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question_answer1)
Two adjacent members of a homologous series have:
A)
a difference of \[-C{{H}_{2}}\] in their structure done
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B)
a difference of 14 a.m.u. in molecular mass done
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C)
same general methods of preparation done
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D)
all of the above done
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question_answer2)
Alkenes are characterized by
A)
C - C bonds done
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B)
\[C=C\] bonds done
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C)
\[C\equiv C\] bonds done
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D)
cyclic structure done
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question_answer3)
Which of the following contains carbonyl group?
A)
Ketones done
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B)
Aldehydes done
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C)
Esters done
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D)
All of these done
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question_answer4)
The functional group present in \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] is
A)
ketonic done
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B)
aldehydic done
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C)
ester done
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D)
carboxylic done
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question_answer5)
Butanone is a four-carbon compound with the functional group
A)
carboxylic acid done
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B)
aldehyde done
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C)
ketone done
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D)
alcohol done
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question_answer6)
Which of the following is incorrectly matched?
A)
Vinegar \[Vinegar\to Carboxylicacid\] done
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B)
\[{{C}_{2}}{{H}_{6}}\to alkane\] done
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C)
\[Ethanol\to alcohol\] done
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D)
\[Methanol\to Ketone\] done
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question_answer7)
If a hydrocarbon has any double bond, it is
A)
alkyne done
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B)
alkane done
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C)
alkene done
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D)
All the above done
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question_answer8)
Alkynes are characterized by -
A)
C - C bonds done
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B)
C = C bonds done
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C)
\[C\equiv C\] bonds done
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D)
cyclic structure done
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question_answer9)
How many different isomers are possible for a hydrocarbon with the molecular formula \[{{C}_{4}}{{H}_{10}}\]
A)
1 done
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B)
2 done
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C)
3 done
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D)
5 done
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question_answer10)
The general formula \[{{C}_{n}}{{H}_{2n}}{{O}_{2}}\] could be for open chain
A)
diketones done
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B)
carboxylic acids done
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C)
diols done
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D)
dialdehydes done
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question_answer11)
The IUPAC name of \[C{{H}_{3}}C{{H}_{2}}COCI\] is
A)
propanoyl chloride done
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B)
ethanoyl chloride done
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C)
acetyl chloride done
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D)
chloroethane done
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question_answer12)
General formula of alkenes and alkyl radicals are respectively:
A)
\[{{C}_{n}}{{H}_{2n}}\]and \[Cn{{H}_{2n+1}}\] done
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B)
\[Cn{{H}_{2n}}\]and \[Cn{{H}_{2n+2}}\] done
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C)
\[Cn{{H}_{2n-1}}\] and \[Cn{{H}_{2n}}\] done
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D)
\[Cn{{H}_{2n+1}}\]and \[Cn{{H}_{2n+2}}\] done
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question_answer13)
The IUPAC name of \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] CH3COOC2H5 will be -
A)
ethyl acetate done
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B)
ethyl ethanoate done
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C)
methyl propanoate done
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D)
none of these done
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question_answer14)
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
A)
the food is not cooked completely. done
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B)
the fuel is not burning completely. done
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C)
the fuel is wet. done
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D)
the fuel is burning completely. done
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question_answer15)
Which is a general formula of alkenes?
A)
\[{{C}_{n}}{{H}_{2n+2}}\] done
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B)
\[{{C}_{n}}{{H}_{2n}}\], done
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C)
\[{{C}_{n}}{{H}_{2n-2}}\] done
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D)
None of these done
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question_answer16)
Organic compounds will always contain
A)
carbon done
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B)
hydrogen done
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C)
nitrogen done
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D)
sulphur done
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question_answer17)
Methane, ethane and propane are said to form a homologous series because all are
A)
hydrocarbons done
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B)
saturated compounds done
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C)
aliphatic compounds done
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D)
differ from each other by a CH group done
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question_answer18)
General formula of alkyne is
A)
\[{{C}_{n}}{{H}_{2n+2}}\] done
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B)
\[{{C}_{n}}{{H}_{2n}}\] done
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C)
\[{{C}_{n}}{{H}_{2n-2}}\] done
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D)
\[{{C}_{n}}{{H}_{n}}\], done
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question_answer19)
Which among the following are unsaturated hydrocarbons?
(i) \[{{H}_{3}}C-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] |
(ii) \[{{H}_{3}}C-C\equiv C-C{{H}_{3}}\] |
(iii) \[{{H}_{3}}C-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\] |
(iv) \[{{H}_{3}}C-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\] |
A)
(i) and (iii) done
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B)
(ii) and (iii) done
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C)
(ii) and (iv) done
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D)
(iii) and (iv) done
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question_answer20)
Pentane has the molecular formula \[{{C}_{5}}{{H}_{12}}\]. It has
A)
5 covalent bonds done
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B)
12 covalent bonds done
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C)
16 covalent bonds done
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D)
17 covalent bonds done
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question_answer21)
The heteroatoms present in\[C{{H}_{3}}-C{{H}_{2}}-O-C{{H}_{2}}Cl\] are
(i) oxygen |
(ii) carbon |
(iii) hydrogen |
(iv) chlorine |
A)
(i) and (ii) done
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B)
(ii) and (iii) done
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C)
(iii) and (iv) done
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D)
(i) and (iv) done
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question_answer22)
Isomers of a substance must have the same
A)
structural formula done
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B)
physical properties done
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C)
chemical properties done
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D)
molecular formula done
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