Periodic table Quiz-03

Periodic table Quiz-03

Dear Readers,

NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1.   The correct order of dipole moment is:

•  CH_4
•  NF_3
•  NH_3
•  H_2 O

Solution
(a) Dipole moment of CH_4=0.

Q2.   Which force is strongest?

•  Dipole-dipole forces
•  Ion-ion forces
•  Ion-dipole forces
•  Ion-induced dipole forces

Solution
(b) Coulombic forces are strongest among all .

Q3.   In third row of Periodic Table from Na to Cl

•  Electronegativity increases
•  Electronegativity decreases
•  Ionisation energy decreases
•  Atomic volume increases

Solution
(a)        

Q4.   The shape of ClO_4^- ion is:

•  Square planar
•  Square pyramidal
•  Tetrahedral
•  Trigonal bipyramidal

Solution
(c) ClO_4^- has sp^3-hybridization on Cl atom .

Q5.   Which pair represents isostructural species?

•  CH_3^- and CH_3^+
•  NH_4^+ and NH_3
•  SO_4^(2-) and BF_4^-
•  NH_2^- and BeF_2

Solution
(c) Both SO_4^(2-) and BF_4^- have sp^3-hybridization and are tetrahedral.

Q6.   The smallest among the following ions is

•  Na^+
•  Mg^(2+)
•  Ba^(2+)
•  Al^(3+)

Solution
(d) The size of an species decreases with increasing nuclear charge because the attraction for the electrons increases. Thus, Al^(3+) is smaller in size

Q7.   The correct order of increasing oxidising power is

•   F_2
•  I_2
•  Br_2
•  I_2

Solution
(d) Oxidizing power decreases in a group

Q8.   The structure of ICl_2^- is:

•  Trigonal
•  Octahedral
•  Square planar
•  Distorted trigonal bipyramid

Solution
(d) ICl_2^- has sp^3 d-hybridization and has two bond pairs and three lone pairs of electrons.

Q9.   The outermost electronic configuration of the most electronegative element is

•  ns^2 np^3
•  ns^2 np^4
•  ns^2 np^5
•  ns^2 np^6

Solution
(c) Halogens are most electronegative. Their general configuration is ns^2 np^5

Q10.   The order of stability of metal oxides is

•  Al_2 O_3
•  Cr_2 O_3
•  Fe_2 O_3
•  Fe_2 O_3

Solution
(c) The order of stability matel oxides is as : Fe_2 O_3