Chemistry MCQ on Periodic Classification of Elements for NEET, JEE, Medical and Engineering Exam 2021
MCQ on Periodic Classification of Elements: Chemistry is considered to be the most scoring subject in NEET JEE Exam. As it is one of the easiest scoring subjects, it is often ignored and undermined a subject. But if you want to get an edge over others, here is a tip, master NEET/JEE Chemistry concepts. Chemistry demands the attention of students in understanding reactions and concrete basic understanding but once done it only gets easier from there. Mastering NCERT syllabus for NEET/JEE Chemistry should be topping your list of to-do for chemistry.
In this post we are providing you MCQ on Periodic Classification of Elements, which will be beneficial for you in upcoming NEET, JEE, Medical and Engineering Exams.
MCQ on Periodic Classification of Elements
Q1. Which one is the most acidic among these? c) Al2O3
a) CaO
b) MgO
c) Al2O3
d) Na2O
Q2. Which of the following statements is incorrect? a) isoelectronic ions belong to the same period
a) isoelectronic ions belong to the same period
b) The covalent radius of iodine is less than its Van der Waal’s radius
c) I.E.1 of O is lower than that of N but I.E.2 O is higher than that of N
d) The enthalpy of N to gain an electron is almost zero but of P is 74.3 kJ mol-1
Q3. Which one will have the highest 2nd ionisation energy? c) 1s2 2s2 2p6 3s1
a) 1s2 2s2 2p4
b) 1s2 2s2 2p6
c) 1s2 2s2 2p6 3s1
d) 1s2 2s2 2p6 3s2
Q4. The correct order of electronegativity is _______. b) F > O > Cl > Br
a) Cl > F > O > Br
b) F > O > Cl > Br
c) F > Cl > Br > O
d) O > F > Cl > Br
Q5. Two different beakers contain M1-O-H, and M2-O-H solutions separately. Find the nature of the two solutions if the electronegativity of M1 = 3.4, M2 = 1.2, O = 3.5, H = 2.1 . b) acidic, basic
a) acidic, acidic
b) acidic, basic
c) basic, acidic
d) basic, basic
Q6. Find the successive elements of the periodic table with ionisation energies, 2372, 520 and 890 kJ per mol respectively. d) He, Li, Be
a) Li, Be, B
b) B, C, N
c) H, He, Li
d) He, Li, Be
Q7. The correct order for the size of I, I+, I– is _______. c) I– > I > I+
a) I > I– > I+
b) I > I+ > I–
c) I– > I > I+
d) I+ > I– > I
Q8. For the same value of n, the penetration power of orbital follows the order. c) f < d < p < s
a) s = p = d = f
b) p > s > d > f
c) f < d < p < s
d) s < p < d < f
Q9. In the modern periodic table, the number of period of the element is the same as _______. c) principal quantum number
a) atomic mass
b) atomic number
c) principal quantum number
d) azimuthal quantum number
Q10. Which of the reactions will need the maximum amount of energy? b) K+ → K+ ++ e–
a) C2+ → C3+ + e–
b) K+ → K+ ++ e–
c) Na → Na+ + e–
d) Ca+ → Ca++ + e
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