Free Printable classification

1.

1.Elements for which place was left in periodic table by Mendeleeff and discovered later are :

a)

(a)Sc, Ga & He

b)

(b) U, La & Ce

c)

(c) Ga, In & Po

d)

(d) Sc, Ga & Ge

2.

2. In the long form of periodic table all the non-metals are placed under ?

a)

(a) s-block

b)

(b) p-block

c)

(c) f-block

d)

(d) d-block

3.

3. Which of the following pairs belong to the same group ?

a)

(a) Elements with atomic numbers 17 and 38

b)

(b) Elements with atomic numbers 20 and 40

c)

(c) Elements with atomic numbers 17 and 53

d)

(d) Elements with atomic numbers 11 and 33

4.

4.Each period in the periodic table starts with a subshell of the new shell and ends with ?

a)

( a ) Same subshell

b)

( b ) Different subshell of the same shell

c)

( c ) The next higher shell

d)

( d ) p-subshell of the same shell

5.

5.Which pair of elements are chemically most similar?

a)

(a) Na, K

b)

(b) Cu, Ag

c)

(c) Ti, Zr

d)

(d) Zr, Hf

6.

6.Which of the following statement is false ?

a)

( a )Elements of group 11 and group 12 are transition elements.

b)

( b )Elements of group 15 do not contain metalloids.

c)

( c )Elements of I-A and II-A group are normal elements.

d)

( d )Elements of group 14 are neither strongly electronegative nor strongly electropositive.

7.

7.Which is correct about actinides ?

a)

(a)These are synthetic elements.

b)

(b)These include element having atomic no. 104.

c)

(c)These show variable valence.

d)

(d)These have only short lived isotopes.

8.

8. Which pair of atomic numbers represent s-block elements ?

a)

(a) 7, 15

b)

(b) 6, 12

c)

(c) 9, 17

d)

(d) 3, 4

9.

9.The first element of each period in the periodic table has ?

a)

(a) Two electrons in the first shell

b)

( b ) One electron in the first shell

c)

( c ) One s-electron in the outermost shell

d)

( d ) 8 electrons in the outermost shell

10.

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

a)

(a) Cu, Zr

b)

(b) Na, Al

c)

(c) As, Bi

d)

(d) Pb, Sb

11.

11.In the periodic table, neighbouring element generally more related to properties than the farther away. Can you pick the false one front following family of related elements ?

a)

(a) O, C, P

b)

(b) Fe, Co, Ni

c)

(c) Cl, Br, I

d)

(d) Cr, Mo, W

12.

12.Which of the following groups may conta metalloid ?

a)

(a) 1

b)

(b) 2

c)

(c) 16

d)

(d) 17

13.

13.In VI period and Gr.III of periodic table foil elements are placed which are called ?

a)

(a)Rare earths

b)

(b)Transition elements

c)

(c)Representative elements

d)

(d)d-block elemi

14.

14.An element belongs to period III and group 15 its electronic configuration is ?

a)

(a) Is² 2s² 2p³

b)

(b) Is² 2s² 2p⁵

c)

(c) Is² 2s² 2p⁶ 3s² 3p³

d)

(d) Is² 2s² 2p⁶ 3s² 3p⁵

15.

15.The elements which exhibit both vertical! horizontal similarities are ?

a)

(a)Lanthanides

b)

(b)Representative elements

c)

(c) Transition elements

d)

(d)Typical elements

16.

16.The element having highest -ve electron gain enthalpy is ?

a)

(a) F

b)

(b) Cl

c)

(c) O

d)

(d) N

17.

17.Maximum density of a metal which is liquid at room temperature ?

a)

(a) Hg

b)

(b) Cs

c)

(c) Au

d)

(d) Fe

18.

18.The electronic configurations of some elements are given below. Which of these elements have the lowest ionization enthalpy ?

a)

(a) Is²,2s² , 2p³

b)

(b) Is²,2s² , 2p⁵

c)

(c) Is² , 2s²,2p⁶

d)

(d) Is² , 2s², 2p⁶ , 3s¹

19.

19.Metal which is not liquid at 30°C ?

a)

(a) Mercury

b)

(b) Gallium

c)

( c ) Cesium

d)

(d) Indium

20.

20.Select the correct statement ?

a)

(a) The ionization enthalpy of hydrogen is greater than He

b)

(b) The ionization enthalpy of fluorine is highest of all the known elements

c)

(c) The ionization enthalpy of Francium is expected to be lowest of all the known elements

d)

(d) In a period the highest ionization potential is of halogen,

21.

21.The correct order of second ionization enthalpy of carbon, nitrogen, oxygen and fluorine is ?

a)

(a)C > N > O > F

b)

(b) O > N > F > C

c)

(c) O > F > N > C

d)

(d) F > O > N > C

22.

22. Pauling’s electronegativity scale is based on experimental value of ?

a)

(a)Atomic radfi

b)

(b)Bond energies

c)

(c) Bond length

d)

(d) Electron affinity

23.

23.The ionization energy of nitrogen is larger than that of oxygen. It is because of ?

a)

(a)Greater attraction of electrons by the nucleus

b)

(b)Small size of N-atom

c)

(c)Extra stability of the half-filled p-orbitals

d)

(d)Very less reactivity of nitrogen

24.

24.The first ionisation potentials (in eV) of nitrogen and oxygen atoms are respectively given by ?

a)

(a)14.6, 13.6

b)

(b) 13.6, 14.6

c)

(c) 13.6,13.6

d)

(d) 14.6, 14.6

25.

25.Δ _i H _i of the elements is plotted against their atomic number. True statement is ?

a)

(a)alkali metals are found at trough

b)

(b)inert gases are at peaks

c)

(c)alkaline earth metals are at peak

d)

(d)Halogen are present at trough

26.

26.Anion/cation ratio is minimum for ?

a)

(a)Lil

b)

(b) LiF

c)

(c) KC1

d)

(d) CsF

27.

27.Anion/cation ratio is maximum for :

a)

(a) Lil

b)

(b) LiF

c)

(c) KC1

d)

(d) CsF

28.

28. The first ionisation enthalpy of Na, Mg, Al and Si are in the order :

a)

(a) Na < Mg > Al < Si

b)

(b) Na >Mg > Al > Si

c)

(c) Na < Mg < Al > Si

d)

(d) Na > Mg> Al< Si

29.

29.The electronegativity of C, N, P and Si increases in the order ?

a)

(a) C, N, Si, P

b)

(b) N, Si, C, P

c)

(c) Si, P, C, N

d)

(d) P, Si, N, C

30.

30.Atomic radii of fluorine and neon in Angstrom units are respectively given by?

a)

(a) 0.72, 1.60

b)

(b) 1.60, 1.60

c)

(c) 0.72, 0.72

d)

(d) None of the values

31.

31.The second ionisation enthalpy of N and O in electron volt are respectively given by ?

a)

(a) 29, 29

b)

(b) 34, 34

c)

(c) 29, 34

d)

(d) 34, 29

32.

32.Which is neutral oxide among the following ?

a)

(a) NO

b)

(b) N₂O

c)

(c) CO

d)

(d) All

33.

33.Strongest reducing agent among the following is?

a)

(a) Na

b)

(b) Mg

c)

(c) Al

d)

(d) K

34.

34.In which of the following AjH₂ is higher than its I and III ?

a)

(a) K

b)

(b) Cl

c)

(c) Cl^-

d)

(d) Ar

35.

35.In a period in the periodic table, as the atomic number increases ?

a)

(a) The electronegative nature goes on increasing

b)

(b) The electropositive nature goes on increasing

c)

(c) The chemical reactivity goes on increasing

d)

(d) The chemical reactivity goes on decreasing

36.

36.With increase in atomic number in a period ?

a)

(a) The number of oxidation states that an element shows in its compounds increases

b)

(b)Electropositive character increases

c)

(c)Electropositive character decreases

d)

(d)Metallic character increases

37.

37.In the series C, N, O and F, the electronegativity?

a)

(a)Decreases from C to F

b)

(b)Increases from C to F

c)

(c)Remains constant

d)

(d)Decreases from C to O and then increases

38.

38.Generally the first ionisation energy is smallest for the atom with electronic configuration?

a)

(a) ns² np³

b)

(b) ns² np⁴

c)

(c) ns² np⁵

d)

(d) ns² np⁶

39.

39.In a period, the alkali metals have ?

a)

(a)Highest ionisation energy

b)

(b)Largest atomic radii

c)

(c)Highest density

d)

(d)Highest electronegativity

40.

40.Which indicates the correct variation in electronegativities ?

a)

(a) F > N < O > C

b)

(b) F > N > O > C

c)

(c)F < N < O < C

d)

(d) F > N > O < C

41.

41.The first ionisation energy of lithium is ?

a)

(a) Greater than Be

b)

(b) Less than Be

c)

(c) Equal to sodium

d)

(d) Equal to fluorine

42.

42.The correct order of atomic size is ?

a)

(a) Be > C > F > Ne

b)

(b) Be < C < F < Ne

c)

(c) Be > C > F < Ne

d)

(d) F > Ne < Be < C

43.

43.Which of the following set of elements have strong tendency to form anions ?

a)

(a) P, S, Cl

b)

(b) As, Sb, Bi

c)

(c) Fe, Co, Ni

d)

(d) Li, Be,

44.

44.Which of the following is an amphoteric oxide ?

a)

(a) MgO

b)

(b) P₂O₅

c)

(c) A1₂O₃

d)

(d) SiO₂

45.

45.The most acidic of the following oxides is :

a)

(a) B₂O₃

b)

(b)CO₂

c)

(c) As₂O₅

d)

(d)Cl₂O₇

classification

Total questions: 45

Worksheet time: 45mins

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