StudentAidUnit 3: Chemical Bonding — Mcqs
9th Class Chemistry · Unit 3: Chemical Bonding
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MCQ's Question (Exercise)
1.When molten copper and molten zinc are mixed together, they give rise to a new substance called brass. Predict what type of bond is formed between copper and zinc.
2.Which element is capable of forming all the three types of bonds; covalent, coordinate covalent or ionic?
- a Carbon
- b Oxygen
- c Magnesium
- d Silicon
3.Why is H2O a liquid while H2S is a gas?
4.Which of the following bonds is expected to be the weakest?
- a C-C
- b Cl-Cl
- c O-O
- d F-F
5.Which form of carbon is used as a lubricant?
6.Keeping in view the intermolecular forces of attraction, indicate which compound has the highest boiling point.
7.Which metal has the lowest melting point?
8.Which ionic compound has the highest melting point?
9.Which compound contains both covalent and ionic bonds?
10.Which among of the following has a double covalent bond?
Why do atoms form chemical bonds
11.Atoms achieve stability by attaining electronic configuration of:
12.Attaining two electrons in the valence shell is called:
13.All the noble gases have their valence electrons:
14.Noble gases are non-reactive, because they do not:
15.Every atom has a natural tendency to accommodate electrons in its valence shell:
16.Hydrogen and Helium follow:
17.Which of the following atoms obey duplet rule?
18.Which of the following is not true about the formation of Na2S:
19.Octet rule is:
20.Atoms react with each other because:
21.An atom having six electrons in its valence shall will achieve noble gas electronic configuration by:
Ionic Bond
22.Which of the following atoms will form anion of charge -2?
23.The formation of ionic bond between two ions is due to:
24.Which group of the periodic table has the tendency to gain electrons?
25.Which of the following atoms will not form cation or anion?
26.Transfer of electrons between elements result in:
27.When an electronegative element combines with electropositive element, the type of bonding is:
28.Which of the following compounds is non-directional in its bonding?
29.How many electrons are there in the valence shell of sodium atom?
30.The electropositive elements have the tendency to:
31.How many valence shell electrons are there in Na+ ion?
32.During the formation of ionic bond, heat is?
33.Which type of attractive forces are present in ionic compounds:
Covalent Bond
34.Number of electrons in nitrogen molecule is:
35.How many covalent bonds do N2 molecule have?
36.Silicon belongs to Group IVA. It has ____ electrons in the valence shell:
37.Phosphorus belongs to third period of Group VA. How many electrons it needs to complete its valence shell.
38.In the formation of AlF3, aluminum atom loses ____ electrons.
39.Identify the covalent compound:
40.A bond formed between two non-metals is expected to be:
41.A bond pair in covalent molecules usually has:
42.Covalent bond involves the:
43.How many covalent bonds does C2H2 molecule have?
44.Triple covalent bond involves how many electrons?
45.Which pair of the molecules has same type of covalent bonds?
46.Identify the compound which is not soluble in water:
47.Identify which pair has polar covalent bonds:
48.Which one of the following is the weakest force among the atoms?
49.Covalent bond is most commonly found between the elements of group:
50.A bond formed by the mutual sharing an electron pair is called:
51.A covalent bond formed by the mutual sharing of two pairs of electrons between bonded atoms is called:
52.Which molecule contains a single covalent bond?
53.Nitrogen molecule contains:
54.How many electrons are involved in the formation of single covalent bond?
55.A covalent bond formed by two similar atoms is known as:
Coordinate Covalent Bond
56.Dative covalent bond is also known as:
57.Which one of the following in as electron deficient molecule?
58.How many lone pairs are present on nitrogen in ammonia molecule?
59.Which type of bond is present between NH3 and BF3?
Metallic Bond
60.In metals, the hold of nucleus over the valence shell electrons is weak due to:
61.Malleability is the property by virtue of which a metal can be drawn into:
62.Metals have the tendency to lose electrons due to:
Intermolecular Forces of Attraction
63.Hydrogen bonding is always found in:
64.Which of the following is an example of polar covalent compound?
65.The force of attraction between water molecule is:
66.The boiling point of water is:
67.The boiling point of alcohol is:
68.Water has high boiling points as compared to alcohol due to:
69.The density of ice at 0°C is:
70.The density of water at 0°C is:
Nature of Bonding and Properties
71.The compounds formed by opposite charges are known as:
72.Ionic compounds are good conductors electricity in:
73.Ionic compounds have:
74.The melting point of NaCl is:
75.Which of the following is an example of a covalent compound?
76.Non-polar compounds are insoluble in: