Explore topic-wise MCQs in Joint Entrance Exam - Main (JEE Main).

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.

3101.

\[_{6}{{C}^{14}}\] is formed from \[_{7}{{N}^{14}}\] in the upper atmosphere by the action of the fundamental particle      [Orissa JEE 2002]

A.                 Positron              
B.                 Neutron
C.                 Electron              
D.                 Proton
Answer» C.                 Electron              
3102.

In the nuclear reaction \[_{12}M{{g}^{24}}{{+}_{2}}H{{e}^{4}}{{=}_{0}}{{n}^{1}}+?\] The product nucleus is          [BHU 1987]

A.                 \[_{13}A{{l}^{27}}\]        
B.                 \[_{14}S{{i}^{27}}\]
C.                 \[_{13}A{{l}^{28}}\]        
D.                 \[_{12}M{{g}^{25}}\]
Answer» C.                 \[_{13}A{{l}^{28}}\]        
3103.

A deutron contains         [NCERT 1982; CPMT 1994]

A.                 A neutron and a positron
B.                 A neutron and a proton
C.                 A neutron and two protons
D. A proton and two neutrons
Answer» C.                 A neutron and two protons
3104.

The charge on positron is equal to the charge on which one of the following        [NCERT 1977]

A.                 Proton 
B.                 Electron
C.                 \[\alpha \]-particle         
D.                 Neutron
Answer» B.                 Electron
3105.

An electrically charged atom or a group of atoms is known as                      [BHU 1979]

A.                 A meson             
B.                 A proton
C.                 An ion  
D.                 A cyclotron
Answer» D.                 A cyclotron
3106.

Positronium is the name given to an atom-like combination formed between     [NCERT 1980; JIPMER 1991]

A.                 A positron and a proton
B.                 A positron and a neutron
C.                 A positron and \[\alpha \]-particle
D.                 A positron and an electron
Answer» E.
3107.

The reaction \[_{5}{{B}^{8}}{{\to }_{4}}B{{e}^{8}}{{+}_{1}}{{e}^{0}}\]  is due to   [MP PMT 1991]

A.                 Loss of \[\alpha \]-particles        
B.                 Loss of \[\beta \]-particles
C.                 Loss of positron               
D.                 Electron loss
Answer» D.                 Electron loss
3108.

A nuclear reaction must be balanced in terms of

A.                 Only energy      
B.                 Only mass
C.                 Mass and energy            
D.                 None of these
Answer» D.                 None of these
3109.

Hydrogen  and deuterium differ in           [CPMT 1980]

A.                 Reactivity with oxygen
B.                 Reactivity with chlorine
C.                 Melting point    
D.                 Reducing action
Answer» D.                 Reducing action
3110.

The radionucleide \[_{90}^{234}Th\] undergoes two successive \[\beta \]-decays followed by one \[\alpha \]-decay. The atomic number and the mass number respectively of the resulting radionucleide are                      [AIEEE 2003]

A.                 92 and 234          
B.                 94 and 230
C.                 90 and 230          
D.                 92 and 230
Answer» D.                 92 and 230
3111.

Nucleons are     [CPMT 1982]

A.                 Protons and electrons
B.                 Protons and neutrons
C.                 Electrons and neutrons
D.                 Electrons, protons and neutrons
Answer» C.                 Electrons and neutrons
3112.

Correct formula of potassium ferrocyanide is [CBSE PMT 1988]

A. \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\]
B. \[{{K}_{2}}\left[ Fe{{\left( CN \right)}_{6}} \right]{{H}_{2}}O\]
C. \[{{K}_{3}}\left[ Fe{{\left( CN \right)}_{6}} \right]\]
D. None of these
Answer» B. \[{{K}_{2}}\left[ Fe{{\left( CN \right)}_{6}} \right]{{H}_{2}}O\]
3113.

The formula of sodium nitroprusside is [AIIMS 1992]

A. \[N{{a}_{4}}\left[ Fe{{\left( CN \right)}_{5}}NOS \right]\]
B. \[N{{a}_{2}}\left[ Fe{{\left( CN \right)}_{5}}NO \right]\]
C. \[NaFe\left[ Fe{{\left( CN \right)}_{6}} \right]\]
D. \[N{{a}_{2}}\left[ Fe{{\left( CN \right)}_{6}}N{{O}_{2}} \right]\]
Answer» C. \[NaFe\left[ Fe{{\left( CN \right)}_{6}} \right]\]
3114.

Correct formula of diammine silver (I) chloride is

A. \[Ag(N{{H}_{3}})Cl\]
B. \[Ag(N{{H}_{2}})Cl\]
C. \[\left[ Ag{{(N{{H}_{3}})}_{2}} \right]Cl\]
D. \[\left[ Ag{{(N{{H}_{2}})}_{2}} \right]Cl\]
Answer» D. \[\left[ Ag{{(N{{H}_{2}})}_{2}} \right]Cl\]
3115.

Which compound is zero valent metal complex  [KCET 2005]

A. \[[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}\]
B. \[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\]
C. \[[Ni{{(CO)}_{4}}]\]
D. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
Answer» D. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
3116.

The IUPAC name of the coordination compound \[{{K}_{3}}[Fe{{(CN)}_{6}}]\] is [AIEEE 2005]

A. Potassium hexacyanoferrate (II)
B. Potassium hexacyanoferrate (III)
C. Potassium hexacyanoiron (II)
D. Tripotassium hexacyanoiron (II)
Answer» C. Potassium hexacyanoiron (II)
3117.

The IUPAC name of \[{{K}_{2}}[Cr{{(CN)}_{2}}{{O}_{2}}{{(O)}_{2}}(N{{H}_{3}})]\] is [DCE 2003]

A. Potassium ammine dicyano dioxoperoxochromate (VI)
B. Potassium ammine cyano peroxo dioxo chromium (VI)
C. Potassium ammine cyano peroxo dioxo chromiun (VI)
D. Potassium ammine cyano peroxo dioxo chromatic (IV)
Answer» B. Potassium ammine cyano peroxo dioxo chromium (VI)
3118.

The IUPAC name of \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\] is [Pb. CET 2001]

A. Hexamminechromium (VI) ion
B. Hexamminechromium (III) ion
C. Hexamminechromium (II) ion
D. Hexamminechloride
Answer» C. Hexamminechromium (II) ion
3119.

IUPAC name of \[[Co{{(N{{H}_{3}})}_{5}}N{{O}_{2}}]C{{l}_{2}}\] [Pb. CET 2000]

A. Pentamminenitrocobalt (III) chloride
B. Pentamminenitrosocobalt (III) chloride
C. Pentamminenitrocobalt (II) chloride
D. None of these
Answer» B. Pentamminenitrosocobalt (III) chloride
3120.

The chemical formula of diammine silver (I) chloride is [BHU 2004]

A. \[[Ag(N{{H}_{3}})]Cl\]
B. \[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
C. \[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
D. \[[Ag{{(N{{H}_{4}})}_{2}}]Cl\]
Answer» C. \[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
3121.

IUPAC name for \[K\left[ Ag{{\left( CN \right)}_{2}} \right]\] is

A. Potassium argentocyanide
B. Potassium silver cyanide
C. Potassium dicyanoargentate (I)
D. Potassium dicyanosilver (II)
Answer» D. Potassium dicyanosilver (II)
3122.

What is the structural formula of lithium tetrahydridoaluminate        [MP PMT 2003]

A. \[Al[Li{{H}_{4}}]\]
B. \[A{{l}_{2}}{{[Li{{H}_{4}}]}_{3}}\]
C. \[Li[Al{{H}_{4}}]\]
D. \[Li{{[Al{{H}_{4}}]}_{2}}\]
Answer» D. \[Li{{[Al{{H}_{4}}]}_{2}}\]
3123.

The oxidation number of Pt in \[{{[Pt({{C}_{2}}{{H}_{4}})C{{l}_{3}}]}^{-}}\] is [UPSEAT 1999, 01]

A. \[+1\]
B. \[+2\]
C. \[+3\]
D. \[+4\]
Answer» C. \[+3\]
3124.

The complex compound \[\left[ Co{{\left( N{{H}_{3}} \right)}_{3}}N{{O}_{2}}ClCN \right]\] is named as [MP PMT 1996]

A. Chlorocyanonitrotriammine cobalt (III)
B. Nitrochlorocyanotriammine cobalt (III)
C. Cyanonitrochlorotriammine cobalt (III)
D. Triamminenitrochlorocyano cobalt (III)
Answer» B. Nitrochlorocyanotriammine cobalt (III)
3125.

In which of the following compounds transition metal has zero oxidation state [CBSE PMT 1999]

A. \[Cr{{O}_{5}}\]
B. \[N{{H}_{2}}.N{{H}_{2}}\]
C. \[NOCl{{O}_{4}}\]
D. \[\left[ Fe{{\left( CO \right)}_{5}} \right]\]
Answer» B. \[N{{H}_{2}}.N{{H}_{2}}\]
3126.

The valency of cuprammonium ion is

A. 4
B. 2
C. -2
D. -4
Answer» C. -2
3127.

The value of x which appears in the complex \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{x}}\] is

A. 2
B. -2
C. 0
D.  4
Answer» C. 0
3128.

The formula of potassiumdicyano bis (oxalato) nickelate (II) is

A. \[{{K}_{4}}\left[ Ni{{\left( CN \right)}_{2}}{{(Ox)}_{2}} \right]\]
B. \[{{K}_{3}}\left[ N{{i}_{2}}[N{{i}_{2}}{{(CN)}_{2}}{{(Ox)}_{2}} \right]\]
C. \[K\left[ Ni(CN){{(Ox)}_{2}} \right]\]
D. \[{{K}_{2}}\left[ Ni{{(CN)}_{2}}{{(Ox)}_{2}} \right]\]
Answer» B. \[{{K}_{3}}\left[ N{{i}_{2}}[N{{i}_{2}}{{(CN)}_{2}}{{(Ox)}_{2}} \right]\]
3129.

Dichloro diammine platinum (II) complex has the formula [MP PMT 1997]

A. \[Pt[C{{l}_{2}}{{(N{{H}_{3}})}_{2}}]\]
B. \[Pt[R.{{(N{{H}_{2}})}_{2}}]C{{l}_{2}}\]
C. \[[PtC{{l}_{2}}{{(N{{H}_{3}})}_{2}}]\]
D. \[[Pt.R.{{(N{{H}_{2}})}_{2}}]C{{l}_{2}}\]
Answer» D. \[[Pt.R.{{(N{{H}_{2}})}_{2}}]C{{l}_{2}}\]
3130.

The formula of dichloro bis (urea) copper (II) is [CBSE PMT 1997]

A. \[\left[ Cu\{O=C{{(N{{H}_{2}})}_{2}}\}C{{l}_{2}} \right]\]
B. \[\left[ CuC{{l}_{2}}{{\{O=C{{(N{{H}_{2}})}_{2}}\}}_{2}} \right]\]
C. \[\left[ Cu\{O=C{{(N{{H}_{2}})}_{2}}\}Cl \right]Cl\]
D. \[\left[ CuC{{l}_{2}} \right]\{O=C{{(N{{H}_{2}})}_{2}}{{H}_{2}}\}\]
Answer» C. \[\left[ Cu\{O=C{{(N{{H}_{2}})}_{2}}\}Cl \right]Cl\]
3131.

IUPAC name of \[\left[ Co{{\left( N{{H}_{3}} \right)}_{3}}{{\left( {{H}_{2}}O \right)}_{2}}Cl \right]\] \[C{{l}_{2}}\] is [MP PET 1994]

A. Diaquachlorodiammine cobalt (III) chloride
B. Triamminediaquachloro cobalt (III) chloride
C. Chlorodiamminediaqua cobalt (III) chloride
D. Diamminediaquachloro cobalt (II) chloride
Answer» C. Chlorodiamminediaqua cobalt (III) chloride
3132.

The charge on \[{{[Ag{{(CN)}_{2}}]}^{-}}\] complex is [AIIMS 2001]

A. \[-1\]
B. \[+1\]
C. \[+2\]
D. \[+3\]
Answer» B. \[+1\]
3133.

The I.U.P.A.C. name of \[{{K}_{3}}[Ir{{({{C}_{2}}{{O}_{4}})}_{3}}]\] is   [MP PMT 2001]

A. Potassium tri oxalato iridium (III)
B. Potassium tri oxalato iridate (III)
C. Potassium tris (oxalato) iridium (III)
D. Potassium tris (oxalato) iridate (III)
Answer» C. Potassium tris (oxalato) iridium (III)
3134.

IUPAC name of \[{{K}_{3}}\left[ Al{{\left( {{C}_{2}}{{O}_{4}} \right)}_{3}} \right]\] is called [MP PMT 1993, 02, 03]

A. Potassium alumino oxalato
B. Potassium aluminium (III) trioxalate
C. Potassium trioxalato aluminate (III)
D. Potassium trioxalato aluminate (IV)
Answer» D. Potassium trioxalato aluminate (IV)
3135.

The proper name for \[{{K}_{2}}{{[PtCl]}_{6}}\] is [MH CET 2002]

A. Potassium platinum hexachloride
B. Potassium hexachloro platinum IV
C. Potassium hexachloro platinate IV
D. Potassium hexachloro platinum
Answer» C. Potassium hexachloro platinate IV
3136.

Which complexes have zero oxidation state

A. Carbonyl
B. Ferrocyanide
C. Amine
D. Cyanide
Answer» B. Ferrocyanide
3137.

Oxidation state of Fe in \[{{K}_{3}}[Fe{{(CN)}_{6}}]\] [RPMT 2002]

A. 2
B. 3
C. 0
D. None of these
Answer» C. 0
3138.

Which of the following is wrong statement [BHU 2003]

A. \[Ni{{(CO)}_{4}}\] has oxidation number + 4 for Ni
B. \[Ni{{(CO)}_{4}}\] has zero oxidation number for Ni
C. Ni is metal
D. CO is gas
Answer» B. \[Ni{{(CO)}_{4}}\] has zero oxidation number for Ni
3139.

Pick out the complex compound in which the  central metal atom obeys EAN rule strictly [KCET 2003]

A. \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
B. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
C. \[[Cr{{({{H}_{2}}O)}_{6}}]\,C{{l}_{3}}\]
D. \[[Cu{{(N{{H}_{3}})}_{4}}]\,S{{O}_{4}}\]
Answer» B. \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]
3140.

Oxidation state of nitrogen is incorrectly given for [UPSEAT 2000, 01]

A. Compound - \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\] Oxidation state - 0
B. Compound - \[N{{H}_{2}}OH\] Oxidation state - \[-1\]
C. Compound - \[{{({{N}_{2}}{{H}_{5}})}_{2}}S{{O}_{4}}\] Oxidation state - \[+2\]
D. Compound - \[M{{g}_{3}}{{N}_{2}}\] Oxidation state - \[-3\]
Answer» D. Compound - \[M{{g}_{3}}{{N}_{2}}\] Oxidation state - \[-3\]
3141.

According to IUPAC nomenclature sodium nitroprussied is named is       [CBSE PMT 2003]

A. Sodium pentacyanonitrosyl ferrate (III)
B. Sodium nitroferricyanide
C. Sodium nitroferrocyanide
D. Sodium pentacyanonitrosyl ferrate (II)
Answer» B. Sodium nitroferricyanide
3142.

In the coordination compound, \[{{K}_{4}}[Ni{{(CN)}_{4}}]\] oxidation state of nickel is [AIEEE 2003]

A. \[-1\]
B. 0
C. \[+1\]
D. \[+2\]
Answer» C. \[+1\]
3143.

IUPAC name of \[{{K}_{3}}Fe{{(CN)}_{6}}\] is [MP PMT 1993; MP PET 1997]

A. Potassium ferrocyanide (II)
B. Potassium hexaferrocyanate (III)
C. Potassium ferrohexacyanate (II)
D. Potassium hexacyanoferrate (III)
Answer» E.
3144.

The effective atomic number of cobalt in the complex \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\] is   [MP PET 2003]

A. 36
B. 33
C. 24
D. 30
Answer» B. 33
3145.

The correct IUPAC name of potassium cuprochloride is

A. Potassium copper (I) tetrachloride
B. Potassium tetrachlorocuprate (I)
C. Tetrachloropotassium cuprate (I)
D. Tetrachlorocopper (I) potassiate
Answer» C. Tetrachloropotassium cuprate (I)
3146.

The oxidation number of \[Pt\] in \[{{[Pt({{C}_{2}}{{H}_{4}})C{{l}_{3}}]}^{-}}\] is [MNR 1993]

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
3147.

The oxidation state of cobalt in the complex compound \[\left[ Co{{\left( N{{H}_{3}} \right)}_{6}} \right]C{{l}_{3}}\] is

A. 3
B. 6
C. 5
D. 2
Answer» B. 6
3148.

IUPAC name of \[[Co(ONO){{(N{{H}_{3}})}_{5}}C{{l}_{2}}]\] is [AMU 2002]

A. Pentaammine nitro cobalt (III) chloride
B. Pentaammine nitrito cobalt (III) chloride
C. Pentaammine nitroso cobalt (III) chloride
D. Pentaammine oxo-nitro cobalt (III) chloride
Answer» C. Pentaammine nitroso cobalt (III) chloride
3149.

In \[\left[ Ni{{\left( N{{H}_{3}} \right)}_{4}} \right]S{{O}_{4}},\] the E.A.N. of \[Ni\] is

A. 34
B. 35
C. 36
D. 37
Answer» B. 35
3150.

IUPAC name of \[\left[ Pt{{(N{{H}_{3}})}_{3}}(Br)(N{{O}_{2}})Cl \right]Cl\] is [CBSE PMT 1998]

A. Triamminechlorobromonitroplatinum (IV) chloride
B. Triamminebromonitrochloroplatinum (IV) chloride
C. Triamminebromochloronitroplatinum (IV) chloride
D. Triamminenitrochlorobromoplatinum (IV) chloride
Answer» D. Triamminenitrochlorobromoplatinum (IV) chloride