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

//Multiple Choice

What is the general formula for alkanes? {
    ~CnH2n
    =CnH2n+2
    ~CnH2n-2
    ~CnH2n+1
}

Which of the following is the molecular formula of ethene? {
    =C2H4
    ~C2H6
    ~C3H6
    ~C3H8
}

What is the functional group in alkenes? {
    ~COOH
    ~OH
    =-C\=C-
    ~-CO
}

Which of the following is the molecular formula of ethyne (acetylene)? {
    ~C2H4
    ~C2H6
    =C2H2
    ~C3H6
}

Which of the following is an example of an alkane? {
    ~C2H4
    =C2H6
    ~C3H6
    ~C4H8
}

What is the suffix used for naming alkenes? {
    ~-ane
    =-ene
    ~-yne
    ~-ol
}

What is the general formula for alkynes? {
    ~CnH2n+2
    ~CnH2n
    =CnH2n-2
    ~CnH2n+1
}

Which of the following is the molecular formula of butyne? {
    =C4H6
    ~C4H8
    ~C4H10
    ~C4H12
}

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

Which of the following hydrocarbons is a member of the alkene family? {
    ~Methane
    ~Propane
    =Ethene
    ~Butane
}

//True or False

Alkanes are also known as saturated hydrocarbons. {T}

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

The general formula for alkynes is CnH2n+2. {F}

Methane is an example of an alkene. {F}

Alkynes contain triple bonds between carbon atoms. {T}

The suffix used for naming alkenes is -ene. {T}

The molecular formula of butane is C4H10. {T}

Alkenes are unsaturated hydrocarbons because they contain double bonds. {T}

The molecular formula of ethane is C2H4. {F}

Propene is an example of an alkene. {T}

//Fill in the blanks

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

The functional group present in alkenes is ______. {
    ~COOH
    ~OH
    =-C\=C-
    ~-CO
}

The molecular formula of ethene is ______. {
    =C2H4
    ~C2H6
    ~C3H6
    ~C3H8
}

The suffix used for naming alkynes is ______. {
    ~-ane
    ~-ene
    =-yne
    ~-ol
}

The molecular formula of ethyne (acetylene) is ______. {
    =C2H2
    ~C2H4
    ~C2H6
    ~C3H6
}

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

The molecular formula of butane is ______. {
    ~C4H6
    ~C4H8
    =C4H10
    ~C4H12
}

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

The functional group in alkynes is ______. {
    ~OH
    ~COOH
    =-C≡C-
    ~-C\=C-
}

The molecular formula of propene is ______. {
    =C3H6
    ~C3H8
    ~C2H4
    ~C2H6
}

//Numericals

What is the molecular weight of methane (CH4)? (C \= 12, H \= 1) {
    =16 g/mol
    ~18 g/mol
    ~20 g/mol
    ~22 g/mol
}

What is the molecular weight of ethene (C2H4)? (C \= 12, H \= 1) {
    ~24 g/mol
    ~26 g/mol
    =28 g/mol
    ~30 g/mol
}

What is the molecular formula of butane? {
    ~C4H8
    =C4H10
    ~C4H12
    ~C4H6
}

How many hydrogen atoms are present in propene (C3H6)? {
    ~4
    =6
    ~8
    ~10
}

What is the molecular weight of ethyne (C2H2)? (C \= 12, H \= 1) {
    ~24 g/mol
    =26 g/mol
    ~28 g/mol
    ~30 g/mol
}

What is the molecular formula of pentane? {
    ~C5H8
    ~C5H10
    =C5H12
    ~C5H14
}

What is the molecular weight of propane (C3H8)? (C \= 12, H \= 1) {
    ~40 g/mol
    ~42 g/mol
    =44 g/mol
    ~46 g/mol
}

What is the molecular formula of butyne? {
    ~C4H8
    ~C4H10
    =C4H6
    ~C4H12
}

What is the molecular weight of butene (C4H8)? (C \= 12, H \= 1) {
    ~50 g/mol
    =52 g/mol
    ~54 g/mol
    ~56 g/mol
}

How many carbon atoms are present in the alkane with the molecular formula C6H14? {
    ~4
    ~5
    =6
    ~7
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=Alkane -> - C-H 
=Alkene -> -C\=C- 
=Alkyne -> - C≡C- 
=General formula for Alkanes -> CnH2n+2 
}


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