Covalent Bonding in Carbon Compounds

Q.

Differentiate between alkane, alkene, alkyl, and alkyne?

Q.

Ethane, with the molecular formula ${\text{C}}_2{\text{H}}_6$, has ____ covalent bonds.

1. six
2. seven
3. eight
4. nine

Q.

Why does carbon form compounds by covalent bonding ?

Q. The maximum number of covalent bonds that can be formed between two carbon atoms is ________.

1. 2
2. 5
3. 3
4. 4

Q. The total number of covalent bonds in one molecule of butane are ________.

1. ten
2. eleven
3. thirteen
4. six

Q.

The maximum covalency of Sulphur is ___

Q.

The diagram shows an apparatus used to compare rates of diffusion. At which labelled position did a white deposit of Ammonium Chloride form?

1. B

2. A

3. C

4. D

Q. The maximum number of structural isomers possible for n-pentane is ______.

1. two
2. three
3. four
4. five

Q.

$Cl$ valency is 1 then why it is sometimes written in as $C{l}_2$ and many others like $H$ is sometimes written $H_3$ after a reaction.

Is there any formula or something through which I can understand?

Plz evaluate this concept very clearly

Q.

What do you understand by lone pair and shared pair?

Q. C4+ and C4- are highly unstable carbon states. It happens when carbon is either positively or negatively charged. But the number of valence electrons in the outer most shell is 8 and carbon has only 4. So why can’t carbon complete its valence electrons??

Q. The maximum number of covalent bonds that can be formed between two carbon atoms is ________.

1. five
2. four
3. three
4. two

Q.

Write the reasons for ${\mathrm{CO}}_2$ can be easily liquified and even solidified.

Q. What is van den Waals forces of attraction?

Q.

What are hydrocarbons? How are these classified?

Q.

In a double bond connecting two atoms, there is a sharing of

1. 2 electrons

2. 1 electron

3. 4 electrons

4. 6 electrons

Q.

What happens when ethene burns in the air if the supply of air is in excess?

1. Carbon monoxide is produced

2. Carbon dioxide is produced

3. Hydrogen gas is produced

4. Oxygen gas is produced

Q. Covalent compounds have melting point as they have intermolecular forces between them.

1. high
2. low
3. strong
4. weak

Q. A bond is formed between two carbon atoms when four electrons are shared between them.

1. double bond
2. triple bond
3. single bond

Q.

Which of the following solids is not an electrical conductor?

1. ${\mathrm{I}}_2$

2. $\mathrm{Mg}$

3. ${\mathrm{H}}_2$

4. Both A and C

Q.

What is meant by saturated and unsaturated Carbon compounds? Give one example of each type.

Q.

How many electrons does a carbon atom share with other carbon atom(s) in the formation of acetylene molecule?

1. Three

2. Two

3. One

4. Four

Q.

The ---------- of free electrons in covalent compounds make them ----------- conductors of electricity.

1. presence
2. absence
3. good
4. poor

Q. , the self linking property along with , helps carbon atoms to make large number of chains and rings.

1. Catenation
2. tetravalency
3. Allotropy
4. nuclear charge

Q.

How many electrons are shared in a double bond?

1. 6

2. 2

3. 4

4. Bond is formed by sharing of protons not electron.

Q. The maximum number of covalent bonds that can be formed between two carbon atoms is ________.

1. two
2. five
3. three
4. four

Q. If an atom is sharing its 8 valence electrons with another atom, then:

1. A quadruple bond is formed between two atoms
2. A double bond is formed between two atoms
3. A triple bond is formed between two atoms
4. Question is wrong; an atom cannot share 8 valence electrons with another atom.

Q. Choose the correct options regarding the type of covalent bond formed in the given elements and compounds.

1. Nitrogen - Triple bond
2. Oxygen - Double bond
3. Hydrogen chloride - Single bond
4. Lithium chloride - Single bond

Q.

Consider the section of the Periodic Table given below:

Note: In this table:

B does not represent boron. C does not represent carbon. F does not represent fluorine. H does not represent hydrogen. K does not represent potassium.

You must see the position of the element in the Periodic Table.

Some elements are given in their own symbol and position in the Periodic Table while others are shown with a letter. With reference to the table:

In the compound between F and J, what type of bond will be formed?

1. Ionic

2. Covalent

3. Co-ordinate

4. None of them

Q.

Two elements that are liquid at room temperature?