$CATEGORY: Science - Khan Academy/4.Carbon and its Compounds/4.Carbon and its Compounds--Versatile Nature Of Carbon

//Multiple Choice

Which of the following is a characteristic of alkanes? {
    ~Contain at least one double bond
    =Contain only single bonds between carbon atoms
    ~Contain at least one triple bond
    ~Contain a hydroxyl group
}

What is the general molecular formula of alkenes? {
    ~CnH2n+2
    =CnH2n
    ~CnH2n-2
    ~CnH2n+1
}

Which of the following is an example of an alkyne? {
    ~Ethene (C2H4)
    ~Methane (CH4)
    ~Propene (C3H6)
    =Ethyne (C2H2)
}

Alkanes are also known as ______ hydrocarbons. {
    ~Unsaturated
    =Saturated
    ~Aromatic
    ~Cyclic
}

What is the molecular formula of an alkane with 6 carbon atoms? {
    ~C6H12
    =C6H14
    ~C6H10
    ~C6H6
}

Which type of bond is present in alkenes? {
    ~Single bonds
    =Double bonds
    ~Triple bonds
    ~Quadruple bonds
}

Which of the following is a characteristic of alkynes? {
    ~Contain only single bonds
    ~Contain only double bonds
    =Contain at least one triple bond
    ~Contain a hydroxyl group
}

The molecular formula of butene (an alkene) is ______. {
    =C4H8
    ~C4H10
    ~C4H6
    ~C4H12
}

Which of the following hydrocarbons is the most reactive? {
    ~Alkane
    ~Alkene
    =Alkyne
    ~All are equally reactive
}

What is the molecular formula of ethane (an alkane)? {
    ~C2H4
    =C2H6
    ~C2H2
    ~C2H8
}

//True or False

Alkanes are also known as saturated hydrocarbons. {T}

Alkenes contain only single bonds between carbon atoms. {F}

Alkynes are more reactive than alkanes because they contain a triple bond. {T}

The molecular formula of ethene (C2H4) is an example of an alkane. {F}

Alkanes have the general molecular formula CnH2n+2. {T}

Alkynes have the general formula CnH2n. {F}

Alkenes are characterized by the presence of at least one triple bond. {F}

Methane (CH4) is an example of an alkane. {T}

The molecular formula of ethyne (C2H2) is an example of an alkyne. {T}

Alkanes are the least reactive of the three types of hydrocarbons (alkanes, alkenes, and alkynes). {T}

//Fill in the blanks

Alkanes are also known as ______ hydrocarbons. {
    ~Unsaturated
    =Saturated
    ~Aromatic
    ~Cyclic
}

The general molecular formula for alkenes is ______. {
    ~CnH2n+2
    =CnH2n
    ~CnH2n-2
    ~CnH2n+1
}

The presence of a ______ bond makes alkynes different from alkenes and alkanes. {
    ~Single
    ~Double
    =Triple
    ~Quadruple
}

The molecular formula of methane, an alkane, is ______. {
    =CH4
    ~C2H6
    ~C3H8
    ~C4H10
}

The functional group in alkenes is the ______ bond between carbon atoms. {
    ~Single
    =Double
    ~Triple
    ~Quadruple
}

Alkanes contain only ______ bonds between carbon atoms. {
    =Single
    ~Double
    ~Triple
    ~Quadruple
}

The molecular formula of an alkene with 4 carbon atoms is ______. {
    =C4H8
    ~C4H10
    ~C4H6
    ~C4H12
}

Ethene (C2H4) is an example of an ______. {
    ~Alkane
    =Alkene
    ~Alkyne
    ~Aromatic compound
}

The molecular formula of ethyne (an alkyne) is ______. {
    ~C2H6
    ~C2H4
    =C2H2
    ~C2H8
}

Alkynes are more reactive than alkanes and alkenes because they contain a ______ bond. {
    ~Single
    ~Double
    =Triple
    ~Quadruple
}

//Numericals

What is the molecular formula of an alkane with 5 carbon atoms? {
    ~C5H10
    =C5H12
    ~C5H8
    ~C5H6
}

What is the molecular formula of an alkene with 3 carbon atoms? {
    =C3H6
    ~C3H8
    ~C3H4
    ~C3H10
}

What is the molecular formula of an alkyne with 4 carbon atoms? {
    ~C4H8
    ~C4H10
    =C4H6
    ~C4H12
}

What is the molecular formula of an alkane with 8 carbon atoms? {
    ~C8H16
    =C8H18
    ~C8H14
    ~C8H12
}

What is the molecular formula of an alkene with 6 carbon atoms? {
    ~C6H12
    =C6H10
    ~C6H14
    ~C6H16
}

What is the molecular formula of an alkyne with 2 carbon atoms? {
    ~C2H6
    =C2H2
    ~C2H4
    ~C2H8
}

What is the molecular formula of an alkane with 3 carbon atoms? {
    ~C3H6
    =C3H8
    ~C3H10
    ~C3H4
}

What is the molecular formula of an alkene with 4 carbon atoms? {
    =C4H8
    ~C4H6
    ~C4H10
    ~C4H12
}

What is the molecular formula of an alkyne with 5 carbon atoms? {
    =C5H8
    ~C5H10
    ~C5H6
    ~C5H12
}

What is the molecular formula of an alkane with 7 carbon atoms? {
    ~C7H14
    =C7H16
    ~C7H12
    ~C7H18
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Alkanes -> CnH2n+2 
=Alkenes -> CnH2n 
=Alkynes -> CnH2n-2 
=General formula of Alkanes -> CnH2n+2 
}


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