Chemical Bonding and Molecular State NDA Questions

NDA Chemistry

Chemical Bonding and Molecular State MCQ Questions


13.
What is the term for a molecule with a positive end and a negative end, due to differences in electronegativity?
A.
Covalent
B.
Polar
C.
Ionic
D.
Hydrolic
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ANSWER :
B. Polar
14.
Give the shape of HC≡N.
A.
Tetrahedral
B.
Parabolic
C.
Curved
D.
Linear
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ANSWER :
D. Linear
15.

Arrange the following functional groups in the order of decreasing priority.
-COOH, -COOR, -CONH₂

A.

-COOH, -COOR, -CONH₂

B.

CONH₂, -COOH, -COOR

C.

COOR, -CONH₂, -COOH

D.

None of these

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ANSWER :

A. -COOH, -COOR, -CONH₂

16.
Which type of bond involves the sharing of electrons between atoms?
A.
Hydrolic bond
B.
Hydrogen Bond
C.
Covalent bond
D.
Ionic Bond
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ANSWER :
C. Covalent bond
17.
What is the term for a compound that has the same molecular formula but a different arrangement of atoms?
A.
Polymer
B.
Isomer
C.
Hydromer
D.
Iconic
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ANSWER :
B. Isomer
18.
What are the physical devices that are used for a better visualisation and perception of three-dimensional shapes of organic molecules called as?
A.
Element models
B.
Atom models
C.
Graphic models
D.
Molecular models
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ANSWER :
D. Molecular models