MDCAT Chemistry Online Test With Answers

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MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following compounds is not known? SbCl NCl3 Nl3 NCl5
2 Which element of group V-A and VII-A does not use d-orbital? Nitrogen Sulphur Arsenic Chlorine
3 Which one of the following doesn't exhibit allotropy? Bi As N P
4 Which pair of following pair is metalloid? Antimony and bismuth Phosphorous and arsenic Nitrogen and phosphorous Arsenic and antimony
5 Which of the following elements is most metallic Bi sb As P
6 The element which exhibits maximum catenation property is C Pb Ge Sn
7 Elements of group IV-A are neither strongly electropositive nor strongly electronegative strongly electropositive strongly electronegative none of these
8 The general electronic configuration of group IV-A elements is ns2, np6 ns2, np4 ns2, np3 ns2, np2
9 What is the formula of silica? Si2O3 SiO2 Si3O4 SiO-
10 What is name of hydrated variety of quartz? Rose quartz Smokey quartz Silica Opal
11 About 25% of earth crust mass is made up of element Oxygen Silicon Aluminium Aluminates
12 What is the formula of talc or soapstone? Na2B4O7.10H2O H2Mg3(SiO3)4 Cu2S NaNO3
13 What is the formula of magnesite? PbS MgSO4. 7H2O MgCO3 CaCO3
14 What is the formula of dolomite? CaMg3 (SiO3)4 MgCO3 MgCO3.CaCO3, MgSO4
15 Which is not mineral of AI? Diaspore Corrundam Bauxite Galena
16 Formula of sodium beryllite is Na2B4O7 Na2BeO2 BeONa Na2B4O7 .10 H2O
17 What is the formula of clay? Asbestos Talc H2Al2(SiO4)2.H2O Na2SiO3
18 What is the formula of cryolite? Al2O3.2H2O Na2B4O7 .10 H2O Na3AIF6 Ca2B6O11. 5H2O
19 What is the formula of bauxite? Al2O3.2H2O Al2O3 Na2B4O7 .10 H2O Ca2B6O11. 5H2O
20 Corrundam is ore of which element? Al Th In Mg
21 Which alkaline earth metal makes peroxide? Ba Be Mg Ca
22 Which of the following element has high m.p and b.p, it acts as a reducing agent, and can react with bases? Sr Ca Be Mg
23 How magnesium reacts with water? In frozen ice water With cold water In with steam In hot state
24 One of the following does not give the flame test. Which is that Sr Bа Be Na
25 Asbestos is commonly used in making wall board black board soft board hard board
26 Plaster of Paris is obtained from marble bauxite gypsum limestone
27 Elements of II-A group are called alkaline earth metals due to the reason that they occur in earth only they form divalent cations only they have ns2 electronic configuration their oxides and hydroxides are alkaline in nature and metals are present in earth crust
28 Which of the following configurations corresponds to alkaline earth metals? [Ar] 3d10, 4s2 [Ne] 3d2, 3p2 [Ar] 4s2 [Ar], 3d10, 4s1
29 Beryllium differs from other elements of group Il-A due to high charge density comparatively high nuclear charge small radius all above
30 Which element differs from rest of elements of its group? Ba Mg Ca Be
31 The alkaline earth metals are called so because they form alkaline solution and are present in earth crust as minerals form alkaline solution and are found in nature states are present in earth crust are present in earth crust as their minerals
32 Elements of group ll-A are called f-block elements s-block elements p-block elements d-block elements
33 Soda lime is often employed to remove both H2O and NO2 CO2, and NO2, H2O and CO2 H2S and CO2
34 Li resembles with Mg, because the ratio of their charge to size is nearly the same both have nearly same size both are metallic in nature both are found together in nature
35 Compared with alkaline earth metals, the alkali metals exhibit. lower ionization energies greater hardness high boiling point smaller ionic radii
36 Which of the following belongs to alkaline earth metals Cu Zn Sn Mg
37 Which of the following are not known to form compounds in more than one oxidation state? Transition metals Halogens Alkali metals Noble gases
38 Which set of elements is good loser of electrons F2. Cl2, Br2 N, P. As O. S, Se Li, Na, K
39 Which one of the following elements is most electropositive out of group I -A and II-A group? K Mg Na Ca
40 Which of the following does not give flame test? Li Ba Mg Sr
41 The elements of group I-A react violently with water and make the solution neutral amphoteric acidic alkaline
42 Which is the least reactive of all the alkali metals Li Na K Cs
43 One of the following metals is the most reactive and form super oxide. Indicate that Mg K Be Li
44 Lithium differs from rest of members of its group due to which of following reasons High E.N of Li+1 Small radius High charge density All above are correct
45 Which one of following property is not true about alkali metals? Strongest bases due to their hydrides Low ionization energy Oxidation number more than +1 Form acidic oxides
46 Which one of the following elements is not an alkali metal? Na Sr Cs Rb
47 A molecule which contains two lone pairs and two bond pairs of electrons in valence shell of central atom, geometrical shape of molecules will be Tetrahedral Trigonal pyramidal Angular Linear
48 What will be the shape of a molecule which containstwo sigma bond pairs and one lone pair? Linear V shape Tetragonal Triangular
49 The shielding effect of inner electron is responsible for Having no effect on ionization energy Decreasing ionization energy Increasing ionization energy Increasing electronegativity
50 The elements for which the value of ionization energy is low can Gain electrons readily Lose electron less readily Gain electrons with difficulty Lose electron readily
51 The ionization energy of hydrogen atom is Zero 131.3kJmole 13.13kJ/mole 1313kJ/mole
52
For formation of ionic bond, electronegativity difference should be
 Equal to zero Equal to 0.5 More then 1.7 Less than 1.7
53 Which of the following molecule has zero dipole moment? PCI3 BF3 NH3 H2O
54 Among the following molecules, which one has coordinate covalent (dative) bond? CCI4 CO2 CO CH4
55 Which one of the following has zero dipole moment NH3 CHCI3 H2O BF3
56 Low IE is a symbol of high electronegativity small size High electron affinity Metallic character
57 At compromise distance the forces dominating between atoms are repulsive forces attractive forces Dipole induced dipole force H-bonding
58 What is not true for NH4CI It has ionic bond It has covalent bond It has coordinate bond It has hydrogen bond
59 H3O+ can't accept a Ip because it has positive charge The central atom is not electron deficient The shell of oxygen has reached its limit it already has a coordinate bond
60 What is true for a molecule with standard geometry It lacks a Ip It can't be a donor It can be an acceptor All
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