RM
NEET & AIIMS 2018-19
M-CAPS-05 : CHEMISTRY
CHEMISTRY
(Medical-Classroom Assessment Practice Sheet
Sheet))
Topics covered : Genesis of periodic classification, Modern periodic law and the present form of the periodic
table. Nomenclature of elements with atomic numbers > 100, Electronic configurations in periods, Groupwise
electronic configuration, s, p, d & f-block elements, Metals, Non-metals and metalloids, Trends in physical
properties : Atomic radius, Ionic radius, Ionisation enthalpy, Electron gain enthalpy, Electronegativity, Periodic
trends in chemical properties : Oxidation states, Anomalous properties of second period elements,
Periodic trends and chemical reactivity.
Choose the correct answers :
1. Which of the following is/are Dobereiner's triad? (1) Only (II) (2) (I) & (II)
(a) Li, Na, K (b) Cu, Ag, Zn (3) (I) & (III) (4) Only (I)
(c) Fe, Co, Ni (d) Ca, Sr, Ba 6. Predict correct statement.
Correct answer is (1) Eea > 0 (Eea = Electron affinity) implies that
(1) (a) & (b) (2) (a) & (d) electron attachment is exothermic
(3) (b) & (c) (4) (a), (b), (c) & (d) (2) Electron gain enthalpy of O– ion is negative
2. Elements with electronic configuration ns1 are (3) The electron gain enthalpy of a species X is
known as the negative of the ionization enthalpy of its
negative ion
(1) Inert gases (2) Alkali metals
(4) Both (1) & (3)
(3) Transuranic elements (4) Halogens
7. In which of the following pairs, the ionisation
3. The correct order of ionic radii of the following
energy of the first species is less than that of the
species is
second?
(1) Se2– > I– > Br– > O2– > F–
(1) O+, O (2) S, P
(2) I– > Se2– > O2– > Br– > F–
(3) N, P (4) Be+, Be
(3) Se2– > I– > Br– > F– > O2–
8. The number of elements that can be accommodated
(4) I– > Se2– > Br– > O2– > F– in the present set-up of the long form of the periodic
4. Among the following, the element having highest table is (upto 7th period).
ionization enthalpy as well as positive electron gain (1) 117 (2) 118
enthalpy is
(3) 119 (4) 120
(1) H (2) F
9. Which of the following statement is false?
(3) He (4) Na
(1) No inert gas is present in 7th period
5. Addition of an electron to a neutral gaseous atom
(2) 3rd period contains 18 elements
alwayds leads to
(3) Third group of the periodic table accommodates
(I) Formation of an anion
maximum number of elements
(II) Liberation of energy
(4) In p block, metals, non-metals and metalloids
(III) Decrease in proton/electron ratio are present
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M-CAPS : 05 (Medical-Classroom Assessment Practice Sheet) Regular Medical 2018-19
10. Correct order of ionisation enthalpy is 17. Out of the following elements, which one is the
(1) Be < B < C < N < O most reactive chemically?
(2) B < Be < C < N < O (1) Ba (2) Sr
(3) Be < B < C < O < N (3) Ca (4) Mg
(4) B < Be < C < O < N 18. What is the covalency of Al in [AlCl(H2O)5]2+ ?
11. Which of the following is correct for electron gain (1) 3 (2) 4
enthalpy (with –ve sign) of halogens?
(3) 5 (4) 6
(1) Br > F (2) Br > Cl
19. Which of the following oxides is most basic in
(3) F > I (4) F > Cl
nature?
12. An element with atomic number 113 has been
(1) Al2O3
discovered. It will belong to which of the following
block, group number, period and outershell (2) SiO2
electronic configuration?
(3) SO3
(1) s-block, group 2, period 7, 7s2
(4) Na2O
(2) p-block, group 13, period 7, 7s2 7p1
20. Elements of which block generally show maximum
(3) p-block, group 13, period 6, 6s2 6p1 variation in valency?
(4) d-block, group 12, period 6, 5d10 6s2 (1) p-block elements
13. In the general electronic configuration, (n – 2)f1–14 (2) s-block elements
(n – 1) d 0–1 ns 2 , if the value of n = 7, the
configuration will be of (3) d-block elements
(1) Lanthanoids (2) Actinides (4) d and s-block elements
(3) Transition elements (4) p-block elements 21. In modern periodic table, the basic character of
oxides
14. Which one of the following is a metalloid?
(1) Decreases from left to right and increases from
(1) K (2) Ge bottom to top
(3) Ce (4) Zn (2) Increases from left to right and decreases from
15. The X-X bond length is 1.5 Å and Y–Y bond length top to bottom
is 1.48 Å. If electronegativity values of X and Y are (3) Decreases from right to left and increases from
3 and 3.5 respectively, then Y–X bond length would top to bottom
be
(4) Decreases from left to right and increases from
(1) 1.44 Å (2) 0.98 Å top to bottom
(3) 1.75 Å (4) 0.73 Å 22. Beryllium and aluminium exhibit many properties
which are similar but the two elements differ in
16. The common valency shown by the elements of
group 15 is/are (1) Exhibiting amphoteric nature of their oxides
(1) 4 (2) 3, 5 (2) Forming covalent halides
(3) 2, 6 (4) 1, 7 (3) Forming polymeric hydrides
(4) Exhibiting maximum covalency in compounds
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RM
NEET & AIIMS 2018-19
M-CAPS-05 : CHEMISTRY
CHEMISTRY
(Medical-Classroom Assessment Practice Sheet
Sheet))
ANSWERS
1. (2) (M) 2. (2) (E) 3. (4) (M) 4. (3) (E) 5. (3) (M)
6. (4) (D) 7. (2) (M) 8. (2) (E) 9. (2) (M) 10. (4) (E)
11. (3) (M) 12. (2) (D) 13. (2) (E) 14. (2) (E) 15. (1) (VD)
16. (2) (E) 17. (1) (E) 18. (4) (E) 19. (4) (E) 20. (3) (E)
21. (4) (M) 22. (4) (M)
Question Level Questions Number
Easy (E) – 11 2, 4, 8, 10, 13, 14, 16, 17, 18, 19, 20
Moderate (M) – 08 1, 3, 5, 7, 9, 11, 21, 22
Difficult (D) – 02 6, 12
Very Difficult (VD) – 01 15
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