Periodic table Quiz-04

Periodic table Quiz-04

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.   In the formation of NaCl by combination of Na and Cl:

•  Sodium and chlorine both lose electrons
•  Sodium and chlorine both gain electrons
•  Sodium loses but chlorine gains electrons
•  Sodium gains but chlorine loses electrons

Solution
(c) NaCl exist as Na^+ Cl^-.

Q2.   Which has higher bond energy and stronger bond?

•  F_2
•  Cl_2
•  Br_2
•  I_2

Solution
(b) Bond energy of Cl_2 is higher among all halogen molecules. B.E. of F_2,Cl_2,Br_2,I_2 are 37,58,46 and 36 kcal mol^(-1) respectively.

Q3.   Which has the largest first ionisation energy?

•  Li
•  Na
•  K
•  Rb

Solution
(a) The ionisation energy of elements decreases down the group.

Q4.   Polarization of electrons in acrolein may be written as:

•  
  
  
  
•  
  
  
  
•  
  
  
  
•  
  
  
  

Solution
(d) O is more electronegative than C.

Q5.   Which has zero dipole moment?

•  ClF
•  PCl_3
•  SiF_4
•  CFCl_3

Solution
(c) SiF_4 has regular tetrahedral geometry.

Q6.   The correct order of ionic radius is

•  Ti^(4+)
•  ^35 Cl^- >^37 Cl^-
•  K^+>Cl^-
•  P^(3+)>P^(5+)

Solution
(d) Ionic radius ∝1/Z_eff Since, P^(5+) has higher Z_eff as compared to P^(3+), it has smaller ionic radii

Q7.   Amongst the following elements the configuration having the highest ionization energy is:

•  [Ne]3s^2 3 p^1
•  [Ne]3s^2 3 p^3
•  [Ne]3s^2 3 p^2
•  [Ar]3d^10 4s^2 4 p^3

Solution
(b) Ionization energy increases along the period and decreases down the group. Also (b) has [Ne] 3s^2,3p^3,i.e., half filled configuration, being more stable and thus, have high ionization energy

Q8.   Which of the following transitions involves maximum amount of energy?

•   M^- (g)→M(g)
•  M(g)→M^+ (g)
•  M^+ (g)→M^(2+) (g)
•  M^(2+) (g)→M^(3+) (g)

Solution
(d) M^(2+)→M^(3+), after the removal of 2e^-, the nuclear charge per electron increases due to which high energy is required to remove 3e^-

Q9.   Which has triangular planar shape?

•  CH_3^+
•  ClO_2^-
•  H_3 O^+
•  ClO_3^-

Solution
(a) CH_3^+ possesses sp^2-hybridization.

Q10.   The hybridization of P in PO_4^(3-) is same as in:

•  I in ICl_4^-
•  S in SO_3
•  N in NO_3^-
•  S in SO_4^(2-)

Solution
(d) P in PO_4^(3-) has sp^3-hybridization like S in SO_4^(2-).