-
question_answer1)
The valency of sulphur in sulphuric acid is [NCERT 1974]
A)
2 done
clear
B)
4 done
clear
C)
6 done
clear
D)
8 done
clear
View Solution play_arrow
-
question_answer2)
The number of electrons involved in the bond formation of \[{{N}_{2}}\]molecule [IIT 1980; CPMT 1983, 84, 85; CBSE PMT 1992]
A)
2 done
clear
B)
4 done
clear
C)
6 done
clear
D)
10 done
clear
View Solution play_arrow
-
question_answer3)
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 [NCERT 1983]
A)
Q done
clear
B)
M done
clear
C)
R done
clear
D)
L done
clear
View Solution play_arrow
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question_answer4)
In covalency [CPMT 1974, 76, 78, 81; AFMC 1982]
A)
Electrons are transferred done
clear
B)
Electrons are equally shared done
clear
C)
The electron of one atom are shared between two atoms done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer5)
Which compound is highest covalent
A)
\[LiCl\] done
clear
B)
\[LiF\] done
clear
C)
\[LiBr\] done
clear
D)
LiI done
clear
View Solution play_arrow
-
question_answer6)
The nature of bonding in graphite is [DPMT 1986; CPMT 1986]
A)
Covalent done
clear
B)
Ionic done
clear
C)
Metallic done
clear
D)
Coordinate done
clear
View Solution play_arrow
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question_answer7)
Which of the following substances has giant covalent structure [DPMT 1985, 86; NCERT 1975]
A)
Iodine crystal done
clear
B)
Solid \[C{{O}_{2}}\] done
clear
C)
Silica done
clear
D)
White phosphorus done
clear
View Solution play_arrow
-
question_answer8)
With which of the given pairs CO2 resembles [BHU 2005]
A)
HgCl2, C2H2 done
clear
B)
HgCl2, SnCl4 done
clear
C)
C2H2, NO2 done
clear
D)
N2O and NO2 done
clear
View Solution play_arrow
-
question_answer9)
The electron pair which forms a bond between two similar non-metallic atoms will be [IIT 1986]
A)
Dissimilar shared between the two done
clear
B)
By complete transfer from one atom to other done
clear
C)
In a similar spin condition done
clear
D)
Equally shared in between the two done
clear
View Solution play_arrow
-
question_answer10)
For the formation of covalent bond, the difference in the value of electronegativities should be [EAMCET 1982]
A)
Equal to or less than 1.7 done
clear
B)
More than 1.7 done
clear
C)
1.7 or more done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer11)
Which type of bond is formed between similar atoms
A)
Ionic done
clear
B)
Covalent done
clear
C)
Coordinate done
clear
D)
Metallic done
clear
View Solution play_arrow
-
question_answer12)
Covalent compounds are generally ...... in water [CPMT 1987]
A)
Soluble done
clear
B)
Insoluble done
clear
C)
Dissociated done
clear
D)
Hydrolysed done
clear
View Solution play_arrow
-
question_answer13)
Which one is the electron deficient compound [AIIMS 1982]
A)
\[ICl\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[BC{{l}_{3}}\] done
clear
D)
\[PC{{l}_{3}}\] done
clear
View Solution play_arrow
-
question_answer14)
Which among the following elements has the tendency to form covalent compounds
A)
\[Ba\] done
clear
B)
\[Be\] done
clear
C)
\[Mg\] done
clear
D)
\[Ca\] done
clear
View Solution play_arrow
-
question_answer15)
Silicon has 4 electrons in the outermost orbit. In forming the bonds [EAMCET 1981]
A)
It gains electrons done
clear
B)
It loses electrons done
clear
C)
It shares electrons done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer16)
Which of the following occurs when two hydrogen atoms bond with each others
A)
Potential energy is lowered done
clear
B)
Kinetic energy is lowered done
clear
C)
Electronic motion ceases done
clear
D)
Energy is absorbed done
clear
View Solution play_arrow
-
question_answer17)
A bond with maximum covalent character between non-metallic elements is formed [NCERT 1982]
A)
Between identical atoms done
clear
B)
Between chemically similar atoms done
clear
C)
Between atoms of widely different electronegativities done
clear
D)
Between atoms of the same size done
clear
View Solution play_arrow
-
question_answer18)
Amongst the following covalent bonding is found in [CPMT 1973]
A)
Sodium chloride done
clear
B)
Magnesium chloride done
clear
C)
Water done
clear
D)
Brass done
clear
View Solution play_arrow
-
question_answer19)
Indicate the nature of bonding in diamond [EAMCET 1980; BHU 1996; KCET 2000]
A)
Covalent done
clear
B)
Ionic done
clear
C)
Coordinate done
clear
D)
Hydrogen done
clear
View Solution play_arrow
-
question_answer20)
Octet rule is not valid for the molecule [IIT 1979; MP PMT 1995]
A)
\[C{{O}_{2}}\] done
clear
B)
\[{{H}_{2}}O\] done
clear
C)
\[CO\] done
clear
D)
\[{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer21)
Which of the following compounds are covalent [IIT 1980; MLNR 1982]
A)
\[{{H}_{2}}\] done
clear
B)
\[CaO\] done
clear
C)
\[KCl\] done
clear
D)
\[N{{a}_{2}}S\] done
clear
View Solution play_arrow
-
question_answer22)
Indicate the nature of bonding in \[CC{{l}_{4}}\] and \[2s\] [NCERT 1973]
A)
Covalent in \[CC{{l}_{4}}\] and electrovalent in \[Ca{{H}_{2}}\] done
clear
B)
Electrovalent in both \[CC{{l}_{4}}\] and \[Ca{{H}_{2}}\] done
clear
C)
Covalent in both \[CC{{l}_{4}}\]and \[Ca{{H}_{2}}\] done
clear
D)
Electrovalent in \[CC{{l}_{4}}\] and covalent in \[Ca{{H}_{2}}\] done
clear
View Solution play_arrow
-
question_answer23)
If the atomic number of element \[X\] is 7, the best electron dot symbol for the element is [NCERT 1973; CPMT 2003]
A)
\[X\,\,.\] done
clear
B)
\[.\,\,X\,\,.\] done
clear
C)
\[.\,\,\underset{.}{\overset{.}{\mathop{X}}}\,\,\,:\] done
clear
D)
\[:\,\,\underset{.\,.}{\overset{.\,.}{\mathop{X}}}\,\,\,.\] done
clear
View Solution play_arrow
-
question_answer24)
Which is the most covalent [AFMC 1982]
A)
\[C-O\] done
clear
B)
\[C-Br\] done
clear
C)
\[C-S\] done
clear
D)
\[C-F\] done
clear
View Solution play_arrow
-
question_answer25)
The covalent compound \[HCl\] has the ionic character as [EAMCET 1980]
A)
The electronegativity of hydrogen is greater than that of chlorine done
clear
B)
The electronegativity of hydrogen is equal to that of chlorine done
clear
C)
The electronegativity of chlorine is greater than that of hydrogen done
clear
D)
Hydrogen and chlorine are gases done
clear
View Solution play_arrow
-
question_answer26)
The correct sequence of increasing covalent character is represented by [CBSE PMT 2005]
A)
\[LiCl<NaCl<BeC{{l}_{2}}\] done
clear
B)
\[BeC{{l}_{2}}<NaCl<LiCl\] done
clear
C)
\[NaCl<LiCl<BeC{{l}_{2}}\] done
clear
D)
\[BeC{{l}_{2}}<LiCl<NaCl\] done
clear
View Solution play_arrow
-
question_answer27)
Bond energy of covalent \[O-H\]bond in water is [EAMCET 1982]
A)
Greater than bond energy of \[H-\]bond done
clear
B)
Equal to bond energy of \[H-\]bond done
clear
C)
Less than bond energy of \[H-\]bond done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer28)
Solid \[C{{H}_{4}}\] is [DPMT 1983]
A)
Molecular solid done
clear
B)
Ionic solid done
clear
C)
Pseudo solid done
clear
D)
Does not exist done
clear
View Solution play_arrow
-
question_answer29)
A covalent bond is likely to be formed between two elements which [MP PMT 1987]
A)
Have similar electronegativities done
clear
B)
Have low ionization energies done
clear
C)
Have low melting points done
clear
D)
Form ions with a small charge done
clear
View Solution play_arrow
-
question_answer30)
The bond between two identical non-metal atoms has a pair of electrons [CPMT 1986]
A)
Unequally shared between the two done
clear
B)
Transferred fully from one atom to another done
clear
C)
With identical spins done
clear
D)
Equally shared between them done
clear
View Solution play_arrow
-
question_answer31)
The valency of phosphorus in \[{{H}_{3}}P{{O}_{4}}\]is [DPMT 1984]
A)
2 done
clear
B)
5 done
clear
C)
4 done
clear
D)
1 done
clear
View Solution play_arrow
-
question_answer32)
Which of the following substances has covalent bonding [AMU 1985]
A)
Germanium done
clear
B)
Sodium chloride done
clear
C)
Solid neon done
clear
D)
Copper done
clear
View Solution play_arrow
-
question_answer33)
The covalency of nitrogen in \[HN{{O}_{3}}\] is [CPMT 1987]
A)
0 done
clear
B)
3 done
clear
C)
4 done
clear
D)
5 done
clear
View Solution play_arrow
-
question_answer34)
Hydrogen chloride molecule contains a [CPMT 1984]
A)
Covalent bond done
clear
B)
Double bond done
clear
C)
Coordinate bond done
clear
D)
Electrovalent bond done
clear
View Solution play_arrow
-
question_answer35)
As compared to covalent compounds, electrovalent compounds generally have [CPMT 1990, 94; MP PMT 1997]
A)
Low melting points and low boiling points done
clear
B)
Low melting points and high boiling points done
clear
C)
High melting points and low boiling points done
clear
D)
High melting points and high boiling points done
clear
View Solution play_arrow
-
question_answer36)
The interatomic distances in \[{{H}_{2}}\] and \[C{{l}_{2}}\] molecules are 74 and 198 pm respectively. The bond length of \[HCl\] is [MP PET 1993]
A)
272 pm done
clear
B)
136 pm done
clear
C)
124 pm done
clear
D)
248 pm done
clear
View Solution play_arrow
-
question_answer37)
On analysis, a certain compound was found to contain iodine and oxygen in the ratio of \[254\,\,gm\] of iodine and \[80\,\,gm\] of oxygen. The atomic mass of iodine is 127 and that of oxygen is 16. Which of the following is the formula of the compound [CPMT 1981]
A)
\[IO\] done
clear
B)
\[{{I}_{2}}O\] done
clear
C)
\[{{I}_{5}}{{O}_{2}}\] done
clear
D)
\[{{I}_{2}}{{O}_{5}}\] done
clear
View Solution play_arrow
-
question_answer38)
Ionic and covalent bonds are present in [CBSE PMT 1990; MNR 1990; KCET 2000; UPSEAT 2001]
A)
\[CC{{l}_{4}}\] done
clear
B)
\[CaC{{l}_{2}}\] done
clear
C)
\[N{{H}_{4}}Cl\] done
clear
D)
\[{{H}_{2}}O\] done
clear
View Solution play_arrow
-
question_answer39)
Highest covalent character is found in [EAMCET 1992]
A)
\[Ca{{F}_{2}}\] done
clear
B)
\[CaC{{l}_{2}}\] done
clear
C)
\[CaB{{r}_{2}}\] done
clear
D)
\[Ca{{I}_{2}}\] done
clear
View Solution play_arrow
-
question_answer40)
Among the following which property is commonly exhibited by a covalent compound [MP PET 1994]
A)
High solubility in water done
clear
B)
High electrical conductance done
clear
C)
Low boiling point done
clear
D)
High melting point done
clear
View Solution play_arrow
-
question_answer41)
Atoms in the water molecule are linked by [MP PAT 1996]
A)
Electrovalent bond done
clear
B)
Covalent bond done
clear
C)
Coordinate covalent bond done
clear
D)
Odd electron bond done
clear
View Solution play_arrow
-
question_answer42)
Which is the correct electron dot structure of \[{{N}_{2}}O\]molecule [MP PET 1996]
A)
\[:\,N=N=\underset{.\,.}{\overset{.\,.}{\mathop{O}}}\,\] done
clear
B)
\[:\,N\equiv {{N}^{+}}-\underset{.\,.}{\overset{.\,.}{\mathop{O}}}\,{{:}^{-}}\] done
clear
C)
\[\underset{.\,.}{\overset{.\,.}{\mathop{N}}}\,=\overset{.\,.}{\mathop{N}}\,=\underset{.\,.}{\overset{.\,.}{\mathop{O}}}\,\] done
clear
D)
\[:\,N=N=\underset{.\,.}{\overset{.\,.}{\mathop{O}}}\,:\] done
clear
View Solution play_arrow
-
question_answer43)
A covalent bond between two atoms is formed by which of the following [MP PMT 1996]
A)
Electron nuclear attraction done
clear
B)
Electron sharing done
clear
C)
Electron transfer done
clear
D)
Electrostatic attraction done
clear
View Solution play_arrow
-
question_answer44)
The electronic configuration of a metal \[M\] is \[1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{1}}.\] The formula of its oxides will be [MP PET/PMT 1998]
A)
\[MO\] done
clear
B)
\[{{M}_{2}}O\] done
clear
C)
\[{{M}_{2}}{{O}_{3}}\] done
clear
D)
\[M{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer45)
Which of the following statements regarding covalent bond is not true [MP PET/PMT 1998]
A)
The electrons are shared between atoms done
clear
B)
The bond is non-directional done
clear
C)
The strength of the bond depends upon the extent of overlapping done
clear
D)
The bond formed may or may not be polar done
clear
View Solution play_arrow
-
question_answer46)
If the electronic configuration of \[M=2,\,\,8,\,\,3\] and that of \[A=2,\,\,8,\,\,7,\] the formula of the compound is [Bihar MEE 1996]
A)
\[{{M}_{2}}{{A}_{3}}\] done
clear
B)
\[M{{A}_{2}}\] done
clear
C)
\[{{M}_{2}}A\] done
clear
D)
\[M{{A}_{3}}\] done
clear
E)
\[{{M}_{3}}A\] done
clear
View Solution play_arrow
-
question_answer47)
The table shown below gives the bond dissociation energies \[({{E}_{diss}})\] for single covalent bonds of carbon atoms with element \[A,\,\,B,\,\,C\]and \[D.\] Which element has the smallest atoms [CBSE PMT 1994]
Bond | \[{{E}_{diss}}\,(kJ\,\,mo{{l}^{-1}})\] |
\[C-A\] | 240 |
\[C-B\] | 328 |
\[C-C\] | 276 |
\[C-D\] | 485 |
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
View Solution play_arrow
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question_answer48)
If a molecule \[{{X}_{2}}\] has a triple bond, then \[X\]will have the electronic configuration [CET Pune 1998]
A)
\[1{{s}^{2}}\,\,2{{s}^{2}}\,2{{p}^{5}}\] done
clear
B)
\[1{{s}^{2}}\,\,2{{s}^{2}}\,2{{p}^{3}}\] done
clear
C)
\[1{{s}^{2}}\,2{{s}^{1}}\] done
clear
D)
\[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{1}}\] done
clear
View Solution play_arrow
-
question_answer49)
Which of the following compounds does not follow the octet rule for electron distribution [CET Pune 1998]
A)
\[PC{{l}_{5}}\] done
clear
B)
\[PC{{l}_{3}}\] done
clear
C)
\[{{H}_{2}}O\] done
clear
D)
\[P{{H}_{3}}\] done
clear
View Solution play_arrow
-
question_answer50)
The valency of \[A=3\] and \[B=2\], then the compound is [Bihar MEE 1997]
A)
\[{{A}_{2}}{{B}_{3}}\] done
clear
B)
\[{{A}_{3}}{{B}_{2}}\] done
clear
C)
\[{{A}_{3}}{{B}_{3}}\] done
clear
D)
\[{{A}_{2}}{{B}_{2}}\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer51)
The number of electrons shared by each outermost shell of \[{{N}_{2}}\] is [AFMC 1998]
A)
2 done
clear
B)
3 done
clear
C)
4 done
clear
D)
5 done
clear
View Solution play_arrow
-
question_answer52)
Which of the following substances when dissolved in water will give a solution that does not conduct electricity [JIPMER 1999]
A)
Hydrogen chloride done
clear
B)
Potassium hydroxide done
clear
C)
Sodium acetate done
clear
D)
Urea done
clear
View Solution play_arrow
-
question_answer53)
Which of the following atoms has minimum covalent radius [DPMT 2000]
A)
B done
clear
B)
C done
clear
C)
N done
clear
D)
Si done
clear
View Solution play_arrow
-
question_answer54)
Boron form covalent compound due to [Pb. PMT 2000]
A)
Small size done
clear
B)
Higher ionization energy done
clear
C)
Lower ionization energy done
clear
D)
Both A and B done
clear
View Solution play_arrow
-
question_answer55)
Two elements X and Y have following electron configurations X \[=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}},\,\,4{{s}^{2}}\] and Y \[=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}\] The compound formed by combination of X and Y is [DPMT 2001]
A)
\[X{{Y}_{5}}\] done
clear
B)
\[{{X}_{2}}{{Y}_{5}}\] done
clear
C)
\[{{X}_{5}}{{Y}_{3}}\] done
clear
D)
\[X{{Y}_{2}}\] done
clear
View Solution play_arrow
-
question_answer56)
Covalent compounds have low melting point because [KCET 2002]
A)
Covalent bond is less exothermic done
clear
B)
Covalent molecules have definite shape done
clear
C)
Covalent bond is weaker than ionic bond done
clear
D)
Covalent molecules are held by weak Vander Waal?s force of attraction done
clear
View Solution play_arrow
-
question_answer57)
p and n-type of semiconductors are formed due to [UPSEAT 2002]
A)
Covalent bonds done
clear
B)
Metallic bonds done
clear
C)
Ionic bonds done
clear
D)
Co-ordinate bond done
clear
View Solution play_arrow
-
question_answer58)
Which of the following is Lewis acid [RPET 2003]
A)
\[B{{F}_{3}}\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[P{{H}_{3}}\] done
clear
D)
\[S{{O}_{2}}\] done
clear
View Solution play_arrow
-
question_answer59)
Among the species : \[C{{O}_{2}},C{{H}_{3}}CO{{O}^{-}},\] \[CO,C{{O}_{3}}^{2-},\] HCHO which has the weakest carbon- oxygen bond [Kerala PMT 2004]
A)
\[C{{O}_{2}}\] done
clear
B)
\[C{{H}_{3}}CO{{O}^{-}}\] done
clear
C)
CO done
clear
D)
\[C{{O}_{3}}^{2-}\] done
clear
E)
HCHO done
clear
View Solution play_arrow
-
question_answer60)
Valency of sulphur in \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]is [DPMT 1984]
A)
Two done
clear
B)
Three done
clear
C)
Four done
clear
D)
Six done
clear
View Solution play_arrow
-
question_answer61)
The acid having \[O-O\] bond is [IIT JEE Screening 2004]
A)
\[{{H}_{2}}{{S}_{2}}{{O}_{3}}\] done
clear
B)
\[{{H}_{2}}{{S}_{2}}{{O}_{6}}\] done
clear
C)
\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] done
clear
D)
\[{{H}_{2}}{{S}_{4}}{{O}_{6}}\] done
clear
View Solution play_arrow
-
question_answer62)
The following salt shows maximum covalent character [UPSEAT 2004]
A)
\[AlC{{l}_{3}}\] done
clear
B)
\[MgC{{l}_{2}}\] done
clear
C)
\[CsCl\] done
clear
D)
\[LaC{{l}_{3}}\] done
clear
View Solution play_arrow
-
question_answer63)
Which type of bond is present in \[{{H}_{2}}S\] molecule [MHCET 2003; Pb CET 2001]
A)
Ionic bond done
clear
B)
Covalent bond done
clear
C)
Co-ordinate done
clear
D)
All of three done
clear
View Solution play_arrow
-
question_answer64)
\[{{H}_{2}}S\] is more acidic than \[{{H}_{2}}O\], due to [BVP 2004]
A)
\[O\] is more electronegative than \[S\] done
clear
B)
\[O-H\] bond is stronger than \[S-H\] bond done
clear
C)
\[O-H\] bond is weaker than \[S-H\] bond done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer65)
Which of the following has covalent bond [AFMC 1988; DCE 2004]
A)
\[N{{a}_{2}}S\] done
clear
B)
\[AlC{{l}_{3}}\] done
clear
C)
\[NaH\] done
clear
D)
\[MgC{{l}_{2}}\] done
clear
View Solution play_arrow
-
question_answer66)
The following element forms a molecule with eight its own weight atoms [MHCET 2004]
A)
\[Si\] done
clear
B)
\[S\] done
clear
C)
\[Cl\] done
clear
D)
\[P\] done
clear
View Solution play_arrow
-
question_answer67)
In \[{{H}_{2}}{{O}_{2}}\], the two oxygen atoms have
A)
Electrovalent bond done
clear
B)
Covalent bond done
clear
C)
Coordinate bond done
clear
D)
No bond done
clear
View Solution play_arrow
-
question_answer68)
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 [NCERT 1971]
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
View Solution play_arrow
-
question_answer69)
Number of electrons in the valence orbit of nitrogen in an ammonia molecule are [MH CET 2004]
A)
8 done
clear
B)
5 done
clear
C)
6 done
clear
D)
7 done
clear
View Solution play_arrow
-
question_answer70)
Hydrogen atoms are held together to form hydrogen molecules by [AMU 1982]
A)
Hydrogen bond done
clear
B)
Ionic bond done
clear
C)
Covalent bond done
clear
D)
Dative bond done
clear
View Solution play_arrow
-
question_answer71)
Strongest bond is [AFMC 1987]
A)
\[C-C\] done
clear
B)
\[C-H\] done
clear
C)
\[C-N\] done
clear
D)
\[C-O\] done
clear
View Solution play_arrow
-
question_answer72)
The major binding force of diamond, silicon and quartz is [Kerala CET (Med.) 2002]
A)
Electrostatic force done
clear
B)
Electrical attraction done
clear
C)
Co-valent bond force done
clear
D)
Non-covalent bond force done
clear
View Solution play_arrow
-
question_answer73)
Multiple covalent bonds exist in a molecule of [NCERT 1973]
A)
\[{{H}_{2}}\] done
clear
B)
\[{{F}_{2}}\] done
clear
C)
\[{{C}_{2}}{{H}_{4}}\] done
clear
D)
\[{{N}_{2}}\] done
clear
View Solution play_arrow
-
question_answer74)
Which of the following does not obey the octet rule [EAMCET 1993]
A)
\[CO\] done
clear
B)
\[N{{H}_{3}}\] done
clear
C)
\[{{H}_{2}}O\] done
clear
D)
\[PC{{l}_{5}}\] done
clear
View Solution play_arrow
-
question_answer75)
Which of the following statements is correct for covalent bond [BHU 1997]
A)
Electrons are shared between two atoms done
clear
B)
It may be polar or non-polar done
clear
C)
Direction is non-polar done
clear
D)
Valency electrons are attracted done
clear
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question_answer76)
Among \[Ca{{H}_{2}},N{{H}_{3}},NaH\] and \[{{B}_{2}}{{H}_{6}}\], which are covalent hydride [Orissa JEE 2005]
A)
\[N{{H}_{3}}\ \text{and}\ {{\text{B}}_{\text{2}}}{{H}_{6}}\] done
clear
B)
\[NaH\ \text{and}\ \text{Ca}{{\text{H}}_{\text{2}}}\] done
clear
C)
NaH and \[N{{H}_{3}}\] done
clear
D)
\[Ca{{H}_{2}}\] and \[{{B}_{2}}{{H}_{6}}\] done
clear
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