Download App

Chemistry [2 Mark Question Answer]

11.6 Carboxylic Acid · ICSE STD 10 (ICSE - English Medium). 14 questions.

Questions

[2 Mark Question Answer]

🎯

Test yourself on this topic

14 questions · timed · auto-graded

Question 12 Marks
Methane does not undergo addition reaction, but ethane does.
Answer
Alkanes are saturated, i.e. they do not have a carbon-to-carbon double bond, and so do not undergo an addition reaction. Alkenes are said to be unsaturated because of the carbon-to-carbon double bond in their structure, and the double bond in alkenes makes them more reactive than alkanes.
View full question & answer→
Question 22 Marks
Ethyl alcohol to Ethane.
Answer
When concentrated sulphuric acid is added to ethyl alcohol, it causes dehydration to give ethene. Ethene reacts with hydrozen in presence of $Ni$ to give ethane.
$
C _2 H _5 OH \xrightarrow[170^{-}]{\text {Conc } \cdot H _2 SO _4} CH _2= CH _2+ H _2 O
$
$
CH _2= CH _2+ H _2 \xrightarrow[300^{\circ} C ]{ Ni } CH _3- CH _3
$
View full question & answer→
Question 32 Marks
Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present is it.
Answer
Sructural formula of carbon tetrachloride:
$\begin{array}{cc}
\ce{Cl}\\
|\\
\ce{Cl-C-Cl}\\
|\\
\ce{Cl}
\end{array}$
The bond is Covalent Bond.
View full question & answer→
Question 42 Marks
Why is pure acetic acid also known as glacial acetic acid?
Answer
Acetic acid that contains a very low amount of water (less than 1%) is called anhydrous (water-free) acetic acid or glacial acetic acid. The reason its called glacial is because it solidifies into solid acetic acid crystals just cooler than room temperature at 16.7 °C, which ice. Removing the water from acetic acid lowers its melting point by 0.2 °C.
View full question & answer→
Question 52 Marks
Write the general formula for a saturated hydrocarbon and give one example of a saturated hydrocarbon with its structural formula.
Answer
General formula of saturated hydrocarbon: CnH2n+2. For example methane:
Structural formula of methane is
$\begin{array}{cc}
\ce{H}\\
|\\
\ce{H-C-H}\\
|\\
\ce{H}
\end{array}$
View full question & answer→
Question 62 Marks
Ethylene forms and addition product with chlorine. name this addition product and write its structural formula.
Answer
Ethylene reacts with chlorine to form a product called as 1,2-dichloroethane, This reaction is known as Halogenation
$
CH _2= CH _2+ CI _2 \longrightarrow CH _2 CI - CH _2 Ci
$
1,2-dichloroethane
View full question & answer→
Question 72 Marks
(a) Draw the structural formula of ethene.
(b) What is the feature of the ethene structure, which allows ethene to react with chlorine in the way it does?
Answer
(a) Structural formula of ethene:
$\begin{array}{cc}
\phantom{.......}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\phantom{...}\text{\\}\phantom{...} \phantom{.}\text{/}\phantom{....}\\
\ce{C = C}\\
\phantom{....}\text{/}\phantom{...}\phantom{.}\text{\\}\phantom{....}\\
\phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\end{array}$
(b) Ethene can react with chlorine because there is presence of double bond which can result in the addition reaction.
View full question & answer→
Question 82 Marks
State what do you observe ethene is bubbled through a solution of bromine in terachloromethane (carbon tetrachloride)
Answer
When ethene is bubbled through a solution of bromine in tetrachloromethane, the orange colour of bromine disappears due to the formation of colourless ethylene bromide.
$
CH _2= CH _2+ Br \longrightarrow CH _2 Br - Ch _2 Br
$
View full question & answer→
Question 92 Marks
What is the result of oxidation of ethyl alcohol?
Answer
Oxidation of ethyl alchohol gives acetic acid
$
C _2 H _5 OH +[ O ] \xrightarrow[ H _2 SO _4]{ K _2 Cr _2 O _7} CH _3 CHO + H _2 O
$
$
CH _3 CHO +[ O ] \xrightarrow[ H _2 SO _4]{ K _2 Cr _2 O _7} CH _3 COOH
$
View full question & answer→
Question 102 Marks
Write three physical properties of acetic acid.
Answer
Three physical properties of acetic acid:
  • State : Liquid
  • Odour : Pleasant smell-smell of vinegar
  • Taste : sour taste
View full question & answer→
Question 112 Marks
How Will You Carry Out the Following Conversions?
Ehane to acitic acid
Answer
Ehane to acitic acid
$C _2 H _6+ O _2 \xrightarrow[\text { Conc } \cdot H _2 SO _4]{ MoO } CH _3 CHO + H _2 O$
$CH _3 CHO +[ O ] \xrightarrow[\text { Conc } \cdot H _2 SO _4]{ K _2 Cr _2 O _7} CH _3 COOH$
View full question & answer→
Question 122 Marks
How will you carry out the following conversions?
Ethene to acetic acid
Answer
Ethene to acetic acid
$
C _2 H _4+ H _2 \xrightarrow{ Pt } C _2 H _6
$
$
C _2 h _6+ O _2 \xrightarrow[\text { Conc } \cdot H _2 SO _4]{ MoO } CH _3 CHO + H _2 O
$
$
CH _3 CHO +[ O ] \xrightarrow{ K _2 Cr _2 O _7\left[ Conc \cdot H _2 SO _4\right.} CH _3 COOH
$
View full question & answer→
Question 132 Marks
Name the first four members of alphatic carboxylic acid.
Answer
The first four members of alphatic carboxylic acid are:
  • Methanoic acid
  • Ethanoic acid
  • Propanoic acid
  • Butanoic acid
View full question & answer→
Question 142 Marks
Addition of ethyl alcohol to acetic acid in presence of conc. $H_2SO_4$​​​​​​​
Answer
On addition of ethyl alcohol to acetic acid in the presence of conc. $H _2 SO _4$ at high temperature, sweet smelling ethyl acetate ester is produced, and the process is known as esterification.
$C _2 H _5 OH + CH _3 COOH \xrightarrow{ ConcH _2 SO _4} CH _3 COOC _3 H _5+ H _2 O$
View full question & answer→
Generate Paper FreeAll 11.6 Carboxylic Acid topics
[2 Mark Question Answer] - Chemistry STD 10 Questions - Vidyadip