MDCAT Chemistry Online Test With Answers

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MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 If similar groups are attached to the same side, of C=C of alkene then it is Cis isomer Trans isomer Tautomer AIl
2 2-propanol shows-----isomerism with 1-propanol Chain isomerism Positional isomerism Metamerism Geometrical isomerism
3 State of hybridization of carbon in the carbocation is sp3 sp sp2 dsp2
4 Nitro alkanes exhibit the: Chain isomerism Positional isomerism Functional group Metamerism
5 Which of the following compound shows the geometrical isomerism 2-butene 2-butyne 2-butanol Butanol
6 The maximum number of isomer for an alkene with the molecular formula C2H8 2 3 4 5
7 [Ti (H20)6]3+ ion isin colour. Yellow Blue Violet Red
8 The energy difference of d-orbitals varies from Atom to atom lon to ion Electron to electron proton to proton
9 Which of the following are responsible for the colour developed in transition elements compounds? s-orbitals p-orbitals d-orbitals f-orbitals
10 Transition compounds which occur as tripositive ions have no 4s-electron 3p-electron 3s-electron 2s-electron
11 TiCl4 is used as catalyst for manufacture of Sulphuric acid Plastics Ethanol Tetraethyl lead
12 Catalyst used for ammonia synthesis is Cu Co Zn Fe
13 When light is exposed to transtion element, then electrons jump from lower orbitals to higher orbitals in Orbitals of s-subshell Orbitals of d-subshell Orbitals of p-subshell between different shells
14 d-d transition cannot be shows by Cu+1 Sc+3 Zn+2 All
15 Ti+3 shows minimum absorption (maximum transmittance) at-------and-------wavelength Yellow, Green Red. Yellow Blue. Green Red. Blue
16 Number of electrons involved in d-d transition of [Ti(H2O)6]+3 1 3 2 4
17 Which of the following transition metal forms colourless compounds in +4 oxidation state? Ti Cr Cu Zn
18 Which of the folowing compound is expected to be colored Na2SO4 ZnCl2 MgF<sub>2</sub> CuF<sub>2</sub>
19 The highest oxidation state of manganese is +7 -7 +6 +4
20 The oxidation state of transition elements is usually Variable Single Constant Infinite
21 Zine does not show variable oxidation state, because Its d-subshell is incomplete Its d-subshell is complete It is relatively soft metal It has two electrons in outermost shell
22 At which oxidation state Cu achieves electronic configuration of Zn+2 0 +2 +1 +3
23 The element which shows highest binding energy V T So Cr
24 Which of the followings has electronic configuration of Ar in +3 oxidation state Sc Mn Ti Zn
25 What is the sequence of electron take up and removal from 4s orbital a transition metal in 3d series? Enters first, leaves after 3d electrons removal Enters after 3d electrons, leaves after 3d electrons Enters after 3d eleetrons, leaves first Enters first and leaves first
26 Variable Oxidation state of is related to transition elements empty d-subshells Completely filled Partially filled d-subshell d-d transition
27 No of unpaired electrons are maximum in V+3 Mn+2 Fe+3 Cr+3
28 Which of the following pair has the same no. of electrons in d- subshell Sc+3,Ti+3 Mn+2,Fe+3 Ti+3,V+3 Cr+3.Co+2
29 Which of these has at least one d electron Sc+3 Mn+7 Ti+4 Cr+3
30 The total number of 3d-series transition elements is 10 40 14 58
31 Which ion has maximum number of unpaired electrons in 3d subshell and shows maximum paramagnetic behavior? Cr+3 Ni+2 Co+2 Fe+3
32 Which of the elements has seven electrons in d-subshell? Zn Co Cu Fe
33 d-d transition cannot be observed in Cr Cu Mn Zn
34 which of the following is a typical transition metal? Sc Y Ra Co
35 which one pair has the same oxidation state of-Fe? FeSO4 and FeCl4 FeCl4and FeCl3 FeSO4 and FeCl2 Fe2(SO4)3 and FeSO4
36 Which pair of transition elements shows abnormal electronic configuration? Sc and Zn Cu and Sc Zn and Cu Cu and Cr
37 Oxidation state of Mn' in KMnO4. K2MnO4, MnO2 and MnSO4 is in the order +7.+6.+2,+4 +6,+7,+2,+4 +7. +6.+4.+2 +4, +6, +7,+2
38 which of the following d blocks element can showthe highest oxidation number is its ompound Chromium iron Copper Manganese
39 In [Ti (H2O)]3+ which colour is transmitted Yellow Blue and red Blue and yellow red and yellow
40 In the electronic configuration of Cr one electron from 4s sub-shell is transferred to 3d sub-shell because The 3d orbital is of lower energy than 4s The half-filled d-subshell is more stable than 4 electrons having d-subshell The 4s orbital is of equal energy to 3d orbital 6 unpaired electron make Cr more paramagnetic
41 Which of the following is a non-typical transition element? Cr Zn Mn Fe
42 When light is exposed to a typical transition element, then electrons jumps from low orbitals to higher orbitals in f-orbitals s-orbitals p-orbitals d-orbitals
43 Highest oxidation state af the transition elements is +8 +7 +5 +1
44 Electrons in 5d energy level are filled up in case of Lanthanides Transition metals Actinides Rare gases
45 Zn has Zero unpaired electrons Three unpaired electrons Five unpaired electrons One paired electrons
46 The number of unpaired electrons present in Fe ions is 1 2 5 0
47 Paramagnetic behaviour is caused by the presence of Unpaired electrons Paired electrons Paired protons Paired electrons in an atom. molecule or ion
48 A transition element X has a configuration [Ar) 4s3dd in its +3 oxidation state. Its atomic number is 25 26 22 19
49 The maximum oxidation state of Mn is +6 +7 +5 +4
50 All 3d series elements show an oxidation state of oxidation state +1 +2 +3 Zero
51 Which of the following shows group IIIB Zn, Cd. Hg Cu. Ag. Au Sc. Y. La Ni. Pd. Pt
52 Group of element belongs to IIB group Zn. Cd. Hg Cu. Ag. Au Sc. Y. La Ni. Pd. Pt
53 Stability of Cu-metal is due to filled of d-orbital Half Completely Partially Quarterly
54 Group VIB of transition elements contains Zn. Cd. Hg Cr. Mo, w Fe. Ru, Os Mn. Te. Re
55 The strength of binding energy of transition elements depends upon Number of electron pairs Number of unpaired electrons Number of neutrons Number of protons
56 D-block elements are also called Non-typical transition element Outer transition elements Abnormal transition elements Inner transition
57 Fluorine is largely used in rocket fuels making Teflon making freon All
58 Which noble gas is used in mixture used for breathing by divers? Ge Ar Kr He
59 Which compound gives carbon when heated with conc. H2SO4. Starch Ethyl alcohol Oxalic acid Formic acid
60 The reaction between Cu and conc. H2SO4 produces Cu+2 SO<sub>2</sub> SO<sub>3</sub> H<sub>2</sub>
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