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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 5651. |
Which of the following is tertiary alcohol [DPMT 2000] |
| A. | \[\underset{C{{H}_{2}}-OH}{\overset{C{{H}_{2}}-OH\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-OH\,\,\,\,\,}}}\,}}}\,\] |
| B. | \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{C{{H}_{2}}\,\,\,}{\overset{C{{H}_{2}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}-}}}\,}}}\,}}\,}}\,C{{H}_{2}}OH\] |
| C. | \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,}{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-OH\,\,\,\,\,\,}}}\,}}}\,\] |
| D. | \[C{{H}_{3}}-C{{H}_{2}}-OH\] |
| Answer» D. \[C{{H}_{3}}-C{{H}_{2}}-OH\] | |
| 5652. |
Glycerine has [MP PMT/PET 1988; MP PMT 1989, 91; AIIMS 1997] |
| A. | One primary and two secondary\[-OH\] groups |
| B. | One secondary and two primary\[-OH\] groups |
| C. | Three primary \[-OH\] groups |
| D. | Three secondary \[-OH\] groups |
| Answer» C. Three primary \[-OH\] groups | |
| 5653. |
Ortho-dihydroxy benzene is |
| A. | Carvacrol |
| B. | Resorcinol |
| C. | Catechol |
| D. | Orcinol |
| Answer» D. Orcinol | |
| 5654. |
Carbon percentage is maximum in [BHU 1998] |
| A. | Pyrene |
| B. | Gammexane |
| C. | Ethylene glycol |
| D. | PVC |
| Answer» D. PVC | |
| 5655. |
Cresols are |
| A. | Hydroxy toluenes |
| B. | Dihydric phenols |
| C. | Trihydric phenols |
| D. | Trihydric alcohols |
| Answer» B. Dihydric phenols | |
| 5656. |
Glycerol is a [DPMT 1984, 2000; MP PET 2001; J & K 2005] |
| A. | Primary alcohol |
| B. | Monohydric alcohol |
| C. | Secondary alcohol |
| D. | Trihydric alcohol |
| Answer» E. | |
| 5657. |
Which of the following are known as mercaptans [Pb. PMT 2002] |
| A. | Thio-alcohols |
| B. | Thio-ethers |
| C. | Thio-acids |
| D. | Thio-aldehydes |
| Answer» B. Thio-ethers | |
| 5658. |
Nitroglycerine is |
| A. | An ester |
| B. | An alcohol |
| C. | A nitro compound |
| D. | An acid |
| Answer» B. An alcohol | |
| 5659. |
Fermentation is an [CPMT 1977; RPMT 1999] |
| A. | Endothermic reaction |
| B. | Exothermic reaction |
| C. | Reversible reaction |
| D. | None of these |
| Answer» C. Reversible reaction | |
| 5660. |
Structure of diethyl ether is confirmed by [DPMT 1985] |
| A. | Kolbe's synthesis |
| B. | Frankland's synthesis |
| C. | Wurtz's synthesis |
| D. | Williamson's synthesis |
| Answer» E. | |
| 5661. |
The compound which is not isomeric with diethyl ether is [IIT 1981; CPMT 1989; Bihar MEE 1995; MP PET 2001] |
| A. | n-propylmethyl ether |
| B. | Butan-1-ol |
| C. | 2-methylpropan-2-ol |
| D. | Butanone |
| Answer» E. | |
| 5662. |
According to Lewis concept of acids and bases, ether is [CPMT 1994] |
| A. | Acidic |
| B. | Basic |
| C. | Neutral |
| D. | Amphoteric |
| Answer» C. Neutral | |
| 5663. |
In ethers, the C - O - C bond angle is |
| A. | \[{{180}^{o}}\] |
| B. | \[{{90}^{o}}\] |
| C. | \[{{110}^{o}}\] |
| D. | \[{{160}^{o}}\] |
| Answer» D. \[{{160}^{o}}\] | |
| 5664. |
Acetals are [BVP 2003] |
| A. | Ketones |
| B. | Diethers |
| C. | Aldehyde |
| D. | Hydroxy aldehydes |
| Answer» C. Aldehyde | |
| 5665. |
Name of \[{{(C{{H}_{3}})}_{2}}HC-O-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] is [MP PMT 1992] |
| A. | Isopropyl propyl ether |
| B. | Dipropyl ether |
| C. | Di-isopropyl ether |
| D. | Isopropyl propyl ketone |
| Answer» B. Dipropyl ether | |
| 5666. |
Which of the following do not contain an acyl group |
| A. | Acid chloride |
| B. | Amide |
| C. | Ester |
| D. | Ether |
| Answer» E. | |
| 5667. |
3- pentanol is a [RPET 2002] |
| A. | Primary alcohol |
| B. | Secondary alcohol |
| C. | Tertiary alcohol |
| D. | None of these |
| Answer» D. None of these | |
| 5668. |
An example of a compound with the functional group \['-O-'\] is [CPMT 1983] |
| A. | Acetic acid |
| B. | Methyl alcohol |
| C. | Diethyl ether |
| D. | Acetone |
| Answer» D. Acetone | |
| 5669. |
Which of the following is a simple ether [AFMC 1997] |
| A. | \[C{{H}_{3}}OC{{H}_{3}}\] |
| B. | \[{{C}_{2}}{{H}_{5}}OC{{H}_{3}}\] |
| C. | \[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\] |
| D. | \[{{C}_{6}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\] |
| Answer» B. \[{{C}_{2}}{{H}_{5}}OC{{H}_{3}}\] | |
| 5670. |
Oxygen atom in ether is [MP PMT/PET 1988] |
| A. | Very active |
| B. | Replaceable |
| C. | Comparatively inert |
| D. | Active |
| Answer» D. Active | |
| 5671. |
Which of the following is dihydric alcohol [DCE 2004] |
| A. | Glycerol |
| B. | Ethylene glycol |
| C. | Catechol |
| D. | Resorcinol |
| Answer» C. Catechol | |
| 5672. |
Wood spirit is known as [AFMC 2004] |
| A. | Methanol |
| B. | Ethanol |
| C. | Acetone |
| D. | Benzene |
| Answer» B. Ethanol | |
| 5673. |
Absolute alcohol is [RPMT 1997] |
| A. | 100% pure ethanol |
| B. | 95% alcohol + 5% \[{{H}_{2}}O\] |
| C. | Ethanol + water + phenol |
| D. | 95% ethanol + 5% methanol |
| Answer» B. 95% alcohol + 5% \[{{H}_{2}}O\] | |
| 5674. |
Carbolic acid is [MP PET/PMT 1998; RPET 1999; KCET (Engg./Med.) 1999; BHU 2000; MP PET 2003] |
| A. | Phenol |
| B. | Phenyl benzoate |
| C. | Phenyl acetate |
| D. | Salol |
| Answer» B. Phenyl benzoate | |
| 5675. |
Molecular formula of amyl alcohol is |
| A. | \[{{C}_{7}}{{H}_{14}}O\] |
| B. | \[{{C}_{6}}{{H}_{13}}O\] |
| C. | \[{{C}_{5}}{{H}_{12}}O\] |
| D. | \[{{C}_{5}}{{H}_{10}}O\] |
| Answer» D. \[{{C}_{5}}{{H}_{10}}O\] | |
| 5676. |
Methylated spirit is |
| A. | Methanol |
| B. | Methanol + ethanol |
| C. | Methanoic acid |
| D. | Methanamide |
| Answer» C. Methanoic acid | |
| 5677. |
Picric acid is [CPMT 1971, 80, 81; DPMT 1983; MP PMT 1990; BHU 1996] |
| A. | Trinitroaniline |
| B. | Trinitrotoluene |
| C. | A volatile liquid |
| D. | 2, 4, 6 trinitrophenol |
| Answer» E. | |
| 5678. |
The compound \[HOC{{H}_{2}}-C{{H}_{2}}OH\] is |
| A. | Ethane glycol |
| B. | Ethylene glycol |
| C. | Ethylidene alcohol |
| D. | Dimethyl alcohol |
| Answer» C. Ethylidene alcohol | |
| 5679. |
Which of the following are isomers [AFMC 2005; BCECE 2005] |
| A. | Methyl alcohol and dimethyl ether |
| B. | Ethyl alcohol and dimethyl ether |
| C. | Acetone and acetaldehyde |
| D. | Propionic acid and propanone |
| Answer» C. Acetone and acetaldehyde | |
| 5680. |
The characteristic grouping of secondary alcohols is [DPMT 1984] |
| A. | \[-C{{H}_{2}}OH\] |
| B. | \[>CHOH\] |
| C. | \[-\underset{|}{\overset{|}{\mathop{C}}}\,-OH\] |
| D. | \[>C<\begin{matrix} OH \\ OH \\ \end{matrix}\] |
| Answer» C. \[-\underset{|}{\overset{|}{\mathop{C}}}\,-OH\] | |
| 5681. |
Cyclohexanol is a |
| A. | Primary alcohol |
| B. | Secondary alcohol |
| C. | Tertiary alcohol |
| D. | Phenol |
| Answer» C. Tertiary alcohol | |
| 5682. |
Butanal is an example of [MP PET 1991] |
| A. | Primary alcohol |
| B. | Secondary alcohol |
| C. | Aliphatic aldehyde |
| D. | Aliphatic ketone |
| Answer» D. Aliphatic ketone | |
| 5683. |
1, 2, 3-trihydroxybenzene is also known as |
| A. | Pyrogallol |
| B. | Phloroglucinol |
| C. | Resorcinol |
| D. | Quinol |
| Answer» B. Phloroglucinol | |
| 5684. |
Which of following is phenolic [J & K 2005] |
| A. | Phthalic acid |
| B. | Phosphoric acid |
| C. | Picric acid |
| D. | Phenylacetic acid |
| Answer» D. Phenylacetic acid | |
| 5685. |
General formula of primary alcohol is [CPMT 1975] |
| A. | \[>CHOH\] |
| B. | \[>-C-OH\] |
| C. | \[-C{{H}_{2}}OH\] |
| D. | \[=C\begin{matrix} {} & OH & {} \\ < & {} & {} \\ {} & OH & {} \\ \end{matrix}\] |
| Answer» D. \[=C\begin{matrix} {} & OH & {} \\ < & {} & {} \\ {} & OH & {} \\ \end{matrix}\] | |
| 5686. |
Carbinol is [RPMT 2000] |
| A. | \[{{C}_{2}}{{H}_{5}}OH\] |
| B. | \[C{{H}_{3}}OH\] |
| C. | \[{{(C{{H}_{3}})}_{2}}CHOH\] |
| D. | \[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{3}}\] |
| Answer» C. \[{{(C{{H}_{3}})}_{2}}CHOH\] | |
| 5687. |
Which is primary alcohol [CPMT 1980] |
| A. | Butane-2-ol |
| B. | Butane-1-ol |
| C. | Propane-2-ol |
| D. | Isopropyl alcohol |
| Answer» C. Propane-2-ol | |
| 5688. |
Butane-2-ol is [CPMT 1977, 89] |
| A. | Primary alcohol |
| B. | Secondary alcohol |
| C. | Tertiary alcohol |
| D. | Aldehyde |
| Answer» C. Tertiary alcohol | |
| 5689. |
Paramagnetism is exhibited by molecules [NCERT 1981; Manipal MEE 1995] |
| A. | Not attracted in a magnetic field |
| B. | Containing only paired electrons |
| C. | Carrying a positive charge |
| D. | Carrying unpaired electrons |
| Answer» E. | |
| 5690. |
The most malleable of all the metals is |
| A. | Silver |
| B. | Sodium |
| C. | Gold |
| D. | Platinum |
| Answer» D. Platinum | |
| 5691. |
Which of the following is not true for transition metals [MP PET 1993] |
| A. | They are malleable and ductile |
| B. | They have high boiling and melting points |
| C. | They crystallize with body centred cubic and hexagonal close-packed structures only |
| D. | They show variable oxidation states although not always |
| Answer» D. They show variable oxidation states although not always | |
| 5692. |
Among the following outermost configurations of transition metals, which shows the highest oxidation state [MP PMT 1993; MP PET 1995, 2001] |
| A. | \[3{{d}^{3}}4{{s}^{2}}\] |
| B. | \[3{{d}^{5}}4{{s}^{1}}\] |
| C. | \[3{{d}^{5}}4{{s}^{2}}\] |
| D. | \[3{{d}^{6}}4{{s}^{2}}\] |
| Answer» D. \[3{{d}^{6}}4{{s}^{2}}\] | |
| 5693. |
Which of the following ions has the least magnetic moment [MP PMT 1993] |
| A. | \[C{{u}^{+2}}\] |
| B. | \[N{{i}^{+2}}\] |
| C. | \[C{{o}^{+3}}\] |
| D. | \[F{{e}^{+2}}\] |
| Answer» B. \[N{{i}^{+2}}\] | |
| 5694. |
Which element gives maximum balanced oxide [MP PMT 1990] |
| A. | \[V\] |
| B. | \[Cr\] |
| C. | \[Mn\] |
| D. | \[Fe\] |
| Answer» D. \[Fe\] | |
| 5695. |
Which of the following general configuration of outermost shell represents chromium element [Cr?s atomic number = 24] [CBSE PMT 1991; MP PMT 1992, 2001; RPET/PMT 1999] |
| A. | \[{{d}^{5}}{{s}^{1}}\] |
| B. | \[{{d}^{6}}{{s}^{0}}\] |
| C. | \[{{d}^{4}}{{s}^{2}}\] |
| D. | \[{{d}^{3}}{{s}^{2}}\] |
| Answer» B. \[{{d}^{6}}{{s}^{0}}\] | |
| 5696. |
The element having general electronic configuration \[3{{d}^{4}}4{{s}^{1}}\] is [BHU 1978; CPMT 1987] |
| A. | Noble gas |
| B. | Non-metal |
| C. | Metalloid |
| D. | Transition metal |
| Answer» E. | |
| 5697. |
In the periodic table first transition series is placed in |
| A. | Third period |
| B. | Fourth period |
| C. | Fifth period |
| D. | None of these |
| Answer» C. Fifth period | |
| 5698. |
If the colours of salts of transition elements are due to the presence of unpaired electrons in the transition metal ions, which of the following ions will be colourless in aqueous solution |
| A. | \[T{{i}^{3+}}\] |
| B. | \[T{{i}^{4+}}\] |
| C. | \[F{{e}^{2+}}\] |
| D. | \[F{{e}^{3+}}\] (The at. no. of \[Ti\] and \[Fe\] are 22 and 26 respectively) |
| Answer» C. \[F{{e}^{2+}}\] | |
| 5699. |
Magnetic moment is expressed in |
| A. | Faraday |
| B. | Calorie |
| C. | Bohr Magneton |
| D. | Debye |
| Answer» D. Debye | |
| 5700. |
Which of the following will give green hydrated ion |
| A. | \[F{{e}^{+2}}\] |
| B. | \[N{{i}^{+2}}\] |
| C. | a and b both |
| D. | \[{{V}^{+3}}\] |
| Answer» D. \[{{V}^{+3}}\] | |