Chemical Bonds Test 4

Total Questions:50 Total Time: 60 Min

Remaining:

 

Questions 1 of 50

Question:A electrovalent compound is made up of

Answers Choices:

Electrically charged molecules

Neutral molecules

Neutral atoms

Electrically charged atoms or group of atoms

Questions 2 of 50

Question:Electrovalent bond formation depends on

Answers Choices:

Ionization energy

Electron affinity

Lattice energy

All the three above

Questions 3 of 50

Question:The phosphate of a metal has the formula \(MP{O_4}\). The formula of its nitrate will be

Answers Choices:

\(MN{O_3}\)

\({M_2}{\left( {N{O_3}} \right)_2}\)

\(M{\left( {N{O_3}} \right)_2}\)

\(M{\left( {N{O_3}} \right)_3}\)

Questions 4 of 50

Question:In the transition of \(Zn\) atoms to \(Z{n^{ + + }}\)ions there is a decrease in the

Answers Choices:

Number of valency electrons

Atomic weight

Atomic number

Equivalent weight

Questions 5 of 50

Question:An ionic compound is generally a

Answers Choices:

Good electrolyte

Weak electrolyte

Non-electrolyte

Neutral

Questions 6 of 50

Question:What metals combine with non-metals, the metal atom tends to

Answers Choices:

Lose electrons

Gain electrons

Remain electrically neutral

None of these

Questions 7 of 50

Question:Which of the following is least ionic

Answers Choices:

\({C_2}{H_5}Cl\)

\(KCl\)

\(BaC{l_2}\)

\({C_6}{H_5}{N^ + }{H_3}C{l^ - }\)

Questions 8 of 50

Question:Which type of bonding exists in \(L{i_2}O\) and \(Ca{F_2}\) respectively

Answers Choices:

Ionic, ionic

Ionic, covalent

Covalent, ionic

Coordinate, ionic

Questions 9 of 50

Question:The number of electrons involved in the bond formation of \({N_2}\)molecule

Answers Choices:

2

4

6

10

Questions 10 of 50

Question:The electronic configuration of four elements are given in brackets \(L\,\left( {1{s^2},\,\,2{s^2}2{p^1}} \right);\,\,M\,\left( {1{s^2},\,\,2{s^2}\,2{p^5}} \right)\)\(Q\,\left( {1{s^2},\,\,2{s^2}\,2{p^6},\,\,3{s^1}} \right);\,\,R\,\left( {1{s^2},\,\,2{s^2}\,2{p^2}} \right)\) The element that would most readily form a diatomic molecule is

Answers Choices:

Q

M

R

L

Questions 11 of 50

Question:Amongst the following covalent bonding is found in

Answers Choices:

Sodium chloride

Magnesium chloride

Water

Brass

Questions 12 of 50

Question:Indicate the nature of bonding in diamond

Answers Choices:

Covalent

Ionic

Coordinate

Hydrogen

Questions 13 of 50

Question:Hydrogen chloride molecule contains a

Answers Choices:

Covalent bond

Double bond

Coordinate bond

Electrovalent bond

Questions 14 of 50

Question:As compared to covalent compounds, electrovalent compounds generally have

Answers Choices:

Low melting points and low boiling points

Low melting points and high boiling points

High melting points and low boiling points

High melting points and high boiling points

Questions 15 of 50

Question:The number of electrons shared by each outermost shell of \({N_2}\) Is

Answers Choices:

2

3

4

5

Questions 16 of 50

Question:Which of the following substances when dissolved in water will give a solution that does not conduct electricity

Answers Choices:

Hydrogen chloride

Potassium hydroxide

Sodium acetate

Urea

Questions 17 of 50

Question:In \({H_2}{O_2}\), the two oxygen atoms have

Answers Choices:

Electrovalent bond

Covalent bond

Coordinate bond

No bond

Questions 18 of 50

Question:Carbon has a valency of 2 in \(CO\) and 4 in\(C{O_2}\) and \(C{H_4}\). Its valency in acetylene \(\left( {{C_2}{H_2}} \right)\) Is

Answers Choices:

1

2

3

4

Questions 19 of 50

Question:Which of the following contains a coordinate covalent bond

Answers Choices:

\({N_2}{O_5}\)

\(BaC{l_2}\)

\(HCl\)

\({H_2}O\)

Questions 20 of 50

Question:A coordinate bond is formed when an atom in a molecule has

Answers Choices:

Electric charge on it

All its valency electrons shared

A single unshared electron

One or more unshared electron pair

Questions 21 of 50

Question:Which bond angle \(\theta \)would result in the maximum dipole moment for the triatomic molecule \(YXY\)

Answers Choices:

\(\theta = {90^o}\)

\(\theta = {120^o}\)

\(\theta = {150^o}\)

\(\theta = {180^o}\)

Questions 22 of 50

Question:Non-polar solvent is

Answers Choices:

Dimethyl sulphoxide

Carbon tetrachloride

Ammonia

Ethyl alcohol

Questions 23 of 50

Question:Which of the following is non-polar

Answers Choices:

\({H_2}S\)

\(NaCl\)

\(C{l_2}\)

\({H_2}S{O_4}\)

Questions 24 of 50

Question:Which of the following is a polar compound

Answers Choices:

HF

HCl

\(HN{O_3}\)

\({H_2}S{O_4}\)

Questions 25 of 50

Question:The number of sigma and pi bonds in 1-butene-3-yne are

Answers Choices:

5 sigma and 5 pi

7 sigma and 3 pi

8 sigma and 2 pi

6 sigma and 4 pi

Questions 26 of 50

Question:Structure of ammonia is

Answers Choices:

Trigonal

Tetrahedral

Pyramidal

Trigonal pyramidal

Questions 27 of 50

Question:Which one amongst the following possesses an \(sp\) hybridized carbon in its structure

Answers Choices:

\(Ca{I_2}\)

\(C.C{l_2} = C.C{l_2}\)

\(C{H_2} = C = C{H_2}\)

\(C{H_2} = CH - CH = C{H_2}\)

Questions 28 of 50

Question:Number of shared electrons in between carbon-carbon atoms in ethylene molecule is

Answers Choices:

2

4

6

3

Questions 29 of 50

Question:The two types of bonds present in \({B_2}{H_6}\) are covalent and

Answers Choices:

Three centre bond

Hydrogen bond

Two centre bond

None of the above

Questions 30 of 50

Question:The structure of \({H_2}{O_2}\) is

Answers Choices:

Planar

Non-planar

Spherical

Linear

Questions 31 of 50

Question:Which of the following molecule does not show tetrahedral shape

Answers Choices:

\(CC{l_4}\)

\(SiC{l_4}\)

\(S{F_4}\)

\(C{F_4}\)

Questions 32 of 50

Question:Which of the following is not tetrahedral

Answers Choices:

\(SC{l_4}\)

\(SO_4^{2 - }\)

\(Ni{(CO)_4}\)

\(NiCl_4^{2 - }\)

Questions 33 of 50

Question:Which one has \(s{p^2} - \)hybridization

Answers Choices:

\(C{O_2}\)

\({N_2}O\)

\(S{O_2}\)

\(CO\)

Questions 34 of 50

Question:The hybrid state of sulphur in \(S{O_3}\) molecule is

Answers Choices:

\(s{p^3}d\)

\(s{p^3}\)

\(s{p^3}{d^2}\)

\(s{p^2}\)

Questions 35 of 50

Question:Which of the following molecule contains one pair of non-bonding electrons

Answers Choices:

\(C{H_4}\)

\(N{H_3}\)

\({H_2}O\)

\(HF\)

Questions 36 of 50

Question:Of the following compounds, the one having a linear structure is

Answers Choices:

\(N{H_2}\)

\(C{H_4}\)

\({C_2}{H_2}\)

\({H_2}O\)

Questions 37 of 50

Question:The molecular shapes of \(S{F_4},\,C{F_4}\) and \(Xe{F_4}\) are

Answers Choices:

The same with 2, 0 and 1 lone pairs of electrons on the central atom, respectively

The same with 1, 1 and 1 lone pair of electrons on the central atoms, respectively

Different with 0, 1 and 2 lone pairs of electrons on the central atom, respectively

Different with 1, 0 and 2 lone pairs of electrons on the central atom, respectively

Questions 38 of 50

Question:The largest bond angle is in

Answers Choices:

\(As{H_3}\)

\(N{H_3}\)

\({H_2}O\)

\(P{H_3}\)

Questions 39 of 50

Question:The bond order in \(C{H_3}Cl\) ion is

Answers Choices:

1

2

2.5

3

Questions 40 of 50

Question:Which one of the following is paramagnetic

Answers Choices:

\({H_2}O\)

\(N{O_2}\)

\(S{O_2}\)

\(C{O_2}\)

Questions 41 of 50

Question:What is correct sequence of bond order

Answers Choices:

\(O_2^ + > O_2^ - > {O_2}\)

\(O_2^ + > {O_2} > O_2^ - \)

\({O_2} > O_2^ - > O_2^ + \)

\(O_2^ - > O_2^ + > {O_2}\)

Questions 42 of 50

Question:In which of the following pairs molecules have bond order three and are isoelectronics

Answers Choices:

\(C{N^ - }\), CO

\(N{O^ + },\,\,C{O^ + }\)

\(C{N^ - }\), \(O_2^ + \)

CO, \(O_2^ + \)

Questions 43 of 50

Question:Which of the following is paramagnetic

Answers Choices:

\({B_2}\)

\({C_2}\)

\({N_2}\)

\({F_2}\)

Questions 44 of 50

Question:As a result of \(sp\) hybridization, we get

Answers Choices:

Two mutual perpendicular orbitals

Two orbitals at \({180^o}\)

Four orbitals in tetrahedral directions

Three orbitals in the same plane

Questions 45 of 50

Question:The maximum possible number of hydrogen bonds in which an \({H_2}O\) molecule can participate is

Answers Choices:

1

2

3

4

Questions 46 of 50

Question:The boiling point of water is exceptionally high because

Answers Choices:

Water molecule is linear

Water molecule is not linear

There is covalent bond between H and O

Water molecules associate due to hydrogen bonding

Questions 47 of 50

Question:Which one is the highest melting halide

Answers Choices:

\(NaCl\)

\(NaBr\)

\(NaF\)

\(NaI\)

Questions 48 of 50

Question:The enhanced force of cohesion in metals is due to

Answers Choices:

The covalent linkages between atoms

The electrovalent linkages between atoms

The lack of exchange of valency electrons

The exchange energy of mobile electrons

Questions 49 of 50

Question:Which of the following statements is true

Answers Choices:

HF is less polar than HBr

Absolutely pure water does not contain any ions

Chemical bond formation take place when forces of attraction overcome the forces of repulsion

In covalency transference of electron takes place

Questions 50 of 50

Question:Which of the following statements is true about \(\left[ {Cu\,{{\left( {N{H_3}} \right)}_4}} \right]S{O_4}\)

Answers Choices:

It has coordinate and covalent bonds

It has only coordinate bonds

It has only electrovalent bonds

It has electrovalent, covalent and coordinate bonds