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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.
| 5801. |
d-block elements form |
| A. | Ionic compounds |
| B. | Covalent compounds |
| C. | Ionic and covalent compounds |
| D. | Only complex compounds |
| Answer» D. Only complex compounds | |
| 5802. |
The atomic number of an element is 22. The highest oxidation state exhibited by it in its compounds is [MP PMT 1996] |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 5803. |
The electroplating of chromium is undertaken because [MP PMT 1994] |
| A. | Electrolysis of chromium is easier |
| B. | Chromium can form alloys with other metals |
| C. | Chromium gives protective and decorative coating to the base metal |
| D. | Of the high reactivity of metallic chromium |
| Answer» D. Of the high reactivity of metallic chromium | |
| 5804. |
An element having the electronic configuration \[\left[ Ar \right]3{{d}^{2}}4{{s}^{2}}\] belongs to [MP PMT 1993] |
| A. | s - block elements |
| B. | p - block elements |
| C. | d - block elements |
| D. | f - block elements |
| Answer» D. f - block elements | |
| 5805. |
Mercury is transported in metal containers made of [DPMT 1982; CPMT 1973] |
| A. | Silver |
| B. | Lead |
| C. | Iron |
| D. | Aluminium |
| Answer» D. Aluminium | |
| 5806. |
Essential constituent of an amalgam is [DPMT 1982; CPMT 1973, 77, 78, 89] |
| A. | Iron |
| B. | An alkali metal |
| C. | Silver |
| D. | Mercury |
| Answer» E. | |
| 5807. |
Which of the following structure is that of a coinage metal [CPMT 1973, 86] |
| A. | 2, 8, 1 |
| B. | 2, 8, 18, 1 |
| C. | 2, 8, 8 |
| D. | 2, 18, 8, 3 |
| Answer» C. 2, 8, 8 | |
| 5808. |
Mercury is the only metal which is liquid at \[{{0}^{o}}C\]. This is due to its [CBSE PMT 1995] |
| A. | Very high ionisation energy and weak metallic bond |
| B. | Low ionisation potential |
| C. | High atomic weight |
| D. | High vapour pressure |
| Answer» B. Low ionisation potential | |
| 5809. |
Number of unpaired electrons in \[M{{n}^{2+}}\] is [CPMT 1997; Pb. PET/PMT 1999] |
| A. | 3 |
| B. | 5 |
| C. | 4 |
| D. | 1 |
| Answer» C. 4 | |
| 5810. |
In transition elements, the orbitals partially filled by electrons are [DPMT 1984; MP PMT 1999] |
| A. | s - orbitals |
| B. | p - orbitals |
| C. | d - orbitals |
| D. | f - orbitals |
| Answer» D. f - orbitals | |
| 5811. |
The oxidation number of iron in potassium ferrocyanide is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | Zero |
| Answer» B. 3 | |
| 5812. |
The \[3d\] metal ions form coloured compounds because the energy corresponding to the following lies in the visible range of electromagnetic spectrum |
| A. | Free energy change of complex formation by \[3d\] metal ions |
| B. | \[d-d\] transitions of \[3d\] electrons |
| C. | Heat of hydration of \[3d\] metal ions |
| D. | Ionisation energy of \[3d\] metal ions |
| Answer» C. Heat of hydration of \[3d\] metal ions | |
| 5813. |
The \[3d\] elements show variable oxidation states because the energies of the following sets of orbitals are almost similar |
| A. | \[ns,(n-1)d\] |
| B. | \[ns,nd\] |
| C. | \[(n-1)s,nd\] |
| D. | \[np,(n-1)d\] |
| Answer» B. \[ns,nd\] | |
| 5814. |
Which of the following \[3d\] bivalent metal ions has the smallest number of unpaired \[d\] electrons |
| A. | \[3{{d}^{6}}\] |
| B. | \[3{{d}^{7}}\] |
| C. | \[3{{d}^{8}}\] |
| D. | \[3{{d}^{9}}\] |
| Answer» E. | |
| 5815. |
Most common oxidation states of \[Cs\] (cesium) are [AIEEE 2002] |
| A. | + 2, + 3 |
| B. | + 2, + 4 |
| C. | + 3, + 4 |
| D. | + 3, + 5 |
| Answer» D. + 3, + 5 | |
| 5816. |
The number of incomplete orbitals in inner transition element is [Pb. PMT 2001] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 1 |
| Answer» C. 4 | |
| 5817. |
Which of the following pair of ions may exhibit same colour |
| A. | \[C{{r}^{+++}}\] and \[F{{e}^{++}}\] |
| B. | \[T{{i}^{+++}}\] and \[{{V}^{++}}\] |
| C. | \[F{{e}^{+++}}\] and \[M{{n}^{++}}\] |
| D. | \[C{{u}^{+}}\] and \[N{{i}^{++}}\] |
| Answer» B. \[T{{i}^{+++}}\] and \[{{V}^{++}}\] | |
| 5818. |
The coinage metals are |
| A. | Iron, Cobalt, Nickel |
| B. | Copper and Zinc |
| C. | Copper, Silver and Gold |
| D. | Gold and Platinum |
| Answer» D. Gold and Platinum | |
| 5819. |
The magnetic moment of a metal ion of first transition series is 2.83 \[BM\]. Therefore it will have unpaired electrons |
| A. | 6 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» E. | |
| 5820. |
\[Fe\] has been placed in the eighth group, the number of electrons in the outermost orbit is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 5821. |
Which of the following electronic configuration is that of a transitional element [NCERT 1983; CPMT 1989, 97; MP PET/PMT 1997; AIIMS 2000; MP PMT 2002] |
| A. | \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}}{{d}^{10}},4{{s}^{2}}{{p}^{6}}\] |
| B. | \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}}{{d}^{10}},4{{s}^{2}}{{p}^{1}}\] |
| C. | \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}}{{d}^{2}},4{{s}^{2}}\] |
| D. | \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}},4{{s}^{2}}\] |
| Answer» D. \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}},4{{s}^{2}}\] | |
| 5822. |
Which of the following transitional metal has lowest density |
| A. | \[Sc\] |
| B. | \[Ti\] |
| C. | \[V\] |
| D. | \[Cr\] |
| Answer» B. \[Ti\] | |
| 5823. |
The number of oxidation states of manganese is |
| A. | 4 |
| B. | 6 |
| C. | 3 |
| D. | 8 |
| Answer» C. 3 | |
| 5824. |
Which one of the following characteristics of the transition metals is associated with their catalytic activity [CBSE PMT 2003] |
| A. | Variable oxidation states |
| B. | High enthalpy of atomization |
| C. | Paramagnetic behaviour |
| D. | Colour of hydrated ions |
| Answer» B. High enthalpy of atomization | |
| 5825. |
A reduction in atomic size with increase in atomic number is a characteristic of elements of [AIEEE 2003] |
| A. | High atomic masses |
| B. | d-block |
| C. | f -block |
| D. | Radioactive series |
| Answer» D. Radioactive series | |
| 5826. |
One of the following metals forms a volatile carbonyl compound and this property is taken advantage of for its extraction. This metal is [NCERT 1984] |
| A. | Iron |
| B. | Nickel |
| C. | Cobalt |
| D. | Tungston |
| Answer» C. Cobalt | |
| 5827. |
Which of the following ions gives coloured solution [MP PET 1995] |
| A. | \[C{{u}^{+}}\] |
| B. | \[Z{{n}^{++}}\] |
| C. | \[A{{g}^{+}}\] |
| D. | \[F{{e}^{++}}\] |
| Answer» E. | |
| 5828. |
The 3d-elements show variable oxidation states. What is the maximum oxidation state shown by the element \[Mn\] [MP PMT 1997; JIPMER 2002] |
| A. | 4 |
| B. | 5 |
| C. | + 6 |
| D. | 7 |
| Answer» E. | |
| 5829. |
Which of the following ionic species will impart colour to an aqueous solution [CBSE PMT 1998; BHU 2001] |
| A. | \[T{{i}^{4+}}\] |
| B. | \[C{{u}^{+}}\] |
| C. | \[Z{{n}^{2+}}\] |
| D. | \[C{{r}^{3+}}\] |
| Answer» E. | |
| 5830. |
\[Zn\] and \[Hg\] belong to the same group, they differ in many of their properties. The property that is shared by both is [Pb. PMT 1998] |
| A. | They form oxide readily |
| B. | They react with steam readily |
| C. | They react with hot concentrated sulphuric acid |
| D. | They react with hot sodium hydroxide |
| Answer» B. They react with steam readily | |
| 5831. |
Which of the following statements is not correct about the electronic configuration of gaseous chromium atom [MP PET 1994] |
| A. | It has 5 electrons in \[3d\] and one electron in \[4s\] orbitals |
| B. | The principal quantum numbers of its valence electrons are 3 and 4 |
| C. | It has 6 electrons in \[3d\] orbital |
| D. | Its valance electrons have quantum number \['l'\] 0 and 2 |
| Answer» D. Its valance electrons have quantum number \['l'\] 0 and 2 | |
| 5832. |
The electronic configuration \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},3{{s}^{2}}{{p}^{6}}{{d}^{6}}\] corresponds to [MP PET 1994] |
| A. | \[M{{n}^{2+}}\] |
| B. | \[F{{e}^{2+}}\] |
| C. | \[Co\] |
| D. | \[Ge\] |
| Answer» C. \[Co\] | |
| 5833. |
Which one of the following properties is not of transition elements [MP PET 1999; CPMT 2002] |
| A. | Colour |
| B. | Paramagnetism |
| C. | Fixed valency |
| D. | None of the above |
| Answer» D. None of the above | |
| 5834. |
Ionisation potential values of d-block elements as compared to ionization potential value of f-block elements are [Pb. PMT 2001] |
| A. | Higher |
| B. | Equal |
| C. | lower |
| D. | All of these |
| Answer» B. Equal | |
| 5835. |
The metal present in \[{{B}_{12}}\] is [BHU 1997] |
| A. | Magnesium |
| B. | Iron |
| C. | Cobalt |
| D. | Manganese |
| Answer» D. Manganese | |
| 5836. |
Which of the following ions is coloured [BHU 1997] |
| A. | \[C{{u}^{+}}\] |
| B. | \[C{{u}^{2+}}\] |
| C. | \[T{{i}^{4+}}\] |
| D. | \[{{V}^{5+}}\] |
| Answer» C. \[T{{i}^{4+}}\] | |
| 5837. |
Which of the following ions is paramagnetic |
| A. | \[C{{u}^{+}}\] |
| B. | \[Z{{n}^{+2}}\] |
| C. | \[T{{i}^{+3}}\] |
| D. | \[T{{i}^{+4}}\] |
| Answer» D. \[T{{i}^{+4}}\] | |
| 5838. |
Which of the following may be colourless [RPMT 1997; RPET/PMT 1999] |
| A. | \[C{{r}^{+3}}\] |
| B. | \[C{{u}^{+}}\] |
| C. | \[F{{e}^{+3}}\] |
| D. | \[C{{u}^{2+}}\] |
| Answer» C. \[F{{e}^{+3}}\] | |
| 5839. |
Super alloys are usually [Kurukshetra CET 2002] |
| A. | Iron based |
| B. | Nickel based |
| C. | Cobalt based |
| D. | Based on all of these |
| Answer» E. | |
| 5840. |
The transitional metal which shows oxidation state from +2 to +7 belong to group |
| A. | VII B |
| B. | VI B |
| C. | II B |
| D. | III B |
| Answer» B. VI B | |
| 5841. |
The metal ion which does not form coloured compound is [Kurukshetra CET 2002] |
| A. | Chromium |
| B. | Manganese |
| C. | Zinc |
| D. | Iron |
| Answer» D. Iron | |
| 5842. |
The number of unpaired electrons in \[C{{r}^{3+}}\] ion is [Kurukshetra CET 2002] |
| A. | 3 |
| B. | 5 |
| C. | 4 |
| D. | 1 |
| Answer» B. 5 | |
| 5843. |
Variable valency is shown by [MP PMT 1986; AMU 1999] |
| A. | \[Na\] |
| B. | \[Cu\] |
| C. | \[Mg\] |
| D. | \[Al\] |
| Answer» C. \[Mg\] | |
| 5844. |
Which one is wrong in the following statements [Kurukshetra CET 2002] |
| A. | Gold is considered to be the king of metals |
| B. | Gold is soluble in mercury |
| C. | Copper is added to gold to make it hard |
| D. | None of these |
| Answer» E. | |
| 5845. |
Which one of the following is an example of non-typical transition elements [MP PMT 2002] |
| A. | Li, K, Na |
| B. | Be, Al, Pb |
| C. | Zn, Cd, Hg |
| D. | Ba, Ca, Sr |
| Answer» D. Ba, Ca, Sr | |
| 5846. |
The correct statement in respect of d-block elements [MP PMT 2000, 02] |
| A. | They are all metals |
| B. | They show variable valency |
| C. | They form coloured ions and complex salts |
| D. | All above statements are correct |
| Answer» E. | |
| 5847. |
The transition metals mostly are [MP PMT 2000; Kerala (Med.) 2002] |
| A. | Diamagnetic |
| B. | Paramagnetic |
| C. | Neither diamagnetic nor paramagnetic |
| D. | Both diamagnetic and paramagnetic |
| Answer» C. Neither diamagnetic nor paramagnetic | |
| 5848. |
Which of the following set of elements does not belong to transitional elements set [EAMCET 1998] |
| A. | \[Fe,\] \[Co,\] \[Ni\] |
| B. | \[Cu,\] \[Ag,\] \[Au\] |
| C. | \[Ti,\] \[Zr,\] \[Hf\] |
| D. | \[Ga,\] \[In,\] \[Tl\] |
| Answer» E. | |
| 5849. |
The test of ozone \[{{O}_{3}}\] can be done by [AFMC 1997] |
| A. | \[Ag\] |
| B. | \[Hg\] |
| C. | \[Au\] |
| D. | \[Cu\] |
| Answer» C. \[Au\] | |
| 5850. |
The heaviest atom amongst the following is [Kurukshetra CEE 1998] |
| A. | Uranium |
| B. | Radium |
| C. | Lead |
| D. | Mercury |
| Answer» B. Radium | |