FSC 2nd year chemistry 1st chapter MCQs-Periodic classification of elements and periodicity Mcqs

Chapter 1: Periodic classification of elements and periodicity

In this article, the author has explained the most important chemistry MCQs from the first chapter( periodic classification of elements and periodicity ) of FSC 2nd year chemistry. All the correct answers have been bold.

1: Which of the following elements react with steam only?

a) Na

b) Mg

c) K

d) Ca

2: Which of the following has the smallest size?

a) Al

b) Al+

c) Al++

d) Al+++

3: Which of the following set of elements is not transition elements?

a) Ti, Zn, Hf

b) Cu, Ag, Au

c) Ga, In, Tl

d) Ni, Pt, Pd

4: Which of the following is the strongest base?

a) NH3

b) PH3

c) AsH3

d) SbH3

5: Which pair of atomic numbers represent s-block elements?

a) 7, 15

b) 6, 12

c) 9, 17

d) 3, 12

6: 6th period contains transition elements

a) 2

b) 8

c) 16

d) 24

7: Which of the following is not amphoteric oxide?

A) Al2O3

b) PbO

c) ZnO

d) SO2

8: Which of the following elements burns in air to form an oxide which on shaking with H2O gives a solution having pH greater than?

a) carbon

b) Magnesium

c) Sulfur

d) Hydrogen

9: Which of the following properties increases upto the middle of the period and then decreases?

a) Ionization energy

b) Atomic radii

c) Melting and Boiling point

d) Atomic volume

10: When an element M reacts with chlorine, an acidic chloride is formed. What is element M?

a) Hydrogen

b) Sodium

c) Potassium

d) Calcium

11: ionic hydrides react with water to form:

a) Proton

b) Hydride ion

c) Hydroxide ion

d) Hydronium ion

12: Which of the following has the highest melting point?

a) NaCl

b) KCl

c) RbCl

d) CsCl

13: CH4 is a hydride

a) Acidic

b) Basic

c) Amphoteric

d) Neutral

14: Aluminum iodide has a nature

a) Ionic

b) Covalent

c) Polymeric

d) None

15: Which of the following is less basic?

a) MnO

b) MnO2

c) Mn2O3

d) Mn2O7

16: 7th period of the periodic table contains normal elements

a) 2

b) 3

c) 4

d) 8

17: Periodic table has been dived into four blocks, which block contains the highest elements?

a) s

b) P

c) d

d) f

18: The division of elements into blocks in the modern periodic table is based on

a) Shell

b) Sub-shell

c) Both

d) None

19: Keeping in view the size of the atom, which order is the correct one

a) Mg > Sr

b) Ba > Mg

c) Lu > Ce

d) Cl > I

20: Mosley concluded by the X-ray studies of the elements that physical and chemical properties of elements depend upon:

a) Atomic mass

b) Atomic Number

c) Mass Number

d) All

21: Which one of the following is not ionic hydride

a) CsH

b) LiH

c) HCl

d) NaH

22: The element with the highest first ionization energy is

a) B

b) C

c) O

d) N

23: Mark the correct statement

a) Na+ is smaller than Na

b) Na+ is larger than Na

c) Cl is smaller than Cl

d) Cl ion and Cl are equal

24: The element with atomic number 9 is closest in chemical properties with element of atomic number

a) 27

b) 11

c) 17

d) 8

25: Period six in periodic table contain which block elements

a) s, p

b) s, p, d

c) s, p, f

d) s, p, d, f

26: Who introduced the zero group

a) Lother Mayer

b) Mendeleev

c) Ramsay

d) Mosley

27: Elements of group II-B are called

a) Representative elements

b) Transition elements

c) Non-typical transition elements

d) Coinage metal group

28: The elements with lowest Melting point

a) Be

b) Mg

c) Cd

d) Cr

29: Which of the following sets of atoms are arranged in order of decreasing electronegativity?

a) N, O, F

b) Si, P, S

c) F, O, N

d) S, Si, P

30: When hydrogen loses its electron to form H+ ion then it resembles

a) Transition metals

b) Halogen

c) Alkali metals

d) Noble gas

31: Which of the halides show a bridge-type structure

a) NaCl

b) AlCl3

c) CCl4

d) H2O

32: Which element of the following shows max, oxidation state:

a) P

b) S

c) Mn

d) Cr

33: The melting point is highest for the elements of group

a) IA

b) IIA


d) IVA

34: Amphoteric oxide is formed by

a) ca

b) Fe

c) Cu

d) Zn

35: In the long form of the periodic table, the most electropositive elements occupy

a) Bottom right position

b) Bottom left position

c) Top right position

d) Top left position

36: Which of the following is the strongest reducing agent?

a) Cl

b) Ar

c) K+

d) Ca+2

37: Which of the following elements will form the largest ion with noble gas electronic configuration?

a) Aluminum

b) Potassium

c) Phosphorous

d) Sulfur

38: Which of the following oxides has a molecular structure as distinct from a giant structure?

a) Na2O

b) MgO

c) SiO2

d) Cl2O7

39: Which of the following will produce the strongest acid when treated with H2O?

a) SO2

b) P2O5

c) Cl2O7

d) SiO2

40: Which of the following element has oxide with a giant structure and chloride which is readily hydrolyzed?

a) Ba

b) Na

c) Si

d) P

41: Which of the following oxides is unlikely to dissolve an aqueous NaOH?

a) Al2O3

b) MgO

c) SiO2

d) SO2

42: In which of the following pairs, the radius of the second atom is greater than the first?

a) Na, Mg

b) Sr, Ca

c) P, N

d) Cl, Br

43: An element Z has a low proton number. It forms an amphoteric oxide and a chloride which is readily hydrolyzed by water. Which group contains Z?

a) II

b) III

c) IV

d) V