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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 | |