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Hello students in the question we are asked to draw a 4 carbon molecule that is a alkyne b carboxylac acid c alcohol and d and ester so let's see each of these options one by one first one is alkyne so first of all let's draw the carbon skeleton carbon carbon carbon carbon now let's fill the hydrogen atoms here we will have 3 hydrogen atoms here we will have 2 hydrogen atoms here also we will have 2 hydrogen atoms and here we will have 3 hydrogen atoms now let's see the second case which is carboxylic acid carboxylic acids will have c -o -o -h groups so let's draw the skeleton c c c c c and we will have a cooh group.
01:22
Now let's fill the hydrogen atoms.
01:25
Here we will have two hydrogen atoms.
01:29
Here also we will have two hydrogen atoms and here we will have three hydrogen atoms.
01:35
So ch3, ch2, ch2 ch2 cooh is an example of a carboxylic acid with 4 carbon atoms.
01:42
Now let's see the third case which is alcohol.
01:50
Alcohol will have a functional group o .h.
01:54
Let's draw the skeleton first.
01:56
C, c, c, and we will have a functional group oh.
02:11
Now let's fill the hydrogen atoms...