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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.
| 3201. |
Least chemical activity is shown by [CPMT 1973, 79] |
| A. | Nitrogen |
| B. | Argon |
| C. | Methane |
| D. | Ammonia |
| Answer» C. Methane | |
| 3202. |
The colour discharge tubes for advertisement mainly contain [CPMT 1980, 89; MP PET 2002] |
| A. | Argon |
| B. | Neon |
| C. | Helium |
| D. | Xenon |
| Answer» C. Helium | |
| 3203. |
The electronic configuration of neon is [CPMT 1974, 80, 81; DPMT 1982; MNR 1995] |
| A. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{2}}\] |
| B. | \[\] \[2{{s}^{2}}2{{p}^{6}}\] |
| C. | \[1{{s}^{2}},\] \[2{{s}^{2}}\] |
| D. | \[1{{s}^{2}}\] |
| Answer» C. \[1{{s}^{2}},\] \[2{{s}^{2}}\] | |
| 3204. |
Among the fluorides below, the one which does not exist is [NCERT 1977; CPMT 1988] |
| A. | \[Xe{{F}_{4}}\] |
| B. | \[He{{F}_{4}}\] |
| C. | \[S{{F}_{4}}\] |
| D. | \[C{{F}_{4}}\] |
| Answer» C. \[S{{F}_{4}}\] | |
| 3205. |
Nuclear fusion produces |
| A. | Argon |
| B. | Deuterium |
| C. | Helium |
| D. | Krypton |
| Answer» D. Krypton | |
| 3206. |
Which of the following is monoatomic [NCERT 1976, 77; CPMT 1983, 86, 90] |
| A. | Nitrogen |
| B. | Fluorine |
| C. | Neon |
| D. | Oxygen |
| Answer» D. Oxygen | |
| 3207. |
Which of the following gases exist more abundantly in nature than the others [BHU 1982; DPMT 1982,02; CPMT 1983, 89; EAMCET 1993; Manipal MEE 1995; MHCET 2003] |
| A. | Helium |
| B. | Neon |
| C. | Argon |
| D. | Krypton |
| Answer» D. Krypton | |
| 3208. |
The noble gas which forms maximum number of compounds is [NCERT 1976; BHU 1980; CPMT 1982, 91; AMU 1985; DPMT 1996; MP PMT 2001; Pb.CET 2003] |
| A. | \[Ar\] |
| B. | \[He\] |
| C. | \[Xe\] |
| D. | \[Ne\] |
| Answer» D. \[Ne\] | |
| 3209. |
Deep sea divers used to respirate is a mixture of |
| A. | Oxygen and argon |
| B. | Oxygen and helium |
| C. | Oxygen and nitrogen |
| D. | Oxygen and hydrogen |
| Answer» C. Oxygen and nitrogen | |
| 3210. |
Which of the following outer electronic configuration represents argon [DPMT 1982; CPMT 1976; NCERT 1987;Kurukshetra CEE 1998] |
| A. | \[n{{s}^{2}}\] |
| B. | \[n{{s}^{2}}n{{p}^{6}}\] |
| C. | \[n{{s}^{2}}n{{p}^{5}}\] |
| D. | \[n{{s}^{2}}n{{p}^{4}}\] |
| Answer» C. \[n{{s}^{2}}n{{p}^{5}}\] | |
| 3211. |
Which of the nitrates on strong heating leaves the metal as the residue [KCET 1990] |
| A. | \[AgN{{O}_{3}}\] |
| B. | \[Pb{{(N{{O}_{3}})}_{2}}\] |
| C. | \[Cu{{(N{{O}_{3}})}_{2}}\] |
| D. | \[Al{{(N{{O}_{3}})}_{3}}\] |
| Answer» B. \[Pb{{(N{{O}_{3}})}_{2}}\] | |
| 3212. |
When \[AgN{{O}_{3}}\] is heated strongly, the products formed are [Roorkee 1990] |
| A. | \[NO\] and \[N{{O}_{2}}\] |
| B. | \[N{{O}_{2}}\] and \[{{O}_{2}}\] |
| C. | \[N{{O}_{2}}\] and \[{{N}_{2}}O\] |
| D. | \[NO\] and \[{{O}_{2}}\] |
| Answer» C. \[N{{O}_{2}}\] and \[{{N}_{2}}O\] | |
| 3213. |
The reddish brown coloured gas formed when nitric oxide is oxidised by air is [IIT 1979] |
| A. | \[{{N}_{2}}{{O}_{5}}\] |
| B. | \[{{N}_{2}}{{O}_{4}}\] |
| C. | \[N{{O}_{2}}\] |
| D. | \[{{N}_{2}}{{O}_{3}}\] |
| Answer» D. \[{{N}_{2}}{{O}_{3}}\] | |
| 3214. |
Which of the following oxides of nitrogen is neutral [CPMT 1988] |
| A. | \[{{N}_{2}}{{O}_{5}}\] |
| B. | \[{{N}_{2}}{{O}_{3}}\] |
| C. | \[{{N}_{2}}{{O}_{4}}\] |
| D. | \[{{N}_{2}}O\] |
| Answer» E. | |
| 3215. |
Of the following, which has three electron bond in its structure [CPMT 1986] |
| A. | Nitrous oxide |
| B. | Nitric oxide |
| C. | Dinitrogen trioxide |
| D. | Nitrogen pentoxide |
| Answer» C. Dinitrogen trioxide | |
| 3216. |
When lightning flash is produced, which gas may form [EAMCET 1992; AFMC 1989] |
| A. | Nitrous oxide |
| B. | Nitrogen dioxide |
| C. | Dinitrogen pentoxide |
| D. | Nitric oxide |
| Answer» E. | |
| 3217. |
Nitric oxide is prepared by the action of \[HN{{O}_{3}}\] on [AFMC 1990] |
| A. | \[Fe\] |
| B. | \[Cu\] |
| C. | \[Zn\] |
| D. | \[Sn\] |
| Answer» C. \[Zn\] | |
| 3218. |
Nitrogen dioxide is released by heating [AFMC 1992] |
| A. | \[Pb{{(N{{O}_{3}})}_{2}}\] |
| B. | \[KN{{O}_{3}}\] |
| C. | \[NaN{{O}_{2}}\] |
| D. | \[NaN{{O}_{3}}\] |
| Answer» B. \[KN{{O}_{3}}\] | |
| 3219. |
On strongly heating \[Pb{{(N{{O}_{3}})}_{2}}\] crystals, the gas formed is [NCERT 1980; CPMT 1997] |
| A. | \[N{{O}_{2}}\] |
| B. | \[{{O}_{2}}\] |
| C. | \[N{{O}_{2}}+{{O}_{2}}\] |
| D. | \[NO\] |
| Answer» D. \[NO\] | |
| 3220. |
Which of the following is a true acidic anhydride [NCERT 1977] |
| A. | \[CO\] |
| B. | \[NO\] |
| C. | \[Cl{{O}_{2}}\] |
| D. | \[{{N}_{2}}{{O}_{5}}\] |
| Answer» E. | |
| 3221. |
Which of the following is not correct for \[{{N}_{2}}O\] [CPMT 1984] |
| A. | It is called laughing gas |
| B. | It is nitrous oxide |
| C. | It is not a linear molecule |
| D. | It is least reactive in all oxides of nitrogen |
| Answer» D. It is least reactive in all oxides of nitrogen | |
| 3222. |
Nitrogen (I) oxide is produced by [IIT 1989] |
| A. | Thermal decomposition of ammonium nitrate |
| B. | Disproportionation of \[{{N}_{2}}{{O}_{4}}\] |
| C. | Thermal decomposition of ammonium nitrite |
| D. | Interaction of hydroxyl amine and nitrous acid |
| Answer» E. | |
| 3223. |
Laughing gas is prepared by heating [EAMCET 1980] |
| A. | \[N{{H}_{4}}Cl\] |
| B. | \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] |
| C. | \[N{{H}_{4}}Cl+NaN{{O}_{3}}\] |
| D. | \[N{{H}_{4}}N{{O}_{3}}\] |
| Answer» E. | |
| 3224. |
The element which is essential in nitrogen fixation is [NCERT 1981] |
| A. | Zinc |
| B. | Copper |
| C. | Molybdenum |
| D. | Boron |
| Answer» D. Boron | |
| 3225. |
Which statement is not correct for nitrogen [AIIMS 1991] |
| A. | It has a small size |
| B. | It does not readily react with \[{{O}_{2}}\] |
| C. | It is a typical non-metal |
| D. | d-orbitals are available for bonding |
| Answer» E. | |
| 3226. |
The cyanide ion, \[C{{N}^{-}}\] and \[{{N}_{2}}\] are isoelectronic. But in contrast to \[C{{N}^{-}},\] \[{{N}_{2}}\] is chemically inert because of [IIT 1992] |
| A. | Low bond energy |
| B. | Absence of bond polarity |
| C. | Unsymmetrical electron distribution |
| D. | Presence of more number of electrons in bonding orbitals |
| Answer» E. | |
| 3227. |
Nitrogen is relatively inactive element because [CBSE PMT 1992] |
| A. | Its atom has a stable electronic configuration |
| B. | It has low atomic radius |
| C. | Its electronegativity is fairly high |
| D. | Dissociation energy of its molecule is fairly high |
| Answer» E. | |
| 3228. |
Phosphine is prepared by the reaction of [MP PET/PMT 1988] |
| A. | \[P\] and \[{{H}_{2}}S{{O}_{4}}\] |
| B. | \[P\] and \[NaOH\] |
| C. | \[P\] and \[{{H}_{2}}S\] |
| D. | \[P\] and \[HN{{O}_{3}}\] |
| Answer» C. \[P\] and \[{{H}_{2}}S\] | |
| 3229. |
Pure nitrogen can be prepared from [KCET 1991; AFMC 1993; AMU 1985] |
| A. | \[N{{H}_{4}}OH\] |
| B. | \[C{{a}_{3}}{{N}_{2}}\] |
| C. | \[N{{H}_{4}}N{{O}_{2}}\] |
| D. | \[Ba{{(N{{O}_{3}})}_{2}}\] |
| Answer» D. \[Ba{{(N{{O}_{3}})}_{2}}\] | |
| 3230. |
Pure \[{{N}_{2}}\] gas is obtained from [CBSE PMT 1991] |
| A. | \[N{{H}_{3}}+NaN{{O}_{2}}\] |
| B. | \[N{{H}_{4}}Cl+NaN{{O}_{2}}\] |
| C. | \[{{N}_{2}}O+Cu\] |
| D. | \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\] |
| Answer» C. \[{{N}_{2}}O+Cu\] | |
| 3231. |
Of the following, non-existent compound is [NCERT 1975, 79] |
| A. | \[P{{H}_{4}}I\] |
| B. | \[A{{s}_{2}}{{O}_{3}}\] |
| C. | \[SbC{{l}_{2}}\] |
| D. | \[A{{s}_{2}}{{H}_{3}}\] |
| Answer» D. \[A{{s}_{2}}{{H}_{3}}\] | |
| 3232. |
Of the following, the most acidic is [EAMCET 1980] |
| A. | \[A{{s}_{2}}{{O}_{3}}\] |
| B. | \[{{P}_{2}}{{O}_{3}}\] |
| C. | \[S{{b}_{2}}{{O}_{3}}\] |
| D. | \[B{{i}_{2}}{{O}_{3}}\] |
| Answer» C. \[S{{b}_{2}}{{O}_{3}}\] | |
| 3233. |
Which is the most explosive [BHU 1984; Roorkee 1989; AIIMS 1996; MP PMT 1985, 2001] |
| A. | \[NC{{l}_{3}}\] |
| B. | \[PC{{l}_{3}}\] |
| C. | \[AsC{{l}_{3}}\] |
| D. | All of these |
| Answer» B. \[PC{{l}_{3}}\] | |
| 3234. |
Which has the lowest boiling point [CBSE PMT 1989] |
| A. | \[N{{H}_{3}}\] |
| B. | \[P{{H}_{3}}\] |
| C. | \[As{{H}_{3}}\] |
| D. | \[Sb{{H}_{3}}\] |
| Answer» C. \[As{{H}_{3}}\] | |
| 3235. |
The most stable hydride is [EAMCET 1988] |
| A. | \[N{{H}_{3}}\] |
| B. | \[P{{H}_{3}}\] |
| C. | \[As{{H}_{3}}\] |
| D. | \[Sb{{H}_{3}}\] |
| Answer» B. \[P{{H}_{3}}\] | |
| 3236. |
Which does not form complex [CPMT 1986] |
| A. | \[N\] |
| B. | \[P\] |
| C. | \[As\] |
| D. | \[Bi\] |
| Answer» B. \[P\] | |
| 3237. |
Which of the following elements of group VA does not show allotropy [CPMT 1980] |
| A. | \[N\] |
| B. | \[Bi\] |
| C. | \[P\] |
| D. | As |
| Answer» C. \[P\] | |
| 3238. |
Which of the following is a tetrabasic acid [CPMT 1988] |
| A. | Orthophosphorus acid |
| B. | Orthophosphoric acid |
| C. | Metaphosphoric acid |
| D. | Pyrophosphoric acid |
| Answer» E. | |
| 3239. |
N, P, As, Sb, Bi elements belong to [DPMT 1982] |
| A. | VA group |
| B. | IVA group |
| C. | VIIA group |
| D. | VB group |
| Answer» B. IVA group | |
| 3240. |
V-A group precipitate was dissolved in \[HN{{O}_{3}}\] and treated with excess of \[N{{H}_{4}}OH\]. It gives a white ppt. because of |
| A. | \[Cu{{(OH)}_{2}}\] |
| B. | \[Cd{{(OH)}_{2}}\] |
| C. | \[Bi{{(OH)}_{3}}\] |
| D. | \[Hg{{(OH)}_{2}}\] |
| Answer» D. \[Hg{{(OH)}_{2}}\] | |
| 3241. |
On adding water to \[BiC{{l}_{3}}\] solution in \[HCl\], the compound produced is |
| A. | \[B{{i}_{2}}{{O}_{3}}\] |
| B. | \[Bi{{(OH)}_{3}}\] |
| C. | \[BiOCl\] |
| D. | \[BiOC{{l}_{2}}\] |
| Answer» D. \[BiOC{{l}_{2}}\] | |
| 3242. |
Which of the following substances is used as a fertilizer |
| A. | \[{{K}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\] |
| B. | \[Ca{{({{H}_{3}}P{{O}_{4}})}_{2}}{{H}_{2}}O+CaS{{O}_{4}}\] |
| C. | \[NaAl{{O}_{2}}\] |
| D. | \[Ca{{C}_{2}}\] |
| Answer» C. \[NaAl{{O}_{2}}\] | |
| 3243. |
Electrolysis temperature is maximum for [MP PET 1990] |
| A. | \[As{{H}_{3}}\] |
| B. | \[N{{H}_{3}}\] |
| C. | \[P{{H}_{3}}\] |
| D. | \[Sb{{H}_{3}}\] |
| Answer» C. \[P{{H}_{3}}\] | |
| 3244. |
Which of the following is not hydrolysed [DPMT 2005] |
| A. | \[AsC{{l}_{3}}\] |
| B. | \[P{{F}_{3}}\] |
| C. | \[SbC{{l}_{3}}\] |
| D. | \[N{{F}_{3}}\] |
| Answer» E. | |
| 3245. |
The basic character of hydrides of the V-group elements decreases in the order [CBSE PMT 1996] |
| A. | \[Sb{{H}_{3}}>P{{H}_{3}}>As{{H}_{3}}>N{{H}_{3}}\] |
| B. | \[N{{H}_{3}}>Sb{{H}_{3}}>P{{H}_{3}}>As{{H}_{3}}\] |
| C. | \[N{{H}_{3}}>P{{H}_{3}}>As{{H}_{3}}>Sb{{H}_{3}}\] |
| D. | \[Sb{{H}_{3}}>As{{H}_{3}}>P{{H}_{3}}>N{{H}_{3}}\] |
| Answer» D. \[Sb{{H}_{3}}>As{{H}_{3}}>P{{H}_{3}}>N{{H}_{3}}\] | |
| 3246. |
Each of the following is true for white and red phosphorus except that they [CBSE PMT 1989] |
| A. | Are both soluble in \[C{{S}_{2}}\] |
| B. | Can be oxidised by heating in air |
| C. | Consists of same kind of atoms |
| D. | Can be converted into one another |
| Answer» B. Can be oxidised by heating in air | |
| 3247. |
Which of the following oxide is least acidic [MP PMT 1990; CBSE PMT 1996] |
| A. | \[{{P}_{4}}{{O}_{6}}\] |
| B. | \[{{P}_{4}}{{O}_{10}}\] |
| C. | \[A{{s}_{4}}{{O}_{6}}\] |
| D. | \[A{{s}_{4}}{{O}_{19}}\] |
| Answer» D. \[A{{s}_{4}}{{O}_{19}}\] | |
| 3248. |
In which compound, the oxidation state of nitrogen is -1 [MP PMT 1989] |
| A. | \[NO\] |
| B. | \[{{N}_{2}}O\] |
| C. | \[N{{H}_{2}}OH\] |
| D. | \[{{N}_{2}}{{H}_{4}}\] |
| Answer» D. \[{{N}_{2}}{{H}_{4}}\] | |
| 3249. |
In which compound, the oxidation state of phosphorus is+4 [MP PET 1991] |
| A. | \[{{P}_{4}}{{O}_{11}}\] |
| B. | \[{{P}_{4}}{{O}_{8}}\] |
| C. | \[PC{{l}_{5}}\] |
| D. | \[NC{{l}_{5}}\] |
| Answer» C. \[PC{{l}_{5}}\] | |
| 3250. |
Which oxide do not act as a reducing agent [MP PET 1990] |
| A. | \[NO\] |
| B. | \[N{{O}_{2}}\] |
| C. | \[{{N}_{2}}O\] |
| D. | \[{{N}_{2}}{{O}_{5}}\] |
| Answer» E. | |