Introduction to Organic Compounds Flashcards
1
Q
- Which among the following chemical bond were
described by Kossel and Lewis?
a) Metallic bond
b) Polar covalent bond
c) Coordinate bond
d) Ionic and Covalent bond
A
d) Ionic and Covalent bond
2
Q
- Which among the following is not a property of Ionic
bond?
a) Losing of electrons
b) Gain of electrons
c) Sharing of electrons
d) Transfer of electrons
A
c) Sharing of electrons
3
Q
- Which among the following formation is not an example of Covalent bond?
a) LiF
b) NH3
c) CF4
d) HF
A
a) LiF
4
Q
- If a bond is made up of a large number of organic
compound, then the bond is termed as?
a) Ionic bond
b) Metallic bond
c) Covalent bond
d) Dipolar bond
A
c) Covalent bond
4
Q
- State whether the given statement is true or false “Ionic bonds are non-directional”
a) True
b) False
A
a) True
4
Q
- Which among the following is not an example of
hydrogen bond?
a) H20
b) Liquid HCl
c) NH3
d) CHCl3
A
b) Liquid HCl
5
Q
- Which among the following is both a molecule and a
compound?
a) C6 H12 O6
b) H2O
c) CO2
d) NaCl
A
b) H2O
6
Q
- Atoms undergo bonding in order to ?
a) Attain stability
b) Lose stability
c) Move freely
d) increase energy
A
a) Attain stability
6
Q
- Potassium Ion K+ has the same electronic configuration as that of which noble gases mentioned below ?
a) Krypton
b) Xenon
c) Argon
d) Radon
A
c) Argon
6
Q
- An atom differs from its ion in which among the
following ?
a) Mass number
b) Atomic number
c) Neutrons
d) Number of protons
A
d) Number of protons
7
Q
- The electronegativity difference between the covalently bonded atoms is
a) Less than 0
b) 0-0.3
c) 0.3-1.7
d) Over 1.7
A
b) 0-0.3
7
Q
- What is the hybridization of Carbon atom in CF4?
a) sp2
b) sp
c) sp3d
d) sp3
A
d) sp3
7
Q
- Bond energy and the corresponding bond length vary directly with each other. comment whether the statement is true or false.
a) True
b) False
A
b) False
8
Q
- The energy which must be transferred to any atom to dislodge an electron is called?
a) Free energy
b) Ionization Energy
c) Quantum mechanical energy
d) Dissociation Energy
A
b) Ionization Energy
9
Q
- In which molecule there is a complete linear
arrangement of all atoms?
a) BF_3
b) NH_3
c) CO_2
d) CH_4
A
c) CO_2
9
Q
- Ten covalent bonds in the Lewis structure of Propane will account for how many valence electrons?
a) 10
b) 20
c) 14
d) 12
A
b) 20
9
Q
- Which one have both sigma and pi bonds?
a) H2S
b) NO2
c) HClO
d) NaCN
A
d) NaCN
10
Q
- What is the hybridization of oxygen in water?
a) sp
b) sp2
c) sp3
4) sp3d
A
c) sp3
11
Q
- Which one has zero dipole moment?
a) C6H6
b) NH3
c) H2S
d) NO
View An
A
a) C6H6
12
Q
- What is the hybridization of sulphur in H2S?
a) sp
b) sp2
c) sp3
d) sp3d
A
c) sp3
13
Q
- PH3, So3, and HF are examples of polar molecules. State true or false
a) True
b) False
A
b) False
14
Q
- Name the geometry of the central oxygen atom in the ozone molecule (o3)
a) Trigonal planar
b) Linear
c) Tetrahedral
d) Pyramidal
A
a) Trigonal planar
15
Q
- Choose the one which is incorrect
a) BrO_4 – tetrahedral
b) PF_3 – pyramidal
c) ClO_4 – tetrahedral
d) BeBr_2 – linear
A
b) PF_3 – pyramidal
16
Q
- Which among the following is not a physical property?
a) Melting point
b) Boiling point
c) Solubility
d) Reactivity
A
d) Reactivity
17
Q
- A crystalline solid possess which one of the following
property?
a) Irregularity
b) Non- symmetric
c) Perfect geometric pattern
A
c) Perfect geometric pattern
18
Q
- Melting is process which can be stated by the below
statements except,
a) Change from a highly disordered stated to an ordered state
b) Change from particles in crystal lattice to liquid state
c) Thermal energy of particles overcome the
intercrystalline forces that hold them
d) Change from low temperature to high temperature
A
a) Change from a highly disordered stated to an ordered state
19
Q
- Which among the following is not associated with
intermolecular forces?
a) They hold neutral molecules
b) Non- electrostatic in nature
c) attraction of oppositely charged particles
d) dipole-dipole interaction and van der Waals forces
A
b) Non- electrostatic in nature
20
Q
- Which among the following statement is not true?
a) In liquid, particles are less regularly arranged and are
free to move
b) Boiling involves breaking up of group of molecules in liquid
c) Boiling involves clubbing of oppositely charged ions
d) Thermal energy of particles overcome cohesive forces that hold them
A
c) Boiling involves clubbing of oppositely charged ions
20
Q
- When one of the Hydrogen in Methane( CH4) is
replaced by a hydroxyl group, then structurally methane resembles?
a) Methanol
b) Ethanol
c) Water
d) Both methanol and water
A
21
Q
- Which among the following does not match with the term solubility?
a) The structural units get separated from each other
b) The ion-dipole bond is very strong
c) The spaces in between the structures are occupied by solvent molecules
d) The electrostatic attraction between the oppositely
charged ions and their corresponding ends are called iondipole bond
A
b) The ion-dipole bond is very strong
22
Q
- Select the one which is wrongly mapped
a) Sodium carbonate – Washing soda
b) Sodium chloride – common salt
c) Calcium carbonate – slaked lime
d) Sodium hydroxide – caustic soda
A
c) Calcium carbonate – slaked lime
22
Q
- Which one is correctly matched?
a) Acids – pH range above7
b) Acids – pH range below 7
c) Acids – pH range 7( neutral)
d) Acids – pH range 8-9
A
b) Acids – pH range below 7
23
Q
- A Strong acid is same as concentrated acid. State true or false
a) False
b) True
A
a) False
23
Q
- When an acid reacts with a metal, which one of the
following gas is usually liberated?
a) ammonia gas
b) chlorine
c) oxygen
d) Hydrogen gas
A
d) Hydrogen gas
24
Q
- MgO + 2HCl —-> X + H2O
a) Mg2Cl
b) 2MgCl
c) MgCl
d) MgCl2
A
d) MgCl2
25
Q
- Select the one which is neither an acid nor base
a) CH3COOH
b) HCl
c) KCl
d) CH3OH
A
c) KCl