Question 1

Reagent is used to differentiate between primaryand tertiary alcohols

Accepted Answer

chromic acid

Answer

sulfuric acid

Answer

oxalic acid

Answer

nitric acid

Question 2

The order of element in the Mendeleev periodictable is based on an element’s………….

Accepted Answer

Atomic mass

Answer

Atomic radius

Answer

Chemical symbol

Answer

Atomic number

Question 3

The stability of benzene is generally due to…….

Accepted Answer

Conjugate double bonds (resonance).

Answer

Presence of six carbon atoms.

Answer

none of the above.

Answer

Chair conformation.

Question 4

The IUPAC name......

Accepted Answer

3-methyl-2-propyl-1-pentene

Answer

3-ethyl-2- propyl -1- pentene

Answer

2-propyl-2-methyl - 1- pentene

Question 5

What is the IUPAC name of the molecule shown?

Accepted Answer

5-methyl-1-heptene

Answer

2-ethyl-5-hexene

Answer

5-ethyl-1-hexene

Answer

3-methyl-6-heptene

Question 6

Molecular shapeof carbons with 4 single bonds have the

Accepted Answer

tetrahedral shape

Answer

linear shape

Answer

hexagonal shape

Answer

trigonal planar shape

Question 7

Which of the following is a correct name for the alkane shown:

Accepted Answer

C₃H₈ propane

Answer

C₇H₁₂ heptane

Answer

C₆H₁₂, hexane

Answer

C₄H₈, butane

Question 8

what is UIPAC name for this line-angel structural formula?

Accepted Answer

2,4,5-trimelyIheptane

Answer

4-sec-buty l-2methylpentane

Answer

2,4-dimethyl 1-5-ethylhexane

Answer

2-methy 1-2sec-buty lpentane

Question 9

The IUPAC name of the following compound is:

Accepted Answer

Methylcyclohexane

Answer

Xylene

Answer

Methylbenzene

Answer

Toluene

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