Vinegar is a solution of about:
- A5 to 8 per cent ethanoic acid in alcohol.
- ✓5 to 8 per cent ethanoic acid in water.
- C50 to 80 per cent ethanoic acid in water.
- D50 to 80 per cent ethanoic acid in alcohol.
Answer: B.
View full solution →Question types
Carbon and its Compounds question types
941 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
941
Questions
12
Question groups
5
Question types
01
M.C.Q
52 Q→02M.C.Q-[Che-1M]
51 Q→03Fill in the blank
21 Q→04Fill in the blank [Che-1M]
21 Q→05[1 Mark Questions]
276 Q→06Answer the questions.[Che-1M]
276 Q→07[2 Mark Questions]
85 Q→08Answer the questions.[Che-2M]
85 Q→09[3 Mark Questions]
22 Q→10Answer the questions.[Che-3M]
22 Q→11[5 marks Questions]
15 Q→12Answer the questions.[Che-5M]
15 Q→Sample Questions
Carbon and its Compounds questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
When ethanol reacts with sodium metal, it forms two products. These products are:
- ASodium ethanaoate and oxygen.
- BSodium ethanaoate and hydrogen.
- CSodium ethoxide and oxygen.
- ✓Sodium ethoxide and hydrogen.
Answer: D.
View full solution →In a soap micelle, the soap molecules are arranged radially with:
- AIonic ends directed towards the centre and hydrocarbon ends directed outwards.
- ✓Hydrocarbon ends directed towards the centre and ionic ends directed outwards.
- CBoth ionic ends and hydrocarbon ends directed toward the centre.
- DBoth hydrocarbon ends and ionic ends directed outwards
Answer: B.
View full solution →The hydrocarbon which has alternate single and double bonds arranged in the form of a ring is:
- ACyclobutane.
- ✓Benzene.
- CButene.
- DHexene.
Answer: B.
View full solution →The molecular formula of an organic compound is $\ce{C_{48}H_{94}}$ This compound belongs to the homologous series of:
- ✓Alkenes.
- BAldehydes.
- CAlkynes.
- DAlkanes.
Answer: A.
View full solution →While cooking, if the bottom of the utensil is getting blackened on the outside, it means that:
- The food is not cooked completely.
- The fuel is not burning completely.
- The fuel is wet.
- The fuel is burning completely.
Which one of the following is not a fossil fuel?
- Petrol.
- Cock.
- Charcoal.
- Coal.
Which of the following molecular formula corresponds to ethylbutanoate ester?
- C5H10O2
- C6H12O2
- C7H14O2
- C8H16O2
Which of the following cannot exhibit isomerism?
- C4H10
- C5H12
- C3H8
- C6H14
Which of the following can damage optic nerve leading to blindness, if taken internally?
- CH3COOH
- C2H5OH
- NaHCO3
- CH3OH
Fill in the following blanks with suitable words:
The sodium salt of a long chain fatty acid is called ___________.
The sodium salt of a long chain fatty acid is called ___________.
Fill in the following blanks with suitable words:
The IUPAC name of ethylene is _______.
The IUPAC name of ethylene is _______.
Fill in the following blanks with suitable words:
The property of carbon atoms to form long chains in compounds is called _______.
The property of carbon atoms to form long chains in compounds is called _______.
Fill in the following blanks with suitable words:
___________ is better than soap for washing clothes when the water is hard.
___________ is better than soap for washing clothes when the water is hard.
Fill in the following blanks with suitable words:
The next higher homologue of ethanol is _________.
The next higher homologue of ethanol is _________.
Fill in the following blanks with suitable words:
The sodium salt of a long chain fatty acid is called ___________.
The sodium salt of a long chain fatty acid is called ___________.
Fill in the following blanks with suitable words:
The property of carbon atoms to form long chains in compounds is called _______.
The property of carbon atoms to form long chains in compounds is called _______.
Fill in the following blanks with suitable words:
The process of burning of a hydrocarbon in the presence of air to give CO2, H2O, heat and light is known as ___________.
The process of burning of a hydrocarbon in the presence of air to give CO2, H2O, heat and light is known as ___________.
Fill in the following blanks with suitable words:
The organic acid present in vinegar is ___________.
The organic acid present in vinegar is ___________.
Fill in the following blanks with suitable words:
The next homologue of C2H5OH is _________.
The next homologue of C2H5OH is _________.
What happens when (give chemical equation):
Sodium reacts with ethanol (ethyl alcohol).
Sodium reacts with ethanol (ethyl alcohol).
Which of the following molecule is called buckminsterfullerene?$\text{C}_{90}\text{C}_{60}\text{C}_{70}\text{C}_{20}$
View full solution →Write the chemical equation of the reaction which takes place during the burning of ethanol in air.
What happens when carbon burns in air? Write the chemical equation of the reaction which takes place.
What is the difference in the molecular mass of any two adjacent homologues?
Write the structural formula of propyne.
Write the structural formula of propyne.
Write the structural formula of propene.
Write the structural formula of propene.
Write the structural formula of butane.
How would you test for an alcohol?
Describe, giving equation, a chemical reaction which is characteristic of saturated hydrocarbons (or alkanes).
State two characteristics of a homologous series.
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
Explain the meaning of saturated and unsaturated hydrocarbons with two examples each.
Write two points of difference in the structures of diamond and graphite.
Write three common functional groups present in organic compounds. Give their symbols /formulae.
Write the names and structural formulae of all the possible isomers of hexane.
Write the names and formulae for the first three members of the homologous series of chloroalkanes.
Write the molecular formula of:
- An alkane.
- An alkene.
- An alkyne, each having 20 carbon atoms?
Describe how petroleum was formed in the earth.
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents like ethanol also?
Name the functional group of organic compounds that can be hydrogenated. With the help of a suitable example, explain the process of hydrogenation, mentioning the conditions of the reaction and any one change in physical property with the formation of the product. Name any one natural source of organic compounds that are hydrogenated.
A hard material X which is mined from the earth is used as a house hold fuel and also for the generation of electricity at Thermal Power Stations. A soft material Y is also used us a fuel in the form of candles. A gaseous material Z which occurs along with petroleum is increasingly being used as a fuel in running vehicles in its compressed form.
- What are materials, X, Y and Z?
- When materials X, Y and Z are burned separately:
- When material burns by producing a yellow, luminous flame?
- Which material ultimately burns without producing a flame?
- Which material can burn in a gas stove by producing a blue flame?
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
- What is element X?
- Name the allotrope Y.
- State whether allotrope Y is a good conductor or non-conductor of electricity.
- Name one use of allotrope Y (other than lubrication and pencil leads)
- Name two other allotropes of element X.
Write the names of the following functional groups:
View full solution →- $-\text{CHO}$
- $-\text{OH}$
- $-\text{COOH}$
- $-\text{X}$
Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents like ethanol also?
What would be observed on adding a 5% alkaline potassium permanganate solution drop by drop to some warm ethanol in a test-tube? Write the name of the compound formed during the chemical reaction. Also write chemical equation of the reaction which takes place.
What makes the candle flame yellow and luminous?
What is meant by denatured alcohol? What is the need to denature alcohol?
An organic compound $A$ having the molecular formula $C _3 H _8 O$ is a liquid at room temperature. The organic liquid $A$ reacts with sodium metal to evolve a gas which burns causing a little explosion. When the organic liquid A heated with concentrated sulphuric acid at $170^{\circ} C$, it forms a compound B which decolourizes bromine water. The compound B adds on one molecule of hydrogen in the presence of Ni as catalyst to forms compound C which gives substitution reactions with chlorine.
a. What is compound A ?
b. What is compound B ?
c. What type of reaction occurs when A is converted into B ?
d. What is compound C?
e. What type of reaction takes place when $B$ is converted into $C$ ?
View full solution →a. What is compound A ?
b. What is compound B ?
c. What type of reaction occurs when A is converted into B ?
d. What is compound C?
e. What type of reaction takes place when $B$ is converted into $C$ ?
Describe the structure of graphite with the help of a labelled diagram.
You are given the following molecular formulae of some hydrocarbons:
$C _5 H _8 ; C _7 H _{14} ; C _6 H _6 ; C _5 H _{10} ; C _7 H _{12} ; C _6 H _{12}$
a. Which formula represent cyclohexane as well as hexene?
b. Which formula represents benzene?
c. Which three formulae represent open chain unsaturated hydrocarbons having double bonds?
d. Which two formulae represent unsaturated hydrocarbons having triple bonds?
e. Which three formulae can represent cyclic hydrocarbons?
View full solution →$C _5 H _8 ; C _7 H _{14} ; C _6 H _6 ; C _5 H _{10} ; C _7 H _{12} ; C _6 H _{12}$
a. Which formula represent cyclohexane as well as hexene?
b. Which formula represents benzene?
c. Which three formulae represent open chain unsaturated hydrocarbons having double bonds?
d. Which two formulae represent unsaturated hydrocarbons having triple bonds?
e. Which three formulae can represent cyclic hydrocarbons?
Two organic compounds A and B have the same molecular formula $C_6H_{12}$. Write the names and structural formulae:
View full solution →- If A is a cyclic compound.
- If B is an open chain compound.
- Which compound contains single bonds as well as a double bond?
- Which compound contains only single bonds?
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12
- Which formula represent cyclohexane as well as hexene?
- Which formula represents benzene?
- Which three formulae represent open chain unsaturated hydrocarbons having double bonds?
- Which two formulae represent unsaturated hydrocarbons having triple bonds?
- Which three formulae can represent cyclic hydrocarbons?
You are given an organic compound having the molecular formula C3H8. Give the name and formula of the compound formed:
- When one H atom of C3H8 is replaced by a Cl atom.
- When one H atom of C3H8 is replaced by a OH group.
- When one H atom of C3H8 is replaced by a CHO group.
- When one H atom of C3H8 is replaced by a COOH group.
- When two H atoms joined to the middle carbon atom of C3H8 are replaced by one O atom.
When ethanoic acid reacts with sodium hydrogencarbonate, then a salt X is formed and a gas Y is evolved.
Name the salt X and gas Y. Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also write the chemical equation of the reaction involved.
Name the salt X and gas Y. Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also write the chemical equation of the reaction involved.
Two organic compounds A and B have the same molecular formula C6H12. Write the names and structural formulae:
- If A is a cyclic compound.
- If B is an open chain compound.
- Which compound contains single bonds as well as a double bond?
- Which compound contains only single bonds?
The solid element A exhibits the property of catenation. It is also present in the form of a gas B in the air which is utilised by plants in photosynthesis. An allotrope C of this element is used in glass cutters.
- What is element A?
- What is the gas B?
- Name the allotrope C.
- State another use of allotrope C (other than in glass cutters).
- Name another allotrope of element A which exists as spherical molecules.
- Name a yet another allotrope of element A which conduct electricity.
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