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