Periodic Classification Quiz No:10

Question No:1

Assertion (A): Size decreases in the order Pb > Pb2+ > Pb4+
Reason (R): The force of attraction towards nucleus increases

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:2

Assertion (A): Ionization enthalpy is always negative.
Reason (R): Energy is always released when electrons are removed

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:3

Assertion (A): The first ionisation energy of B is less than that of Be
Reason (R) : The penetration ability of s- electrons is higher than that of p- electrons

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:4

Assertion (A): The second ionisation energy of ‘O’ is greater than that of second ionisation energy of ‘N’
Reason (R): The half filled p-orbitals cause greater stability for an atom.

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:5

Assertion (A): The second electron affinity of oxygen is exothermic.
Reason (R): Oxygen is the highest electronegative element

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:6

Assertion (A) : Zn is a transition element.
Reason (R): Elements without incompletely filled d-orbital are called transition elements

[A] Both A and R are true and R is the correct explanation

[B] Both A and R are true but R is not the correct explanation of A

[C] A is true but R is false

[D] A is false but R is true

Question No:7

Modern periodic table is constructed based on

[A] Atomic number

[B] Mass number

[C] Atomic weight

[D] Oxidation number

Question No:8

What is the name of 118 element

[A] Oganesson

[B] Nihonium

[C] Moscovium

[D] Tennessine .

Question No:9

The period that contains only gaseous elements is

[A] 1

[B] 2

[C] 3

[D] 4

Question No:10

The element which belong to 3rd period and IVA group of periodic table is

[A] Silicon

[B] Carbon

[C] Germanium

[D] Tin

Question No:11

Pair of elements with the following atomic numbers have the same chemical properties

[A] 13 & 22

[B] 3&11

[C] 4&24

[D] 2 & 1

Question No:12

The sub-shells filled one by one for 4th period elements are

[A] 3d, 4sand4p

[B] 4s, 4p and 4d

[C] 4s, 3d and 4p

[D] 3d, 4p and 4s

Question No:13

The starting element and last element in the largest period in modern periodic table are

[A] Rb and Xe

[B] Cs and I

[C] Cs and Rn

[D] Fr and Kr

Question No:14

Which of the following has both members from the same period of the periodic table

[A] Na, F

[B] Mg, Ca

[C] Na, Cl

[D] Be, Al

Question No:15

Atomic number of nitrogen is 7. The atomic number of the third member in the same family is

[A] 23

[B] 15

[C] 33

[D] 51

Question No:16

Element with atomic number 38, belongs to

[A] II A group and 5th period

[B] II A group and 2nd period

[C] V A group and 2nd period

[D] III A group and 5th period

Question No:17

Set of elements with the following atomic numbers belong to the same group

[A] 9, 16, 35, 3

[B] 12, 20, 4, 38

[C] 11, 19, 27, 5

[D] 24, 47, 42, 55

Question No:18

Which of the following pairs has both members from the same group of the periodic table?

[A] Mg-Ba

[B] Mg-Na

[C] Mg-Cu

[D] Mg-Cl

Question No:19

The elements with atomic number 10,18,36,54 and 86 are all

[A] Light metals

[B] Inert gases

[C] Halogens

[D] Rare earths

Question No:20

Which of the following pairs has elements containing same number of electrons in the outermost orbit

[A] N,O

[B] Na, Cl

[C] Ca, Cl

[D] Cl, Br