1 : Keeping in view in the intermolecular forces of attraction indicate which compound has the highest boiling points.
A : H2O
B : H2S
C : HF
D : NH3
2 : Which ionic compound has the highest melting point?
A : NaCI
B : KCI
C : LiCI
D : RbCI
3 : Which compound contain both covalent and ionic bounds?
A : MgCI2
B : NH4CI
C : CaO
D : PCI3
4 : Which among the following has a double covalent bond?
A : Ethane
B : Methane
C : Ethylene
D : Acetylene
5 : Which metal has the lowest melting point?
A : Li
B : Na
C : K
D : Rb
6 : Which form of carbon is used as a lubricant?
A : Coal
B : Diamond
C : Graphite
D : Charcoal
7 : Which element is capable of forming all the three types of bonds covalent coordinate covalent and ionic?
A : Carbon
B : Oxygen
C : Magnesium
D : Silicon
8 : Which of the following bonds is expected to be weakest?
A : C - C
B : CI-CI
C : O-O
D : F-F
9 : When molten copper and molten zinc are mixed together they give rise to a new substance called breast predict what type of bond is formed between copper and zinc.
A : Coordinate covalent bond
B : Ionic bond
C : Metallic Bond
D : Covalent bond
10 : Why is H2O a liquid while H2S is a gas?
A : Because in winter the atomic size of oxygen is smaller than that of sulphur
B : Because water is a polar compound and three exist strong process of attraction between its molecules
C : Because H2O molecule is lighter than H2S
D : Because water can easily freezing into ice
11 : Which of the following moleclues has a polar covalent bond?
A : H2
B : CO2
C : HCL
D : O2
12 : Why do covalent compound not conduct in their pure state?
A : They have free electrons
B : They lack free ions or charged particles
C : Their bonds are too strong
D : They are insoluble in water
13 : What type of bond in is present in a moleclues of oxygen?
A : Single covalent bond
B : Double covalent bond
C : Triple covalent bond
D : Ionic bond
14 : Which of the following is an example of a moleclues with a coordinate’s covalent bond?
A : CO
B : H2
C : O2
D : NaCL
15 : Which of the following moleclues contains a covalent bond?
A : NaaCl
B : H2O
C : MgO
D : KBr
16 : How many covalent bond does is a properly of covalent compound?
A : 1
B : 2
C : 3
D : 4
17 : Why are metals malleable and ductile?
A : Their atoms are tightly fixed in posite
B : Their atoms can slide past each other without breaking bonds
18 : What of structure is formed by inoin compounds in the state?
A : Molecular lattice
B : Covalent network
C : Metallic and hydrogen
D : Crystal lattice
19 : Which of the following properly of covalent compound?
A : High melting and boiling points
B : Good electrical conductivity
C : Low melting and boiling points
D : Always soluble in water
20 : What is metallic bond?
A : A bond formed by transferring
B : A bond formed by sharing electrons
C : A bond involving a sea of delocalized electrons
D : A bond between positive and negative ions
21 : Which of the following pairs of elements can formed hydrogen bonds?
A : H and Na
B : H and C
C : H and O
D : H and S
22 : In a coordinates covalent bond, which atom covalent electron pair?
A : The more electronegative atom
B : The less electronegative atom
C : The atom who no valence electrons
D : Both atoms donate equally
23 : What happen in a covalent bond?
A : Electrons are transferred between atoms
B : Electrons are shared between atoms
C : Protons are shared between atoms
24 : What is the coordinate covalent bond?
A : A bond where are equally
B : A bond are where one atom donates both electrons for sharing
C : A bond are where electrons are transferred
D : A bond are where electrons are transferred
25 : What happen in an ionic bond?
A : Electrons are shared equally
B : Electrons are transferred between atomic
C : Electrons are delocalized
D : Protons are exchanged
26 : Which of the following contains a coordinates bond?
A : H2o
B : NH4
C : NaCL
D : CH4
27 : Which property of water is by strong intermolecular hydrogen bonds?
A : High compressibility
B : Low boiling points
C : High boiling points
D : Weak surface tension
28 : What is another name of coordinate covalent bond?
A : Ionic bond
B : Dative bond
C : Metallic bond
D : Polar bond
29 : Why do ionic compounds have high melting points?
A : They have weak intermolecular forces
B : They have strong electrostatic forces between inos
C : They are made of large molecules
D : They are made of large molecules
30 : What is the main effect of hydrogen bonding of water properties?
A : Lower boiling point
B : High boiling point and surface tension
C : Poor solubility in ionic compounds
D : Week intermolecular forces
31 : Which ionic is formed by coordinate covalent bon d in ammonia?
A : NH2
B : NH4
C : NO3
D : N2H4
32 : What is the formula of the ionic compound formed between magnesium and chlorine?
A : MgCl
B : Mg2Cl
C : Mg Cl2
D : Mg2Cl3
33 : What allows metals to conduct electric?
A : Pressure of free protons
B : Delocalized electrons that can move freely
C : Strong covalent bonds
D : Week intermolecular forces
34 : Which of the following moleclues exhibits hydrogen bonding?
A : HCL
B : H2O
C : CH4
D : CO2
35 : What type of bonding is typing found in substances that conduct electricity in molten or aqueous states?
A : Ionic bonding
B : Covalent bonding
C : Metallic bonding
D : Van der Waala bounding
36 : Which properly is explained by metallic bonding?
A : Low density
B : Poor electrical conductivity
C : High thermal conductivity
37 : What are intermolecular orce?
A : Forces with a molecule
B : Forces between within the moleclues of an atom
C : Forces that hold atom tougher in a moleclues
D : Forces between neighboring moleclues
38 : What happen to the charge of a metal atom when it forms an ionic bond?
A : It becomes nature
B : It becomes positively charged action
C : It becomes a negatively charged anion
D : It does not change
39 : Which of the following moleclues hydrogen bonding?
A : HCL
B : CH2
C : NH3
D : CO2
40 : Which of the following fairs of elements is most likely to form an ionic bond?
A : Oxygen and hydrogen
B : Sodium and chlorine
C : Carbon and hydrogen
D : Nitrogen and oxygen
41 : What happen to the coordinate covalent bond once it is a formed?
A : It remains weaker than a normal covalent a bond
B : It behaves like any other covalent bond
C : It break easily under normal conditions
D : It becomes ionic in nature
42 : Which properly is characteristic of ionic compounds?
A : They conduct electricity in the solid state
B : They are usually gass at room tem perature
C : They dissolve in polar solvents like water
D : They are malleable and ductile
43 : Which property most is like associated with substances having covalent bonds?
A : High melting and boiling points
B : Low electricity and conducting soluble in water
C : Metallic luster
D : Soluble in water
44 : What type of intermolecular forces is present in nonpolar molecules like o2 and N2
A : Hydrogen bonding
B : Dipole interactions
C : Dispersion bonding
D : Covalent bonding
45 : What happence to the valence electrons in metallic bonding:
A : They are transferred to non – metals
B : They are fixed to specific atom
C : They form a sea of electron shared by all metal atoms
46 : Which of the following bonds is formed by the transfer of electrons from one atom to another?
A : Another
B : Metabolism
C : Ionic bond
D : Hydrogen bond
47 : Which of the following is a characteristic of metal bonds?
A : Low melting points
B : High electrons thermal conducting
C : Formation of brittle crystals
D : Formation of moleclues with fixed shape
48 : Which of the following is the strongest type of intermolecular force?
A : Dispersion forces
B : Dipode – dipole interactions
C : Hydrogen bonding
D : Van der Waals forces
49 : What cause dipole- dipole interactions
A : Icon formation
B : Attraction between dipoles
C : Attraction between permanent dipole in polar molecules
