following oxides is expected exhibit paramagnetic behaviour [CBSE PMT 2005] |
| A. | \[C{{O}_{2}}\] |
| B. | \[S{{O}_{2}}\] |
| C. | \[Cl{{O}_{2}}\] |
| D. | \[Si{{O}_{2}}\] |
| Answer» D. \[Si{{O}_{2}}\] | |
| 5504. |
With cold and dilute sodium hydroxide fluorine reacts to give [MH CET 2004] |
| A. | \[NaF\] and \[O{{F}_{2}}\] |
| B. | \[NaF+{{O}_{3}}\] |
| C. | \[{{O}_{2}}\ \text{and}\ {{O}_{3}}\] |
| D. | \[NaF+{{O}_{2}}\] |
| Answer» B. \[NaF+{{O}_{3}}\] | |
| 5505. |
Which of the hydrogen halides forms salts like \[KH{{X}_{2}}\](where X is a halogen atom) [Kerala PMT 2004] |
| A. | HF |
| B. | HCl |
| C. | HI |
| D. | HBr |
| E. | All of these |
| Answer» B. HCl | |
| 5506. |
The solubility of \[{{I}_{2}}\] increases in water in the presence of [Pb. CET 2002] |
| A. | KI |
| B. | \[{{H}_{2}}S{{O}_{4}}\] |
| C. | \[KMn{{O}_{4}}\] |
| D. | \[N{{H}_{3}}\] |
| Answer» B. \[{{H}_{2}}S{{O}_{4}}\] | |
| 5507. |
When \[{{I}_{2}}\]is passed through KCl, KF and KBr solutions [CPMT 2004] |
| A. | \[C{{l}_{2}}\] and \[B{{r}_{2}}\]are evolved |
| B. | \[C{{l}_{2}}\]is evolved |
| C. | \[C{{l}_{2}},\ B{{r}_{2}}\]and \[{{F}_{2}}\]are evolved |
| D. | None of these |
| Answer» E. | |
| 5508. |
The reaction of the type \[2{{X}_{2}}+S\to S{{X}_{4}}\]is shown by sulphur when X is [DCE 2003] |
| A. | Fluorine or chlorine |
| B. | Chlorine only |
| C. | Chlorine and bromine only |
| D. | \[F,\ Cl,\ Br\] all |
| Answer» B. Chlorine only | |
| 5509. |
Which is the most volatile compound [CPMT 1979; AIIMS 1980; DPMT 1982; Kurukshetra CEE 1998; J & K CET 2005; DPMT 2002] |
| A. | \[HF\] |
| B. | \[HCl\] |
| C. | \[HBr\] |
| D. | \[HI\] |
| Answer» C. \[HBr\] | |
| 5510. |
Among the halogens, the one which is oxidised by nitric acid is [KCET 2004] |
| A. | Fluorine |
| B. | Iodine |
| C. | Chlorine |
| D. | Bromine |
| Answer» C. Chlorine | |
| 5511. |
Which of the following properties increases on going down from \[F\] to \[I\] in Group VII-A of the periodic table? [MP PMT 1997] |
| A. | Electronegativity |
| B. | Volatile nature |
| C. | Ionic radius |
| D. | Oxidising power |
| Answer» D. Oxidising power | |
| 5512. |
For which one of the following properties of halogens the sequence \[F>Cl>Br>I\] holds good [MP PET/PMT 1998] |
| A. | Electron affinity |
| B. | Electronegativity |
| C. | Atomic radius |
| D. | Boiling point |
| Answer» C. Atomic radius | |
| 5513. |
On heating \[KCl{{O}_{3}}\], we get [CPMT 1999] |
| A. | \[C{{l}_{2}}O\] |
| B. | \[Cl{{O}_{2}}\] |
| C. | \[Cl{{O}_{3}}\] |
| D. | \[C{{l}_{2}}{{O}_{7}}\] |
| Answer» C. \[Cl{{O}_{3}}\] | |
| 5514. |
Among \[C{{l}^{-}},\] \[B{{r}^{-}},\] \[{{I}^{-}},\] the correct order for being oxidise to dihalogen is [CPMT 1999] |
| A. | \[{{I}^{-}}>C{{l}^{-}}>B{{r}^{-}}\] |
| B. | \[C{{l}^{-}}>B{{r}^{-}}>{{I}^{-}}\] |
| C. | \[{{I}^{-}}>B{{r}^{-}}>C{{l}^{-}}\] |
| D. | \[B{{r}^{-}}>{{I}^{-}}>C{{l}^{-}}\] |
| Answer» D. \[B{{r}^{-}}>{{I}^{-}}>C{{l}^{-}}\] | |
| 5515. |
Which of the following is used in the preparation of chlorine [CBSE PMT 1999] |
| A. | \[Only\]\[Mn{{O}_{2}}\] |
| B. | \[OnlyKMn{{O}_{4}}\] |
| C. | Both \[Mn{{O}_{2}}\] and \[KMn{{O}_{4}}\] |
| D. | Either \[Mn{{O}_{2}}\] or \[KMn{{O}_{4}}\] |
| Answer» D. Either \[Mn{{O}_{2}}\] or \[KMn{{O}_{4}}\] | |
| 5516. |
Iodine is released when potassium iodide reacts with [UPSEAT 1999] |
| A. | \[ZnS{{O}_{4}}\] |
| B. | \[CuS{{O}_{4}}\] |
| C. | \[FeS{{O}_{4}}\] |
| D. | \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] |
| Answer» C. \[FeS{{O}_{4}}\] | |
| 5517. |
Which of the following halogens does not form oxyacid [MP PET 1997] |
| A. | Fluorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» B. Chlorine | |
| 5518. |
Which of the following is the weakest acid [BHU 1984, 86; CPMT 1988, 2000; MP PMT 1995; MP PET 1989, 90; Kurukshetra CEE 1998; Roorkee 2000; RPMT 2000] |
| A. | \[HF\] |
| B. | \[HCl\] |
| C. | \[HBr\] |
| D. | \[HI\] |
| Answer» B. \[HCl\] | |
| 5519. |
In which of the following pairs does the first gas bleaches flowers by reduction while the second gas does so by oxidation [Manipal MEE 1995] |
| A. | \[CO\] and \[C{{l}_{2}}\] |
| B. | \[S{{O}_{2}}\] and \[C{{l}_{2}}\] |
| C. | \[{{H}_{2}}\] and \[B{{r}_{2}}\] |
| D. | \[N{{H}_{3}}\] and \[S{{O}_{2}}\] |
| Answer» C. \[{{H}_{2}}\] and \[B{{r}_{2}}\] | |
| 5520. |
The alkali metal halides are soluble in water but \[LiF\] is insoluble because |
| A. | It is amphoteric |
| B. | The \[Li-F\] bond is highly ionic |
| C. | Its lattice energy is high |
| D. | \[L{{i}^{+}}\] ion is least hydrated |
| Answer» D. \[L{{i}^{+}}\] ion is least hydrated | |
| 5521. |
Amongst halogens fluorine is most oxidising because |
| A. | Fluorine has highest electron affinity |
| B. | Fluorine is most electronegative |
| C. | Dissociation energy for fluorine molecule is lowest |
| D. | All are correct |
| Answer» D. All are correct | |
| 5522. |
To purify fluorine gas, fumes of \[HF\] are removed by [MH CET 2002] |
| A. | Solid \[NaF\] |
| B. | \[{{H}_{2}}\]gas |
| C. | Solid \[KH{{F}_{2}}\] |
| D. | None of these |
| Answer» B. \[{{H}_{2}}\]gas | |
| 5523. |
Which halogen does not show variable oxidation state [UPSEAT 2003] |
| A. | \[{{F}_{2}}\] |
| B. | \[C{{l}_{2}}\] |
| C. | \[B{{r}_{2}}\] |
| D. | \[{{I}_{2}}\] |
| Answer» B. \[C{{l}_{2}}\] | |
| 5524. |
Aqua regia is a mixture of [KCET (Med.) 2001] |
| A. | \[3HCl+1HN{{O}_{3}}\] |
| B. | \[{{H}_{3}}P{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\] |
| C. | \[3HN{{O}_{3}}+1HCl\] |
| D. | \[HCl+C{{H}_{3}}COOH\] |
| Answer» B. \[{{H}_{3}}P{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\] | |
| 5525. |
On heating \[NaCl+{{K}_{2}}C{{r}_{2}}{{O}_{7}}+\]conc.\[{{H}_{2}}S{{O}_{4}}\], the gas comes out is [JIPMER 2000] |
| A. | \[{{O}_{2}}\] |
| B. | \[C{{l}_{2}}\] |
| C. | \[CrOC{{l}_{2}}\] |
| D. | \[Cr{{O}_{2}}C{{l}_{2}}\] |
| Answer» E. | |
| 5526. |
Deacon's process is used in the manufacture of [BHU 1979] |
| A. | Bleaching powder |
| B. | Sulphuric acid |
| C. | Nitric acid |
| D. | Chlorine |
| Answer» E. | |
| 5527. |
Which one is least basic [JIPMER 2000] |
| A. | \[B{{I}_{3}}\] |
| B. | \[BB{{r}_{3}}\] |
| C. | \[BC{{l}_{3}}\] |
| D. | \[B{{F}_{3}}\] |
| Answer» E. | |
| 5528. |
Which of the following condition is used to find atomic \[C{{l}_{2}}\] from molecular \[C{{l}_{2}}\] [CPMT 1996] |
| A. | High temperature, high pressure |
| B. | Low temperature, high pressure |
| C. | High temperature, low pressure |
| D. | Low temperature, low pressure |
| Answer» D. Low temperature, low pressure | |
| 5529. |
Which is formed when fluorine react with hot and concentrated sodium hydroxide [CPMT 2000] |
| A. | \[{{O}_{2}}\] |
| B. | \[{{O}_{3}}\] |
| C. | NaO |
| D. | HF |
| Answer» B. \[{{O}_{3}}\] | |
| 5530. |
Amongst \[LiCl,\,RbCl,\,BeC{{l}_{2}}\] and \[MgC{{l}_{2}}\]. Maximum and minimum ionic character will be shown by the compounds [RPMT 1999] |
| A. | \[LiCl,\,\,MgC{{l}_{2}}\] |
| B. | \[RbCl,\,BeC{{l}_{2}}\] |
| C. | \[RbCl,\,MgC{{l}_{2}}\] |
| D. | \[MgC{{l}_{2}},\,BeC{{l}_{2}}\] |
| Answer» C. \[RbCl,\,MgC{{l}_{2}}\] | |
| 5531. |
Chlorine cannot displace [MP PET 1996] |
| A. | Fluorine from \[NaF\] |
| B. | Iodine from \[NaI\] |
| C. | Bromine from \[NaBr\] |
| D. | None of these |
| Answer» B. Iodine from \[NaI\] | |
| 5532. |
\[C{{l}_{2}}\] reacts with \[C{{S}_{2}}\] in presence of \[{{I}_{2}}\] catalyst to form [AFMC 1995] |
| A. | \[CHC{{l}_{3}}\] |
| B. | \[CC{{l}_{4}}\] |
| C. | \[{{C}_{2}}{{H}_{5}}Cl\] |
| D. | \[{{C}_{2}}{{H}_{6}}\] |
| Answer» C. \[{{C}_{2}}{{H}_{5}}Cl\] | |
| 5533. |
Which of the following halides is least stable and has doubtful existence [IIT 1996] |
| A. | \[C{{I}_{4}}\] |
| B. | \[Ge{{I}_{4}}\] |
| C. | \[Sn{{I}_{4}}\] |
| D. | \[Pb{{I}_{4}}\] |
| Answer» E. | |
| 5534. |
Concentrated \[{{H}_{2}}S{{O}_{4}}\] cannot be used to prepare \[HBr\] from \[NaBr\], because it [IIT 1995] |
| A. | Reduces \[HBr\] |
| B. | Oxidises \[HBr\] |
| C. | Disproportionates \[HBr\] |
| D. | Reacts slowly with \[NaBr\] |
| Answer» C. Disproportionates \[HBr\] | |
| 5535. |
Which one of the following pairs of substances when mixed, produces chlorine gas at room temperature [IIT 1995] |
| A. | \[NaCl\] and \[Mn{{O}_{2}}\] |
| B. | \[NaCl\] and \[HN{{O}_{3}}\](conc.) |
| C. | \[NaCl\] and \[{{H}_{2}}S{{O}_{4}}\] (conc.) |
| D. | \[HCl\] (conc.) and \[KMn{{O}_{4}}\] |
| Answer» E. | |
| 5536. |
Which of the following has the lowest solubility [Roorkee 2000] |
| A. | \[Ca{{F}_{2}}\] |
| B. | \[CaC{{l}_{2}}\] |
| C. | \[CaB{{r}_{2}}\] |
| D. | \[Ca{{I}_{2}}\] |
| Answer» B. \[CaC{{l}_{2}}\] | |
| 5537. |
When \[C{{l}_{2}}\] gas is passed through hot and conc. solution of \[KOH\], following compound is formed [CPMT 1971, 79; BVP 2003] |
| A. | \[KCl\] |
| B. | \[KCl{{O}_{3}}\] |
| C. | \[KCl{{O}_{2}}\] |
| D. | \[KCl{{O}_{4}}\] |
| Answer» C. \[KCl{{O}_{2}}\] | |
| 5538. |
Which of the following reaction is not feasible [CBSE PMT PMT 2002] |
| A. | \[2KI+B{{r}_{2}}\to 2KBr+{{I}_{2}}\] |
| B. | \[2{{H}_{2}}O+2{{F}_{2}}\to 2HF+{{O}_{2}}\] |
| C. | \[2KBr+{{I}_{2}}\to 2KI+B{{r}_{2}}\] |
| D. | \[2KBr+C{{l}_{2}}\to 2KCl+B{{r}_{2}}\] |
| Answer» D. \[2KBr+C{{l}_{2}}\to 2KCl+B{{r}_{2}}\] | |
| 5539. |
Bromine water reacts with \[S{{O}_{2}}\] to form [AFMC 1995] |
| A. | \[{{H}_{2}}O\] and \[HBr\] |
| B. | \[{{H}_{2}}S{{O}_{4}}\] and \[HBr\] |
| C. | \[HBr\] and \[S\] |
| D. | \[S\] and \[{{H}_{2}}O\] |
| Answer» C. \[HBr\] and \[S\] | |
| 5540. |
Which is not oxidised by \[Mn{{O}_{2}}\] [DCE 2003] |
| A. | F |
| B. | Cl |
| C. | \[{{I}_{2}}\] |
| D. | \[I\] |
| Answer» B. Cl | |
| 5541. |
The bleaching action of bleaching powder is due to the formation of [Roorkee 1999] |
| A. | \[CaC{{l}_{2}}\] |
| B. | \[CaS{{O}_{4}}\] |
| C. | \[HClO\] |
| D. | \[Ca{{(Cl{{O}_{3}})}_{2}}\] |
| Answer» B. \[CaS{{O}_{4}}\] | |
| 5542. |
Fluorine with dilute NaOH gives [MH CET 2000] |
| A. | \[O{{F}_{2}}\] |
| B. | \[{{O}_{3}}\] |
| C. | \[{{O}_{2}}\] |
| D. | \[HF\] and \[{{O}_{2}}\] |
| Answer» B. \[{{O}_{3}}\] | |
| 5543. |
The compound which forms a dative bond with ammonia [JIPMER 2001] |
| A. | \[CC{{l}_{4}}\] |
| B. | \[BC{{l}_{3}}\] |
| C. | \[MgC{{l}_{2}}\] |
| D. | \[NaCl\] |
| Answer» C. \[MgC{{l}_{2}}\] | |
| 5544. |
Bleaching powder loses its power on keeping for a long time because [KCET 2000] |
| A. | It changes into calcium hypochlorate |
| B. | It changes into calcium chloride and calcium hydroxide |
| C. | It absorbs moisture |
| D. | It changes into calcium chloride and calcium chlorate |
| Answer» E. | |
| 5545. |
Bleaching powder is obtained by treating chlorine with [Pb. PMT 1999] |
| A. | \[CaO\] |
| B. | \[CaC{{O}_{3}}\] |
| C. | \[CaS{{O}_{4}}\] |
| D. | \[Ca{{(OH)}_{2}}\] |
| Answer» E. | |
| 5546. |
Acid strength of oxy acids of chlorine follows the order [AIIMS 2000; CBSE PMT 2005] |
| A. | \[HClO<HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}\] |
| B. | \[HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}<HClO\] |
| C. | \[HCl{{O}_{4}}<HCl{{O}_{3}}<HClO<HCl{{O}_{2}}\] |
| D. | None of these |
| Answer» B. \[HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}<HClO\] | |
| 5547. |
\[B{{r}_{2}}\] gas turns starch iodide paper [CPMT 1987; AFMC 1987; AMU 1999] |
| A. | Blue |
| B. | Red |
| C. | Colourless |
| D. | Yellow |
| Answer» B. Red | |
| 5548. |
Which of the following silver compounds finds maximum use in photography [JIPMER 1999] |
| A. | \[AgCl\] |
| B. | \[AgBr\] |
| C. | \[AgI\] |
| D. | \[AgN{{O}_{3}}\] |
| Answer» C. \[AgI\] | |
| 5549. |
The weakest acid HX (X = F, Cl, Br, I) is [BHU 2000] |
| A. | \[HF\] |
| B. | HCl |
| C. | \[HBr\] |
| D. | HI |
| Answer» B. HCl | |
| 5550. |
Chlorine is liberated, when we heat [AFMC 1998] |
| A. | \[KMn{{O}_{4}}+NaCl\] |
| B. | \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+Mn{{O}_{2}}\] |
| C. | \[P{{b}_{2}}{{(N{{O}_{3}})}_{4}}+Mn{{O}_{2}}\] |
| D. | \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+HCl\] |
| Answer» E. | |