MCQOPTIONS
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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.
| 5701. |
The ability to form complex compounds by the transitional metal ion is due to |
| A. | Small size |
| B. | Vacant \['d'\] orbitals |
| C. | High nuclear charge |
| D. | All of these |
| Answer» E. | |
| 5702. |
Which of the following is diamagnetic transitional metal ion |
| A. | \[N{{i}^{+2}}\] |
| B. | \[Z{{n}^{+2}}\] |
| C. | \[C{{o}^{+2}}\] |
| D. | \[C{{u}^{+2}}\] |
| Answer» C. \[C{{o}^{+2}}\] | |
| 5703. |
Which of the following is not an actinide [DPMT 2005] |
| A. | Curium |
| B. | Californium |
| C. | Uranium |
| D. | Terbium |
| Answer» E. | |
| 5704. |
Zn is related to which group [MP PMT 2003] |
| A. | IIB |
| B. | IIA |
| C. | IA |
| D. | IB |
| Answer» B. IIA | |
| 5705. |
The number of unpaired electrons in cobalt atom is (atomic number of Co = 27) [MP PMT 2003] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 1 |
| Answer» C. 4 | |
| 5706. |
Transition metals are related to which block [MP PMT 2003; CPMT 1991] |
| A. | s-block |
| B. | p-block |
| C. | d-block |
| D. | None of these |
| Answer» D. None of these | |
| 5707. |
In a reaction the ferrous \[(F{{e}^{++}})\] iron is oxidised to ferric \[(F{{e}^{+++}})\] ion. The equivalent weight of the ion in the above reaction is equal to [CPMT 1985] |
| A. | Half of the atomic weight |
| B. | 1/5 of the atomic weight |
| C. | The atomic weight |
| D. | Twice the atomic weight |
| Answer» D. Twice the atomic weight | |
| 5708. |
Cuprous ion is colourless while cupric ion is coloured because [KCET 2000] |
| A. | Both have half filled p and d-orbitals |
| B. | Cuprous ion has incomplete d-orbital and cupric ion has a complete d-orbital |
| C. | Both have unpaired electrons in the d-orbitals |
| D. | Cuprous ion has a complete d-orbital and cupric ion has an incomplete d-orbital |
| Answer» E. | |
| 5709. |
\[F{{e}^{2+}}\] shows [RPET 2000] |
| A. | Ferromagnetism |
| B. | Paramagnetism |
| C. | Diamagnetism |
| D. | None of these |
| Answer» C. Diamagnetism | |
| 5710. |
Which of the following elements does not belong to the first transition series [BHU 2000; MP PMT 1995] |
| A. | Fe |
| B. | V |
| C. | Ag |
| D. | Cu |
| Answer» D. Cu | |
| 5711. |
To support tungstun filament in electric bulb, the steel used is |
| A. | \[Cr\] |
| B. | \[Ni\] |
| C. | \[Mn\] |
| D. | \[Mo\] |
| Answer» E. | |
| 5712. |
Neobium and tantalum metals are used in making surgical instruments because they are |
| A. | Non-corrosive |
| B. | Hard |
| C. | Soft |
| D. | All |
| Answer» B. Hard | |
| 5713. |
In making gun-berrel, the steel used is |
| A. | \[Fe-Mn\] |
| B. | \[Fe-Cr\] |
| C. | \[Fe-W\] |
| D. | \[Ni-Mo\] |
| Answer» E. | |
| 5714. |
Bullet-proof steel alloy is prepared by using |
| A. | \[Sc\] |
| B. | \[Ni\] |
| C. | \[Zr\] |
| D. | \[Zn\] |
| Answer» D. \[Zn\] | |
| 5715. |
Cigarette or gas lighter is made up of |
| A. | Misch metal |
| B. | Alkali metal |
| C. | Noble metal |
| D. | None |
| Answer» B. Alkali metal | |
| 5716. |
Which of the following has highest ionic radii [MP PMT 1990] |
| A. | \[C{{r}^{+3}}\] |
| B. | \[M{{n}^{+3}}\] |
| C. | \[F{{e}^{+3}}\] |
| D. | \[C{{o}^{+3}}\] |
| Answer» B. \[M{{n}^{+3}}\] | |
| 5717. |
Out of all the known elements the number of transitional elements is |
| A. | 80 |
| B. | 61 |
| C. | 43 |
| D. | 38 |
| Answer» C. 43 | |
| 5718. |
The electronic configuration of cobalt is |
| A. | \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}.3{{s}^{2}}3{{p}^{6}}3{{d}^{1}},4{{s}^{2}}\] |
| B. | \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{7}},4{{s}^{2}}\] |
| C. | \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{3}},4{{s}^{2}}\] |
| D. | \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},4{{s}^{2}}\] |
| Answer» C. \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{3}},4{{s}^{2}}\] | |
| 5719. |
From +6 to +1 oxidation state is shown by the element of....... group |
| A. | V-B |
| B. | VI-B |
| C. | VII-B |
| D. | VIII |
| Answer» C. VII-B | |
| 5720. |
Which of the following is not correct about transition metals [MP PET 1996] |
| A. | Their melting and boiling points are high |
| B. | Their compounds are generally coloured |
| C. | They can form ionic or covalent compounds |
| D. | They do not exhibit variable valency |
| Answer» E. | |
| 5721. |
Common oxidation state of scandium, a transition element is/are [atomic number of Sc = 21] [MP PET 1996] |
| A. | 4 |
| B. | 1 |
| C. | + 2 and + 3 |
| D. | + 4 and +1 |
| Answer» D. + 4 and +1 | |
| 5722. |
Of the ions \[Z{{n}^{2+}},\] \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\][atomic number of \[Zn=30,\] \[Ni=28,\] \[Cr=24\]] [MP PET 1996] |
| A. | Only \[Z{{n}^{2+}}\] is colourless and \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\] are coloured |
| B. | All three are colourless |
| C. | All three are coloured |
| D. | Only \[N{{i}^{2+}}\] is coloured and \[Z{{n}^{2+}}\] and \[C{{r}^{3+}}\] are colourless |
| Answer» B. All three are colourless | |
| 5723. |
Number of unpaired electrons in \[F{{e}^{+++}}(Z=26)\] is [MP PMT 1995; RPET 2003] |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 3 |
| Answer» C. 6 | |
| 5724. |
A transition element \[X\] has a configuration \[\left[ Ar \right]3{{d}^{4}}\] in its + 3 oxidation state. Its atomic number is [CBSE PMT 1996] |
| A. | 25 |
| B. | 26 |
| C. | 22 |
| D. | 19 |
| Answer» B. 26 | |
| 5725. |
Which of the following has second ionisation potential less than expected |
| A. | \[Cr\] |
| B. | \[Zn\] |
| C. | \[V\] |
| D. | \[Mo\] |
| Answer» C. \[V\] | |
| 5726. |
In the following transition elements, the lowest M.P. and B.P. is exhibited by |
| A. | \[Cr\] |
| B. | \[Hg\] |
| C. | \[Cu\] |
| D. | \[Au\] |
| Answer» C. \[Cu\] | |
| 5727. |
The hardness of \[Cr\] is due to ...... and metallic lusture is due to ....... |
| A. | Covalent bond, metallic bond |
| B. | Covalent bond, hydrogen bond |
| C. | Metallic bond, covalent bond |
| D. | Metallic bond, hydrogen bond |
| Answer» B. Covalent bond, hydrogen bond | |
| 5728. |
The valence shell electronic configuration of \[C{{r}^{2+}}\] ion is [Orissa JEE 2005] |
| A. | \[4{{s}^{o}}3{{d}^{4}}\] |
| B. | \[4{{s}^{2}}3{{d}^{2}}\] |
| C. | \[4{{s}^{2}}3{{d}^{0}}\] |
| D. | \[3{{p}^{6}}4{{s}^{2}}\] |
| Answer» B. \[4{{s}^{2}}3{{d}^{2}}\] | |
| 5729. |
Which one of the following statement is true for transition elements [AIIMS 1983; AFMC 1987; JIPMER 1997] |
| A. | They exhibit diamagnetism |
| B. | They exhibit inert pair effect |
| C. | They do not form alloys |
| D. | They show variable oxidation states |
| Answer» E. | |
| 5730. |
Platinum, palladium, iridium etc., are called noble metals because [NCERT 1975; CPMT 1976] |
| A. | Alfred Noble discovered them |
| B. | They are inert towards many common reagents |
| C. | They are shining lustrous and pleasing to look at |
| D. | They are found in active state |
| Answer» C. They are shining lustrous and pleasing to look at | |
| 5731. |
Which of the following statement is not true about Mohr's salt [CPMT 1988] |
| A. | It decolourises \[KMn{{O}_{4}}\] |
| B. | It is a primary standard |
| C. | It is a double salt |
| D. | Oxidation state of iron is +3 in this salt |
| Answer» E. | |
| 5732. |
Zinc, cadmium and mercury show the properties of |
| A. | Typical elements |
| B. | Normal elements |
| C. | Transitional elements |
| D. | Rare elements |
| Answer» D. Rare elements | |
| 5733. |
Highest (+7) oxidation state is shown by [MP PMT 1990, 2001; RPMT 1999; AIIMS 1999; JIPMER 2001; CBSE PMT 1994, 2002; MP PET 1989, 2003] |
| A. | \[Co\] |
| B. | \[Cr\] |
| C. | \[V\] |
| D. | \[Mn\] |
| Answer» E. | |
| 5734. |
Which of the following statement is not correct [NCERT 1983] |
| A. | Metals contribute their valency electrons to the common sea of electrons |
| B. | Metals have high co-ordination number |
| C. | Metals tend to adopt closely packed structures |
| D. | Metals have high lattice energy |
| Answer» B. Metals have high co-ordination number | |
| 5735. |
The number of unpaired electrons in ferrous ion is [JIPMER (Med.) 2001] |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 5736. |
Variable valency is shown by [UPSEAT 2001] |
| A. | Typical elements |
| B. | Normal elements |
| C. | Transition elements |
| D. | None of these |
| Answer» D. None of these | |
| 5737. |
The element having electronic configuration belongs to \[n{{s}^{2}}(n-1){{d}^{1-10}}(n-2){{f}^{1-14}}\] [UPSEAT 2001] |
| A. | s-block |
| B. | p-block |
| C. | d-block |
| D. | f-block |
| Answer» E. | |
| 5738. |
The main reason for not using a mercury electrolytic cell in \[NaOH\] manufacture is that [CPMT 1988] |
| A. | \[Hg\] is toxic |
| B. | \[Hg\] is a liquid |
| C. | \[Hg\] has a high vapour pressure |
| D. | \[Hg\] is a good conductor of electricity |
| Answer» E. | |
| 5739. |
Which is not true for transition elements |
| A. | They are all metals |
| B. | They show variable valency |
| C. | They form coloured ions |
| D. | They do not form co-ordinate compounds |
| Answer» E. | |
| 5740. |
Which of the following is a transitional element [MP PMT 1989; DPMT 1982] |
| A. | \[Al\] |
| B. | \[As\] |
| C. | \[Ni\] |
| D. | \[Rb\] |
| Answer» D. \[Rb\] | |
| 5741. |
The transitional metal which form green compound in +3 oxidation state and yellow orange compound in +6 oxidation state is |
| A. | \[Fe\] |
| B. | \[Ni\] |
| C. | \[Cr\] |
| D. | \[Co\] |
| Answer» D. \[Co\] | |
| 5742. |
Zinc does not show variable valency like d-block elements because [MP PET 1989; MP PMT 1992; CPMT 1984] |
| A. | It is a soft metal |
| B. | d-orbital is complete |
| C. | It is low melting |
| D. | Two electrons are present in the outermost orbit |
| Answer» C. It is low melting | |
| 5743. |
Which of the following statement is correct [MP PET/PMT 1988; MP PMT 1991] |
| A. | Iron belongs to 3rd transition series of the periodic table |
| B. | Iron belongs to f-block of the periodic table |
| C. | Iron belongs to second transition series of the periodic table |
| D. | Iron belongs to group VIII of the periodic table |
| Answer» E. | |
| 5744. |
Maximum number of oxidation states of transition metal is derived from the following configuration [MP PET/PMT 1988] |
| A. | ns electron |
| B. | \[(n-1)d\] electron |
| C. | \[(n+1)d\] electron |
| D. | \[ns+(n-1)d\] electron |
| Answer» E. | |
| 5745. |
Which of the following transition metal cation has maximum unpaired electrons [MP PET/PMT 1988; MP PMT 1991; RPMT 1997] |
| A. | \[M{{n}^{+2}}\] |
| B. | \[F{{e}^{+2}}\] |
| C. | \[C{{o}^{2+}}\] |
| D. | \[N{{i}^{2+}}\] |
| Answer» B. \[F{{e}^{+2}}\] | |
| 5746. |
Transition metals are often paramagnetic owing to [Bihar CEE 1992] |
| A. | Their high M.P. and B.P. |
| B. | The presence of vacant orbitals |
| C. | The presence of one or more unpaired electrons in the system |
| D. | Their being less electropositive than the elements of groups I-A and II-A |
| Answer» D. Their being less electropositive than the elements of groups I-A and II-A | |
| 5747. |
Which does not form amalgam [AFMC 1988; MP PET 2001] |
| A. | \[Fe\] |
| B. | \[Co\] |
| C. | \[Ag\] |
| D. | \[Zn\] |
| Answer» B. \[Co\] | |
| 5748. |
Which is not amphoteric [CPMT 1991] |
| A. | \[A{{l}^{3+}}\] |
| B. | \[C{{r}^{3+}}\] |
| C. | \[F{{e}^{3+}}\] |
| D. | \[Z{{n}^{2+}}\] |
| Answer» D. \[Z{{n}^{2+}}\] | |
| 5749. |
Which statement is true about the transitional elements [MP PMT 1995] |
| A. | They are highly reactive |
| B. | They show variable oxidation states |
| C. | They have low M.P. |
| D. | They are highly electropositive |
| Answer» C. They have low M.P. | |
| 5750. |
Transition elements are coloured [MP PMT 1986; Pb. CET 1989; RPET 1999] |
| A. | Due to small size |
| B. | Due to metallic nature |
| C. | Due to unpaired d - electrons |
| D. | All of these |
| Answer» D. All of these | |