FUNDAMENTAL OF INORGANIC CHEMISTRY

1. The elements with atomic number 9 , 17 , 35, 53 and 85

 

a. heavy metals

 

b. – halogens

 

c. noble  gases

 

d. light metals

 

Correct Option: b

 

 

2. The number of elements present in fifth period of periodic table

 

a. 8

 

b. 18

 

c. 32

 

d. 10

 

Correct Option: b

 

 

3. Which one of the following represent correct order of electronegativities

 

a. P > O > N

 

b. N > P > O

 

c. N> O> F

 

d. O > N> P

 

Correct Option: d

 

 

4. The outermost electronic configuration of most of the electronegative element is

 

a. ns2 , np6

 

b. ns2 , np5

 

c. ns2 , np3

 

d. ns2 , np4

 

Correct Option: b

 

 

5. The most acidic oxide is

 

a. Na2O

 

b. Al2O3

 

c. MgO

 

d. CaO

 

Correct Option: b

 

 

6. Which of the following is a favourable factor for cation formation

 

a. high electronegativity

 

b. small atomic size

 

c. low ionization potential

 

d. high electron affinity

 

Correct Option: c

 

 

7. Which of the followng is inert gas

 

a. O2

 

b. N2

 

c. H2-

 

d. argon

 

Correct Option: d

 

 

8. Which substance does not have  macromolecular structure

 

a. diamond

 

b. graphite

 

c. silicon dioxide

 

d. Nacl

 

Correct Option: d

 

 

9. Which of the following characteristics not associated to ionic substances

 

a. Fragility

 

b. three dimensional structure

 

c. deform when struck

 

d. high melting point

 

Correct Option: c

 

 

10. The structure of IF 5 is based on which configuration

 

a. squere antiprism

 

b. trigonal bipyramidal

 

c. octahedral

 

d. Tetrahedral

 

Correct Option: c

 

 

11. Which of the following molecule is a linear

 

a. ClO2-

 

b. NO2

 

c. NO2+

 

d. H2O

 

Correct Option: c

 

 

12. Which of the following substance does not contain covalent bomd

 

a. PH3

 

b. GeCl4

 

c. H2S

 

d. csF

 

Correct Option: d

 

 

13. Every atom contains electron, protons and neutrons except

 

a. Ordinary hydrogen atom

 

b. Helium atom

 

c. Boron atom

 

d. Carbon atom

 

Correct Option: a

 

 

14. The equilateral shape has

 

a. sp3d hybrid orbital

 

b. sp2 hybrid orbital

 

c. sp hybrid orbital

 

d. sp3 hybrid orbital

 

Correct Option: b

 

 

15. Shape of ammonia molecule

 

a. linear

 

b. trigonal  pyramidal

 

c. tetrahedral

 

d. V- shape

 

Correct Option: b

 

 

16. The shape of molecule ClF3

 

a. tetrahedral

 

b. linear

 

c. T- shape

 

d. triangular planar

 

Correct Option: c

 

 

17. Buffer solution

 

a. resist change in pH

 

b. strong acid

 

c. decrease pH of soluton

 

d. Increase pH of solution

 

Correct Option: a

 

 

18. Which of the follwing substance have highest boiling point

 

a. NH3

 

b. CH4

 

c. HF

 

d. H2O

 

Correct Option: d

 

 

19. During a redox reaction an oxidising agent

 

a. gains electron

 

b. hydrolysed

 

c. oxidised

 

d. lose electrn

 

Correct Option: a

 

 

20. Which of the following is hard acid

 

a. Pd+2

 

b. Hg+2

 

c. H+

 

d. Ag+

 

Correct Option: c

 

 

21. Which of the following is adsorption indicator

 

a. diphenyl benzidine

 

b. methyl orange

 

c. flourescence

 

d. diphenylamine

 

Correct Option: c

 

 

22. A base is a substance  which accepts

 

a. proton

 

b. an electron

 

c. a neutron

 

d. a positron

 

Correct Option: a

 

 

23. Conjugate acid of NH2- is

 

a. NH3

 

b. NH4+

 

c. NH2OH

 

d. N2H4

 

Correct Option: a

 

 

24. Lewis acid also called

 

a. electrophile

 

b. electrophile

 

c. nucleophile

 

d. substrate

 

Correct Option: b

 

 

25. Modern peroidic table is base on function

 

a. nuclear number

 

b. Atomic number

 

c. Atomic mass

 

d. mass number

 

Correct Option: b

 

 

26. E.N value of F

 

a. 4

 

b. 3

 

c. 3.5

 

d. 2

 

Correct Option: a

 

27. Actinides are present in period of periodic table

 

a. 7

 

b. 1

 

c. 5

 

d. 4

 

Correct Option: a

 

 

28. Charge that an atom carries in a molecule

 

a. Oxidation state

 

b. Valency

 

c. reduction state

 

d. electron affinity

 

Correct Option: a

 

 

29. Oxides of non metals are

 

a. super oxide

 

b. acidic

 

c. basic

 

d. amphoteric

 

Correct Option: b

 

 

30. Which of the following has smallest ionic radius

 

a. K+

 

b. Rb+

 

c. Li+

 

d. Na+

 

Correct Option: c

 

 

31. Which electronic sub shell lanthanides have incompletely filled

 

a. 6f

 

b. 5 g

 

c. 4f

 

d. 5f

 

Correct Option: c

 

 

32. Hybridization is a process of mixing of

 

a. atoms

 

b. orbitals

 

c. electrons

 

d. molecules

 

Correct Option: b

 

 

33. Octahedral shape is associated with

 

a. ClF3

 

b. TeF6

 

c. PF5

 

d. SF4

 

Correct Option: b

 

 

34. Which of the follwing substance have least ionic character in its bond

 

a. NaCl

 

b. KCl

 

c. Bacl2

 

d. CCl4

 

Correct Option: d

 

 

35. Which of the following substance is the strongest acid

 

a. CH4

 

b. NH3

 

c. H2O

 

d. HF

 

Correct Option: d

 

 

36. Which of the following is the strongest oxyacid

 

a. H ClO2

 

b. HClO

 

c. HClO4

 

d. HClO3

 

Correct Option: c

 

 

37. Which of the following is Lewis acid

 

a. CH3

 

b. NaH

 

c. BF3

 

d. CCl4

 

Correct Option: c

 

38. How many crystaline form of carbon exist

 

a. 3

 

b. 2

 

c. 4

 

d. 6

 

Correct Option: a

 

 

39. The main global temperature of earth surface is

 

a. 40◦C

 

b. 15◦C

 

c. 25◦C

 

d. 35◦C

 

Correct Option: b

 

 

40. Silicates are chief constituent of

 

a. hemoglobin

 

b. rocks and clay

 

c. chlorophyl

 

d. fertilizers

 

Correct Option: b

 

 

41. Which one  of the following used in lead pencils

 

a. lead

 

b. carbon

 

c. silicon dioxide

 

d. graphite

 

Correct Option: d

 

 

42. The self linkage of an element to form chain or rings is called

 

a. isomorphism

 

b. polymorphism

 

c. catenation

 

d. allotropy

 

Correct Option: c

 

 

43. In the alumino thermite process Al acts as

 

a. dehydrating agent

 

b. reducing agent

 

c. oxidising agent

 

d. flux

 

Correct Option: b

 

 

44. The structure of AlCl3 is dimeric because it is

 

a. salt

 

b. soluble in organic solvent

 

c. electron deficient

 

d. acid

 

Correct Option: c

 

 

45. Oxygen is a gass

 

a. has double bond

 

b. oxygen atom does not catenate

 

c. paramagnetic

 

d. has no d- orbital

 

Correct Option: b

 

 

46. Bleeching action of SO2 is due to

 

a. Oxidation state

 

b. reduction

 

c. hydrolysis

 

d. hydration

 

Correct Option: a

 

 

47. Aq. HF stored in

 

a. gutta- percha bottles

 

b. glass vessels

 

c. copper vessels

 

d. iron vessels

 

Correct Option: a

 

 

48. Which of the following is the most abundant noble gas in the atmosphere

 

a. Neon

 

b. Krypton

 

c. argon

 

d. Helium

 

Correct Option: c

 

 

49. Pyrosilicates are the silicates in which two tetrahedral units are linked at

 

a. four point

 

b. one point

 

c. two point

 

d. three point

 

Correct Option: b

 

 

50. After Hydrogen second most abundant element in the universe

 

a. He

 

b. Ne

 

c. Xe

 

d. Krypton

 

Correct Option: a