Carbon and its Compounds

In the dot structure of $Cl_2$, how many dots are placed around each chlorine atom (including shared ones)?

How many valence electrons does Nitrogen have?

The melting point of Methane is very low because:

Which of the following describes the nature of the bond in $CH_4$?

In a molecule of hydrogen sulfide ($H_2S$), the sulfur atom (atomic number 16) forms two single covalent bonds by sharing electrons with two hydrogen atoms. How many electrons remain in the valence shell of the sulfur atom that are NOT shared in these bonds?

Methanol ($CH_3OH$) is a simple organic molecule containing carbon, hydrogen, and oxygen. Based on the standard valencies of these elements, what is the total number of single covalent bonds formed in a single molecule of methanol?

Cyclohexane ($C_6H_{12}$) is a cyclic hydrocarbon where carbon atoms form a closed ring. Based on the property that each carbon atom must form four covalent bonds to be stable, how many carbon-carbon ($C-C$) and carbon-hydrogen ($C-H$) single covalent bonds are present in one molecule of cyclohexane?

In a triple bond between two carbon atoms, what is the total number of electrons involved?

Which of the following is NOT a property of most carbon compounds?

How many double bonds are present in a molecule of Benzene?

Which of the following is the reason for the existence of such a large number of carbon compounds?

The valency of carbon is satisfied by forming:

Carbon can form rings with how many carbon atoms?

What is the general name for compounds with the same molecular formula but different structural formulas?

Unsaturated hydrocarbons are generally more reactive than saturated hydrocarbons because of the presence of:

In the context of carbon's versatile nature, 'Tetravalency' refers to carbon's ability to:

Identify the element that does NOT belong to the same group as Carbon but can form covalent bonds.

In which of the following allotropes of carbon does a carbon atom bond to only three other carbon atoms?

Which of the following represents the correct order of bond strength?

Isomers have:

Which member of the alkane series is a liquid at room temperature?

All members of a homologous series can be prepared by:

What is the molecular formula for propyne?

Successive members of a homologous series show a regular gradation in:

The flowchart shows the first three members of the alkyne homologous series. Based on the structural properties of these compounds, calculate the total number of covalent bonds present in one molecule of 'Member 2' (Propyne).

In the provided diagram, members of the alcohol homologous series are transformed into their corresponding carboxylic acids. Following the observed pattern of carbon atoms, what is the chemical formula of 'Compound X'?

Which series of compounds is correctly arranged in increasing order of boiling points?

The second member of the alkyne series is:

Which of the following members of the alcohol homologous series is most likely to be a solid at room temperature?

A compound 'X' has the formula $C_4H_6$. The next member 'Y' of the same series is reacted with $H_2$ in the presence of Nickel. What is the final product formed?

What is the word root for 8 carbon atoms?

What is the IUPAC name for a three-carbon chain with a triple bond?

Which of these is the IUPAC name for $CH_{3}CH_{2}CH_{2}Cl$?

What is the IUPAC name for $C_{2}H_{5}COOH$?

Identify the suffix for a triple bond in IUPAC nomenclature.

How many carbon atoms are in a molecule of Heptane?

What is the IUPAC name of the simplest carboxylic acid?

What is the correct IUPAC name for the compound whose skeletal arrangement is shown in the diagram, assuming that the bond between the first two carbon atoms (labeled $CH_{2}$ and $C$) is a double bond?

What is the IUPAC name of the compound with formula $CH_{3}-C\equiv C-CH_{3}$?

The name 2,3-dimethylbutane refers to a molecule with how many total carbon atoms?

Which type of fat is considered unhealthy for consumption?

Which of the following is a byproduct of the combustion of methane?

Alkaline $KMnO_4$ is also known as:

Bromine water test is used to distinguish between:

The diagram below shows two different chemical pathways, Path 1 and Path 2, for the reaction of propane ($C_3H_8$). Based on the products formed, identify the types of chemical reactions occurring in each path.

Pure ethanol is often called:

Which of the following is an example of an oxidation reaction in carbon compounds?

A hydrocarbon 'X' has a carbon-to-hydrogen mass ratio of $6:1$. It is subjected to the chemical reactions shown in the flowchart below. Based on the given information, which of the following statements is INCORRECT?

A substitution reaction is characterized by:

Which of the following reagents is best suited to convert ethanol directly to ethanoic acid in a school laboratory?

Which of the following compounds is generally neutral towards litmus?

The compound $CH_3COOCH_2CH_3$ is formed by the reaction of:

What happens when ethanoic acid is treated with Universal Indicator?

The chemical reaction: $CH_3COOH + NaOH \rightarrow CH_3COONa + H_2O$ is an example of:

Why does ethanoic acid have a higher melting point than ethanol?

What is the byproduct formed in the esterification reaction between ethanoic acid and ethanol?

When an ester is treated with sodium hydroxide, it is converted back to alcohol and the sodium salt of carboxylic acid. This reaction is used to make:

A sweet-smelling organic compound 'E' is hydrolyzed by $NaOH$ to give an alcohol 'A' and a salt 'S'. 'A' on oxidation gives the acid 'Ac' from which 'E' was originally formed. If 'A' is ethanol, what is 'E'?

Identify the functional group present in the product formed by the reaction of ethanol with acidified potassium dichromate.

What happens when a small amount of concentrated $H_2SO_4$ is added to a mixture of ethanoic acid and ethanol?

Which of the following is NOT a property of soaps?

In the manufacture of soap, common salt ($NaCl$) is added to:

Which of the following describes the nature of the hydrocarbon tail?

A micelle stays in solution as a colloid because of:

A student dissolves a sample of soap in two different test tubes: Test Tube A contains water ($H_2O$), and Test Tube B contains ethanol ($C_2H_5OH$). Observations show that micelles form only in Test Tube A. What is the most likely reason for the absence of micelles in Test Tube B?

In a school laboratory, a student reacts a fatty acid with two different bases: Sodium Hydroxide ($NaOH$) and Potassium Hydroxide ($KOH$). The products obtained are labeled as Soap 1 and Soap 2 respectively. Based on the flowchart and your knowledge of saponification, which statement correctly distinguishes between them?

The formation of scum during washing with soap is a problem because:

A soap molecule has a 'tadpole' like structure. What is the chemical nature of the 'head' and 'tail' respectively?

In the manufacture of soap, why is glycerol removed?

Which gas is NOT evolved or involved in the standard saponification process?

The bonds formed by sharing three pairs of electrons between two atoms are called:

Which element forms the most stable and strong bonds with carbon due to the high compatibility of atomic sizes?

In the Lewis dot structure of methane, how many dots are placed around the central Carbon atom to represent its own valence electrons?

Which of the following can form a stable ring of 6 carbon atoms?

Carbon atoms can link together to form various structures, including rings. The diagram below shows a skeleton of five carbon atoms connected in a closed ring by single bonds. Which property of carbon is primarily responsible for this self-linking, and how many hydrogen atoms are required to satisfy the tetravalency of all carbon atoms in this saturated molecule?

Why does carbon show catenation to a greater extent than any other element in its group?

In the context of carbon's tetravalency, it can form bonds with chlorine atoms. In the molecule $CCl_4$, how many electrons are shared between the carbon atom and the four chlorine atoms in total?

When carbon atoms form a branched chain instead of a straight chain, which of the following remains constant?

In the context of catenation, why do elements like Lead ($Pb$) not show this property?

A molecule has the formula $C_{2}H_{4}O_{2}$. This could be Ethanoic acid or Methyl formate. Which phenomenon of carbon's versatility does this represent?

What is the IUPAC name of $CH_{3}Br$?

What is the name of the functional group $-CHO$?

What is the IUPAC name of an alkene with four carbon atoms where the double bond is between the second and third carbon?

The group $-COOH$ represents which functional group?

In organic chemistry nomenclature, what suffix is used to denote the presence of an alcohol group?

What is the IUPAC name for the compound $CH_{3}CH_{2}CH_{2}CH_{2}CH_{2}CH_{2}OH$?

Identify the IUPAC name for the alcohol with formula $CH_{3}OH$.

Which is the correct IUPAC name for $CH_3-C(CH_3)_2-CH_2-OH$?

Identify the name for a propane chain with a hydroxyl group on the first carbon and a methyl group on the second carbon.

What is the IUPAC name for $CH_3-CH_2-O-CH_2-CH_3$ (though ethers are usually higher level, naming as alkoxyalkane)?

Which of the following substances will produce a sooty flame upon burning in air?

Carbon and its compounds are used as fuels because they release:

Which of the following is an example of a substitution reaction?

Bromine water test is used to distinguish between:

Which of the following organic compounds will give a soot-free flame upon combustion in sufficient air?

In the substitution reaction of methane, the process stops if:

What is the primary product of the complete combustion of the simplest hydrocarbon, methane?

Which of the following reactions is used to distinguish between ethane and ethene using an oxidizing agent that changes from purple to colorless (or forms a brown precipitate)?

What happens to the oxidation state of the carbon atom in methane when it is converted to carbon dioxide during combustion?

In the process of making 'Vanaspati Ghee', which gas is bubbled through the vegetable oil and what is the catalyst used?

What part of the soap molecule is represented by a long zigzag line in chemical diagrams?

Which of the following will form lather most easily with soap?

Detergents are often called 'soapless soaps' because:

Which of the following is a physical state of soap at room temperature?

When oily dirt is trapped inside a micelle, how is it removed from the cloth surface into the water?

A student was asked to identify a sample. The sample was found to be the sodium salt of a long chain fatty acid. What is the sample?

Soap is not recommended for washing delicate woollen garments because:

A student reacts 1 mole of ethanol ($C_2H_5OH$) with 1 mole of ethanoic acid ($CH_3COOH$) in the presence of a trace amount of concentrated sulphuric acid. Once the esterification reaction is complete, 1 mole of sodium hydroxide ($NaOH$) is added to the reaction vessel and the mixture is heated. Which of the following correctly identifies the organic compounds and their molar amounts present in the vessel at the end of this process?

Why does soap fail to clean properly when the water is 'hard'?

Consider the following chemicals: 1. Vegetable Oil, 2. $NaOH$, 3. $NaCl$, 4. Water. Which combination and condition are required for the laboratory preparation of soap?

Pure ethanoic acid is often called 'glacial acetic acid' because:

What is formed when ethanol is heated with excess concentrated sulphuric acid at 443 K?

Detergents are generally ammonium or sulphonate salts of long chain ______ acids.

Which of the following is the main reason why carbon forms a large number of compounds?

The boiling points of the first four members of the alkane homologous series are shown in the diagram. What is the primary reason for the observed trend in boiling points as the molecular size increases from methane to butane?

The bond formed between two atoms by sharing of a pair of electrons is called a:

The second member of the alkene series is:

An organic compound 'P' has the molecular formula $C_3H_6O$. Based on the reaction pathway and properties shown in the diagram, and knowing that 'P' is a symmetrical molecule, identify the functional group of 'P' and the IUPAC name of its reduction product 'Q'.

Which gas is released when ethanoic acid reacts with sodium carbonate?

Identify the compound which is not a part of the same homologous series as others.

A covalent bond is represented by a ______ between two atoms.

Carbon forms strong bonds with most other elements due to its:

The number of electrons shared in a triple bond is:

Which of the following molecules has only single covalent bonds?

The property of catenation is most prominent in:

Which of the following is the correct representation of a nitrogen molecule?

The octet of a carbon atom is completed by:

In a carbon compound called carbon suboxide ($C_3O_2$), the atoms are arranged in a linear sequence as shown in the diagram. Given that every carbon atom must satisfy its tetravalency and every oxygen atom must satisfy its divalency through covalent bonding, determine the total number of double covalent bonds present in the molecule and the total number of valence electrons involved in the shared pairs.

Carbon forms compounds mainly by covalent bonding because:

Which of the following has the highest boiling point?

When ethanol is heated with alkaline potassium permanganate, the purple color disappears because:

Which of the following compounds will not undergo an addition reaction?

Which of these is the correct balanced equation for the complete combustion of methane?

In the reaction $CH_2=CH_2 + H_2 \xrightarrow{Ni} CH_3-CH_3$, what is the role of Nickel?

When burning wood, we often see a flame. However, charcoal sometimes just glows red without a flame. Why?

Substitution reactions are characteristic of which group of hydrocarbons?

What is the function of concentrated $H_2SO_4$ in the esterification reaction?

A substance 'A' is used to identify the presence of unsaturation in organic compounds. When 'A' is added to compound 'B', the reddish-brown color of 'A' disappears. 'A' and 'B' are likely to be:

If a hydrocarbon has the general formula $C_{n}H_{2n-2}$, which type of chemical reaction is it most likely to undergo easily?

Which of the following organic compounds will produce the maximum amount of carbon dioxide per mole upon complete combustion?

Which type of chemical bond is primarily found in ethanol?

Which compound is the immediate homologue of ethanol with fewer carbon atoms?

What is the percentage of ethanol in 'rectified spirit' approximately?

When sodium reacts with ethanol, which observation is correct?

A student carries out two different chemical treatments on ethanol as illustrated in the flowchart. Based on the reaction pathways, which option correctly describes the chemical nature of Product 1 and Product 2?

In the chemical reaction of ethanol with sodium metal, a salt and a gas are produced as shown in the flowchart. What is the sum of the total number of carbon atoms present in one formula unit of the 'Organic Salt' and the number of hydrogen atoms present in one molecule of the 'Gas Molecule'?

Gasohol is a mixture of:

What is 'Power Alcohol'?

Which of the following is the correct molecular formula for the sodium salt produced when ethanol reacts with sodium?

A student adds a drop of ethanol to a crystal of potassium permanganate in a test tube. No change is seen. Upon heating the test tube, the purple color disappears. This indicates: