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प्रश्न
Draw the structural formula of a compound with two carbon atoms in the following case:
An alcohol containing two carbon atoms.
उत्तर
Ethanol
\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{.....}\\
|\phantom{....}|\phantom{.....}\\
\ce{H - C - C - O - H}\\
|\phantom{....}|\phantom{.....}\\
\ce{H}\phantom{...}\ce{H}\phantom{.....}\\
\end{array}\]
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संबंधित प्रश्न
Fill in the blanks from the choices given within brackets:
The basicity of acetic acid is-------- (3, 1, 4).
When zinc powder is added to acetic acid ______________
(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom
Fill in the following blank with suitable word:
The next higher homologue of ethanol is ...............
What type to compound is CH3COOH?
Give any two uses of ethanoic acid.
The substance which can produce brisk effervescence with baking soda solution is:
(a) ethanol
(b) vegetable oil
(c) vinegar
(d) soap solution(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
In a soap micelle, the soap molecules are arranged radially with the hydrocarbon ends, i.e. hydrophobic, directed towards the centre; and, ionic ends, i.e. hydrophilic, directed outwards.
A student adds 4 mL of acetic acid to a test tube containing 4 mL of distilled water. He then shakes the test tube and leaves it to settle. After about 10 minutes he observes:
(A) a layer of water over the layer of acetic acid
(B) a layer of acetic acid over the layer of water
(C) a precipitate settling at the bottom of the test tube
(D) a clear colourless solution
Acetic acid solution turns:
(1) blue litmus red
(2) red litmus blue
(3) blue litmus colourless
(4) red litmus colourless
Identify the term or substance based on the descriptions given below:
Hydrocarbon containing a triple bond used for welding purposes
Raina while doing certain reactions observed that heating of substance ‘X’ with a vinegar-like smell with a substance ‘Y’ (which is used as an industrial solvent.) in the presence of conc. Sulphuric acid in a water bath gives a sweet-smelling liquid ‘Z’ having molecular formula C4H8O2. When heated with caustic soda (NaOH), ‘Z’ gives back the sodium salt and the compound ‘Y’.
Identify ‘X’, ‘Y’, and ‘Z’. Illustrate the changes with the help of suitable chemical equations.
