MCQ - Basic Science (Chemistry) 22102 | 1st Year Polytechnic Unit 1 | MSBTE Quiz

Chemistry MCQ Test

1. The outer most orbit of an atom of element is removed, then the remainder is called as
Kernel
Proton
Neutron
Electron

2. The accomplishment of eight electrons in outermost shell of the atom is
Nucleus
Duplet
Triplet
Octet

3. By loss and gain of valency electrons, atom of element forms ________ bond.
Single bond
Electrovalent bond
Co-ordinate bond
Covalent bond

4. The _______ is formed by mutual sharing of electrons.
Electrovalent compound
Ionic compound
Coordinate compound
Covalent compound

5. When electron pair is donated by only one atom, ______ bond is formed.
Co-ordinate bond
Hydrogen bond
Ionic bond
Covalent bond

6. In Calcium chloride molecule, ______ linkage is formed.
No linkage
Electrovalent linkage
Coordinate linkage
Co-ordinate covalent linkage

7. _______ bond is present in Ammonium ion or sulphur dioxide.
Ionic bond
Coordinate bond
Covalent bond
Metallic bond

8. ________ bond is formed by sharing of three pairs of electrons.
Double covalent bond
Electrovalent bond
Triple bond
Triple covalent bond

9. The charge on ions depends on number of loss and gain of ______.
Neutrons
Nucleons
Electrons
Protons

10. The Co-ordinate bond is formed when one atom with a lone pair of electrons combines with ______.
An electron rich other atom
An electron deficient compound
Proton of other atom
Nucleus of atom

11. In magnesium oxide molecule, one atom of oxygen combines with ______ magnesium atom.
Five
Three
Four
One

12. ______ bond is formed by sharing of one pair of electrons.
Double covalent bond
Single covalent bond
Dative bond
Multiple covalent bond

13. The electronic configuration after bond formation is of ______.
Salts
Solutes
Solvents
Noble gases

14. The noble gases such as helium, neon are ______.
Monatomic
Triatomic
Diatomic
Polyatomic

15. ______ show tendency to lose the electrons.
Noble gases
Non-Metals
Metals
None of these

16. ______ accept (or gain) the electrons to complete octet.
Metals
Non-Metals
Inert gases
None of these

17. Due to ______ forces, electrovalent compounds have high melting point.
Strong electrostatic forces
Weak Van der Waals forces
Strong covalent bonds
Weak hydrogen bonds

18. By loss or gain of electrons in electrovalent bond formation, elements acquire a ______.
Noble gas configuration
Non-Metal configuration
Metal configuration
Proton configuration

19. Electrovalent bond is also called as ______.
Ionic bond
Covalent bond
Co-ordinate bond
Metallic bond

20. The electrostatic attraction between cations and anions in electrovalent bonds holds them in ______.
Fixed position
Random position
Loose position
Weak position

21. The ______ bond can form with either same or different atoms.
Ionic bond
Covalent bond
Metallic bond
Hydrogen bond

22. Covalent bond is found in elements with ______ valency.
Single
Multiple
Double
Quadruple

23. Covalent compounds have ______ melting point.
Very high
Low
Very low
Medium

24. The ______ bonding is characteristic of electrovalent compounds.
Hydrogen
Ionic
Covalent
Metallic

25. Covalent bonds are also called as ______.
Molecular bonds
Atomic bonds
Coordinate bonds
Nuclear bonds

26. Electrovalent compounds are usually ______.
Soft
Hard
Gaseous
Liquid

27. The coordination number of Sodium chloride crystal lattice is ______.
Six
Four
Eight
Three

28. Valency of the atom depends on number of ______ electrons.
Protonic
Neutronic
Nucleonic
Valency

29. Compounds of metals with non-metals are usually ______.
Ionic
Covalent
Co-ordinate
Hydrogen bonded

30. The tendency to accept electrons to complete outermost orbit, ______ bond is formed.
Covalent
Ionic
Co-ordinate
Metallic

31. ______ is a property of metal to be drawn into wire.
Ductility
Malleability
Conductivity
Reactivity

32. Sodium has a ______ crystal lattice.
Body centered cubic
Face centered cubic
Simple cubic
Hexagonal

33. ______ is a property of metals to be beaten into sheets.
Ductility
Malleability
Conductivity
Hardness

34. ______ bond is present in NH₃
Ionic
Metallic
Co-ordinate
Covalent

35. Water molecule is ______ in nature.
Symmetrical
Asymmetrical
Co-ordinate
Electrovalent

36. ______ is an exception to octet rule.
Hydrogen
Helium
Argon
Neon

37. Non-metals are ______ in nature.
Electronegative
Electropositive
Metallic
Neutral

38. Metals are ______ in nature.
Electronegative
Electropositive
Neutral
Both