InstaQB

Home
Institutions
- Institutions
  
  Polytechnic Colleges
  
  Medical Colleges
  
  Arts & Science Colleges
  
  Universities
  
  Engineering Colleges
  
  Agricultural Colleges
  
  Research Institute
  
  Law Colleges
  
  Audiology and Speech Colleges
  
  Business & Management colleges
  
  Nursing colleges
  
  Hotel Management institutes
  
  Aeronautical Colleges
  
  Bachelor's Degree
Syllabus
Courses
Stateboard
- 12th Standard English Medium
  
  Maths
  
  Physics
  
  Chemistry
  
  Biology
  
  Computer Science
  
  Business Maths
  
  Economics
  
  Commerce
  
  Accountancy
  
  History
  
  Computer Applications
  
  Computer Technology
  12th Standard Tamil Medium
  
  உயிரியல்
  
  கணினி பயன்பாடுகள்
  
  கணினி அறிவியல்
  
  வணிகக் கணிதம்
  
  வணிகவியல்
  
  பொருளியல்
  
  கணிதவியல்
  
  வேதியியல்
  
  இயற்பியல்
  
  கணினி தொழில்நுட்பம்
  
  வரலாறு
  
  கணக்குப்பதிவியல்
  11th Standard English Medium
  
  Maths
  
  Commerce
  
  Economics
  
  Biology
  
  Business Maths
  
  Accountancy
  
  Computer Science
  
  Physics
  
  Chemistry
  
  Computer Applications
  
  History
  
  Computer Technology
  
  Bio - Zoology
  11th Standard Tamil Medium
  
  கணிதவியல்
  
  உயிரியல்
  
  பொருளியல்
  
  இயற்பியல்
  
  வேதியியல்
  
  வணிகக் கணிதம்
  
  கணினி அறிவியல்
  
  கணக்குப்பதிவியல்
  
  வணிகவியல்
  
  கணினி பயன்பாடுகள்
  10th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  
  9th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  
  8th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  7th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
ICSE/ISC
- Class XII
  
  Mathematics
  
  Physics
  
  Accountancy
  
  Biology
  
  History
  
  Geography
  
  Psychology
  
  chemistry
  
  Economics
  
  Computer Science
  
  Political Science
  
  Business Studies
  Class XI
  
  Accountancy
  
  Chemistry
  
  Mathematics
  
  Biology
  
  Geography
  
  Physics
  
  History
CBSE
- 12Th Standard
  
  Physics
  
  Chemistry
  
  Maths
  
  Biology
  
  History
  
  Economics
  
  Commerce
  
  Geography
  
  Socialogy
  
  Business Studies
  
  Computer Science
  
  Biotechnology Class
  
  Political Science
  
  Home Science
  11Th Standard
  
  Physics
  
  Chemistry
  
  Maths
  
  Biology
  
  History
  
  Economics
  
  Commerce
  
  Socialogy
  
  Business Studies
  
  Geography
  
  Home Science
  
  Computer Science
  
  Biotechnology Class
  
  Political Science
  10Th Standard
  
  Physics
  
  Chemistry
  
  Biology
  
  Mathematics
  
  Economics
  
  Geography
  
  History & Civics
  
  Computer Application
  9Th Standard
  
  Physics
  
  Chemistry
  
  Biology
  
  mathematics
  
  Computer Application
  
  Economics
  
  Geography
  
  History & Civics

11th Chemistry Monthly Test - 1 ( Chemical bonding )

MABS Institution

11th Chemistry Monthly Test - 1 ( Chemical bonding )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Some of the following properties of two species, NO₃^- and H₃O⁺ are described below. which one of them is correct?

dissimilar in hybridisation for the central atom with different structure
isostructural with same hybridisation for the Central atom
different hybridiration for the central atom with same structure
none of these

Hybridisation of central atom in PCl₅involves the mixing of orbitals

s, p_x, p_y, d_x2 , d_x2-y2
s, p_x . p_y, p_xy . d_x2-y2
s, p_x, p_y, p_z, d_x2-y2
s, p_x, p_y, d_xy, d_x2-y2

How many unpaired electrons are present in oxygen molecule?

0
1
2
3

The types of hybridiration on the five carbon atom from right to left in the, 2,3 pentadiene.

sp³, sp², sp, sp², sp³
sp³, sp, sp, sp, sp³
sp², sp, sp²,sp², sp³
sp³, sp³, sp², sp³, sp³

Identify the incorrect statement regarding the molecule xeO₄.

XeO₄molecule is tetrahedral
XeO₄ molecule is square planar
There are four p\(\pi\)-d\(\pi\) bonds
There are four sp³ - p, s bonds

Shape and hybridisation of IF₅ are

Trigonal bipyramidal, Sp³d²
Trigonal bipyramidal, Sp³d
Square pyramidal, Sp³d²
Octahedral, Sp³d²

Pick out the molecule having double bond.

O₂
N₂
He₂
H₂

Which of the following is not true about covalent compounds?

They undergo molecular reactions
They possess low melting and boiling points
They undergo ionic reactions
They exhibit isomerism

Paramagnetism is due to the presence of ___________electrons.

paired
unpaired
partially filled
fully filled

Which one of the following is the correct increasing order of bond angle?

H₂O<CH₄<BF₃<BeCl₂
BeCl₂<BF₃<CH₄<H₂O
BF₃<CH₄<BeCl₂<H₂O
CH₄<BeCl₂<H₂O<BF₃

Part - B

Generic 2 - Answer All Question

Give reason behind the lustrous nature, high melting point and boiling point of metals?

H₃PO₃ can be represented by structures I and II shown below, can these two structures be taken as the canonical forms of the resonance hybrid representing H₃P0₃? If not, give reasons for the same.

Explain the bond formation of fluorine molecule.

How is the sequence of energy levels of molecular orbitals written in case of heavier diatomic molecules?
Except Cu, Ag and Au, most metals are black. Why?

Explain the equal bond lengths of C-O bonds in \({ CO }_{ 3 }^{ 2 }\) ion.

What is dipole moment?

How many \(\sigma\) and \(\pi\) bonds are present in each of the following molecules?
(i) CH₃-CH₂-C^oN
(ii) CH₂=C=CH₂

Define bond length.

In CH₄, NH₃ and H₂O, the central atom undergoes sp³ hybridisation - yet their bond angles are different. why?

Part - C

Generic 3 - Answer All Question

Write Lewis dot symbols for atoms of the following elements: Mg, Na, B, 0, N, Br.

(i) Calculate the bond order of H₂ and B₂
(ii) Show how the bond order is related to stability and bond length of the molecule.

Distinguish between a sigma bond and a pi bond.

Draw and explain the M.O. diagram of lithium molecule.

What are the main postulates of Valence Shell Electron Pair Repulsion (VSEPR) theory?

What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.
What is covalent bond? Give suitable examples to represent single, double and triple covalent bonds.

Answer briefly,
(i) Arrange the following compounds as per their increasing covalent character and give reason. MgCI₂, NaCI, AICI₃
(ii) NaCI is less covalent than LiCI- Justify.
(ill) Compare the covalency of CuCI and NaCI

Write Lewis symbols for the following atoms and ions: S and S^2--;Al and Al³⁺; Hand H^-

Explain why BeH2 molecule has a zero dipole moment although the Be - H bonds are polar.

Part - D

Generic 5 - Answer All Question

(i) Define coordinate covalent bond.
(ii) Illustrate the formation of coordinate covalent bond with a suitable example.

Write the resonating structures for the following molecules
1. N₂O
2. CO₂
3. Benzene
4.\({ CO }_{ 3 }^{ 2- }\)
5.O₃

Explain about metallic bonding

Discuss the salient features of VBT.

Define ionic bond. Give suitable examples and distinguish between covalent bond and ionic bond.

(i) What is an ionic bond?
(ii) Explain about the formation of ionic bond with a suitable example.

Comment and explain your observation obtained from the above graph.
Explain about the salient features of molecular orbital theory.

Categorise the molecules which disobey the octet rule and explain them with suitable example.

(i) What is meant by covalent bond?
(ii) Explain the covalent bonding in H₂, O_2,Nr

Comment

Add Comment

Tamilnadu Stateboardszs - Class