Table:
0
A
B
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E
F
1
Chemical class
Group
Formula
Prefix
Suffix
Example
2
haloalkane
halo
RX
halo-
alkyl halide
Chloroethane (Ethyl chloride)
3
fluoroalkane
fluoro
RF
fluoro-
alkyl fluoride
Fluoromethane (Methyl fluoride)
4
chloroalkane
chloro
RCl
chloro-
alkyl chloride
Chloromethane (Methyl chloride)
5
bromoalkane
bromo
RBr
bromo-
alkyl bromide
Bromomethane (Methyl bromide)
6
iodoalkane
iodo
RI
iodo-
alkyl iodide
Iodomethane (Methyl iodide)

Questions and formulas:
Question: What prefix has Haloalkane as the chemical class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="haloalkane"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="haloalkane"),4))
Level: medium
Question: Which example has rx as the formula?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="rx"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="rx"),6))
Level: medium
Question: Which chemical class uses the example Chloroethane (ethyl chloride)?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="chloroethane (ethyl chloride)"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,F2:F6="chloroethane (ethyl chloride)"),1))
Level: medium
Question: What prefix has Bromo as the group?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="bromo"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="bromo"),4))
Level: medium
Question: What is the chemical class for ri?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="ri"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="ri"),1))
Level: medium
Question: What prefix has chemical class Iodoalkane?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="iodoalkane"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="iodoalkane"),4))
Level: medium