MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
Oxidation state of an atom represents____________________? |
| A. | Number of electrons gained |
| B. | Number of electrons lost |
| C. | Apparent charge in compound |
| D. | Its vacancies |
| Answer» D. Its vacancies | |
| 1002. |
Which of the following has orange flavour__________________? |
| A. | isobutyl formate |
| B. | octyl acetate |
| C. | ethyl butyrate |
| D. | amyl lactate |
| Answer» C. ethyl butyrate | |
| 1003. |
In the formation of Zwitter ions proton goes from____________________? |
| A. | Carboxyl to amino group |
| B. | Amino to carboxyl group |
| C. | Amino group only |
| D. | Carboxyl group only |
| Answer» B. Amino to carboxyl group | |
| 1004. |
Amino acids present in cheese___________________? |
| A. | lysine |
| B. | alanine |
| C. | tyrosine |
| D. | proline |
| Answer» D. proline | |
| 1005. |
The organic acid that does not has COOH group is___________________? |
| A. | phthalic acid |
| B. | carbolic acid |
| C. | Maleic acid |
| D. | Succinic acid |
| Answer» C. Maleic acid | |
| 1006. |
The aliphatic monocarboxylic acids are obtained by the hydrolysis of________________? |
| A. | proteins and oild |
| B. | fats and proteins |
| C. | fats and oils |
| D. | all above |
| Answer» D. all above | |
| 1007. |
Which of the following is an unsaturated carboxylic acid___________________? |
| A. | malonic acid |
| B. | oxalic acid |
| C. | succinic acid |
| D. | maleic acid |
| Answer» E. | |
| 1008. |
The organic acid that can be made from ethanol is_________________? |
| A. | Acetic acid |
| B. | Formic acid |
| C. | Butanoic acid |
| D. | Citric acid |
| Answer» B. Formic acid | |
| 1009. |
Which one of following amino acid is neither acidic nor a basic in nature ? |
| A. | Lysine |
| B. | Histidine |
| C. | Proline |
| D. | Glutamic acid |
| Answer» D. Glutamic acid | |
| 1010. |
The formula of palmitic acid_________________? |
| A. | C15H31COOH |
| B. | C13H27COOH |
| C. | C17H33COOH |
| D. | C17H35COOH |
| Answer» B. C13H27COOH | |
| 1011. |
Glycine is the name of an amino acid because___________________? |
| A. | Sweet taste |
| B. | Bitter taste |
| C. | Shining appearance |
| D. | Green colour |
| Answer» B. Bitter taste | |
| 1012. |
Tetrahydroborate ion is the source of_______________? |
| A. | proton |
| B. | H+ |
| C. | both A & B |
| D. | H- |
| Answer» E. | |
| 1013. |
Which of the following compounds will react with Tollens reagent ? |
| A. | CH3-CHO |
| B. | CH3-CH-CH3 |
| C. | CH3-COOH |
| D. | CH3-CO-CH2-CH3 |
| Answer» B. CH3-CH-CH3 | |
| 1014. |
The deliquescence is a property in which a solid____________________? |
| A. | Absorbs moisture and remains solid |
| B. | Absorbs moisture and turns to liquid form |
| C. | Loses water of crystallization |
| D. | Increases the number of water of crystallization |
| Answer» C. Loses water of crystallization | |
| 1015. |
Gypsum is applied to the soil as a source of________________? |
| A. | Ca and P |
| B. | S and P |
| C. | Ca and S |
| D. | we could not apply |
| Answer» D. we could not apply | |
| 1016. |
Which of the following will not give addition reaction with NaHSO3________________? |
| A. | HCHO |
| B. | CH3CHO |
| C. | CH3-CH2-CHO |
| D. | None of the above |
| Answer» D. None of the above | |
| 1017. |
Ketones are comparatively less reactive than aldehdye. It is due to_______________? |
| A. | alkyl groups are electron donating |
| B. | steric hindrance |
| C. | Both A and B |
| D. | none |
| Answer» D. none | |
| 1018. |
Oxidation of primary alcohol gives________________? |
| A. | ketone |
| B. | Aldehyde |
| C. | Alkene then – COOH |
| D. | Ester |
| Answer» C. Alkene then – COOH | |
| 1019. |
Ncleophilic addition reactions are catalysed__________________? |
| A. | Acid |
| B. | Base |
| C. | Both A and B |
| D. | None |
| Answer» D. None | |
| 1020. |
Aluminium oxide is_________________? |
| A. | Acidic oxide |
| B. | Basic oxide |
| C. | Amphoteric oxide |
| D. | It does not exists |
| Answer» D. It does not exists | |
| 1021. |
Acetal on acid hydrolysis generates__________________? |
| A. | Alcohol |
| B. | Ketone |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 1022. |
Which of the following reagents will react with both aldehydes and ketones ? |
| A. | Grignard reagent |
| B. | Tollens reagent |
| C. | Fehlings reagent |
| D. | Benedicts reagent |
| Answer» B. Tollens reagent | |
| 1023. |
Dry distillation of calcium acetate results in the formation of_________________? |
| A. | formaldehyde |
| B. | acetaldehyde |
| C. | methane |
| D. | acetone |
| Answer» E. | |
| 1024. |
Which of the following do not give aldol condensation reactions ? |
| A. | formaldehyde |
| B. | acetaldehyde |
| C. | diemthyl ketone |
| D. | propionaldehyde |
| Answer» B. acetaldehyde | |
| 1025. |
Formaldehyde and lactose are combined to produce throat lozenges named as__________________? |
| A. | formamint |
| B. | lactomint |
| C. | aldomint |
| D. | formalactose |
| Answer» B. lactomint | |
| 1026. |
In base catalyzed reaction of carbonyl compound the catalyst___________________? |
| A. | increases the nucleophilic character of reagent |
| B. | increases electrophilic character of carbonyl compound |
| C. | acidic character of reagent |
| D. | both a and b |
| Answer» B. increases electrophilic character of carbonyl compound | |
| 1027. |
Which of the following is a symmetrical ketone___________________? |
| A. | 3 – hexanone |
| B. | acetone |
| C. | butanone |
| D. | 2-pentanone |
| Answer» C. butanone | |
| 1028. |
Formula of Chile saltpetre is__________________? |
| A. | NaNO3 |
| B. | CaCO3 |
| C. | Ba (NO3)2 |
| D. | NH4Cl |
| Answer» B. CaCO3 | |
| 1029. |
A elements are named as alkali metals because_______________? |
| A. | Their oxides are basic |
| B. | Their oxide and hydroxides are water soluble |
| C. | Both A & B |
| D. | They are found in earth |
| Answer» D. They are found in earth | |
| 1030. |
Mixture of catalysts Cr2O3 + A?2O3 + SiO2 at 500?C are used when benzene is prepared from_______________? |
| A. | acetylene |
| B. | N-hexane |
| C. | Benzene sulphonic acid |
| D. | Sodium benzoate |
| Answer» C. Benzene sulphonic acid | |
| 1031. |
Downs cell is used to prepare_________________? |
| A. | Sodium carbonate |
| B. | Sodium bicarbonate |
| C. | Sodium metal |
| D. | Sodium hydroxide |
| Answer» D. Sodium hydroxide | |
| 1032. |
Ammonia may be prepared by heating ammonium chloride with_______________? |
| A. | Water |
| B. | NaCl |
| C. | Aqueous sodium hydroxide |
| D. | H2SO4 |
| Answer» D. H2SO4 | |
| 1033. |
Which one of the following gives white precipitate with aqueous solution of BaCl2? |
| A. | NaHCO3 |
| B. | NaNO3 |
| C. | Na2CO3 |
| D. | Na2CrO4 |
| Answer» D. Na2CrO4 | |
| 1034. |
Crystals of Na2CO3. 10H2O when exposed to air_________________? |
| A. | Lose water and remain solid |
| B. | Gain water and remain solid |
| C. | Gain water and become liquid |
| D. | Remains unchanged |
| Answer» B. Gain water and remain solid | |
| 1035. |
Which ion will have maximum value of heat of hydration ? |
| A. | A1+3 |
| B. | Cs+ |
| C. | Ba+ |
| D. | Mg+2 |
| Answer» B. Cs+ | |
| 1036. |
Which one is natron ? |
| A. | Na2CO3 |
| B. | Na2CO3.10H2O |
| C. | Na2CO3.H2O |
| D. | NaHCO3 |
| Answer» D. NaHCO3 | |
| 1037. |
Which one is least ionic in nature and decompose on heating ? |
| A. | LiOH |
| B. | NaOH |
| C. | KOH |
| D. | CsOH |
| Answer» B. NaOH | |
| 1038. |
Which one of the following substances conducts electricity by the movement of ions ? |
| A. | Graphite |
| B. | Copper |
| C. | Molten sodium chloride |
| D. | Mercury |
| Answer» D. Mercury | |
| 1039. |
The word Alkali means__________________? |
| A. | Base |
| B. | Basic salt |
| C. | Ashes |
| D. | Spirit |
| Answer» D. Spirit | |
| 1040. |
In diaphragm cell hydrogen is discharged by the reduction of__________________? |
| A. | Water |
| B. | HCI |
| C. | Na+ |
| D. | NaCl |
| Answer» B. HCI | |
| 1041. |
Which one of the following carbonate is water insoluble ? |
| A. | Na2CO3 |
| B. | K2CO3 |
| C. | (NH4)2CO3 |
| D. | CaCO3 |
| Answer» E. | |
| 1042. |
Which one of the following alkali metals forms only normal oxide when it reacts with O2 ? |
| A. | Lithium |
| B. | Sodium |
| C. | Potassium |
| D. | Rubidium |
| Answer» B. Sodium | |
| 1043. |
Which one of the following pairs shown diagonal relationship in the periodic table ? |
| A. | Sodium and Lithium |
| B. | Lithium and magnesium |
| C. | Lithium and beryllium |
| D. | Boron and Beryllium |
| Answer» C. Lithium and beryllium | |
| 1044. |
Michael Faraday discovered benzene in the gas which was produced by destructive distillation of vegetable oil that is done in________________? |
| A. | The presence of Oxygen |
| B. | The presence of Hydrogen |
| C. | The absence of Oxygen |
| D. | The presence of excessive Oxygen |
| Answer» D. The presence of excessive Oxygen | |
| 1045. |
Which of the following will give phosphoric acid one reaction with water_________________? |
| A. | PCI5 |
| B. | P2O3 |
| C. | P2O5 |
| D. | All of the above |
| Answer» E. | |
| 1046. |
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Six |
| Answer» C. Four | |
| 1047. |
When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ? |
| A. | Bromine |
| B. | Chlorine |
| C. | Fluorine |
| D. | Iodine |
| Answer» E. | |
| 1048. |
Which compound will readily undergo sulphonation ? |
| A. | Benzene |
| B. | Nitro benzene |
| C. | Toluene |
| D. | Chlorobenzene |
| Answer» D. Chlorobenzene | |
| 1049. |
Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________? |
| A. | Dows process |
| B. | Friedel & Craft acylation |
| C. | Friedel & Craft alkylation |
| D. | Clemmenson reduction |
| Answer» D. Clemmenson reduction | |
| 1050. |
Which one of the following statement is not correct about benzene ? |
| A. | On hydrogenation 208 KJ/mole is liberated |
| B. | C-H bond length in benzene is 1.09 A? |
| C. | Molecular mass of benzene is 78.108 |
| D. | Resonance energy of benzene is 150.5 K Cal/mole |
| Answer» E. | |