Chemistry MCQ (Multiple Choice Questions) - SchoolingAxis

Chemistry MCQ (Multiple Choice Questions)

 Que- Melting points of VII-A group elements down the group ____________________? 

a. Increase  

b. Decrease  

c. Remain constant  

d. No regular trend 


Answer- Increase


Que- Which of the following possesses maximum hydration energy ? 

a. Na+  

b. K+  

c. Mg+2  

d. Ca+2 


Answer- Mg+2


Que- True increasing order of acidity of the oxides of Mn is_________________? 

a. MnO < MnO2 < Mn2O7  

b. Mn2O7 > MnO2 > MnO  

c. MnO2 > MnO > Mn2O7  

d. MnO2 > Mn2O7 > MnO 


Answer- Mn2O7 > MnO2 > MnO


Que- Which one of the following element has highest oxidation state in its compounds ? 

a. Cr  

b. Mn  

c. Sn  

d. O 


Answer- Mn


Que- Which of the following cannot exist in solution_________________? 

a. O-2  

b. H+  

c. Cl-  

d. Na+ 


Answer- O-2


Que- An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________? 

a. Group IA  

b. Group IB  

c. Group VIIA  

d. Group VIII 


Answer- Group IA


Que- Which of the following always increases on going from top to bottom in a group ? 

a. Metallic character  

b. Electronegativity  

c. Oxidizing power  

d. Tendency to get reduced 


Answer- Metallic character


Que- Among halogens the highest boiling point is of___________________? 

a. Flrorine  

b. Chlorine  

c. Bromine  

d. Iodine 


Answer- Iodine


Que- The scientist who did not contribute in the construction of periodic table ? 

a. Al-Razi  

b. Moseley  

c. Dobereiner  

d. Democritus 


Answer- Democritus


Que- Which element was not known when Mendeleev proposed his classification ? 

a. Hydrogen  

b. Sodium  

c. Copper  

d. Germanium 


Answer- Germanium


Que- Noble gases are named so because they are__________________? 

a. less reactive  

b. Zero group elements  

c. Having completely filled valence shell  

d. All 


Answer- All


Que- The longest period in the modern periodic table is___________________? 

a. 6th  

b. 7th  

c. 2nd and 3rd both  

d. 5th 


Answer- 6th


Que- Seventh period contains _________________ normal elements ? 

a. 2  

b. 4  

c. 6  

d. 8 


Answer- 2


Que- Modern periodic table has been divided in ___________ blocks? 

a. 2  

b. 4  

c. 8  

d. 7 


Answer- 4


Que- Amphoteric exides are those which possess ____________ properties? 

a. Acidic  

b. Basic  

c. Acidic and basic  

d. Neutral and acidic 


Answer- Acidic and basic


Que- Hydrogen resembles with carbon because of having________________? 

a. Same number of electrons in the valence shell  

b. Similar physical state  

c. Remarkable reducing properties  

d. Homovalent (show same valency) 


Answer- Remarkable reducing properties


Que- In which of the following pairs are elements belonging to the same group ? 

a. Boron & Beryllium  

b. Nitrogen & Phosphorous  

c. Magnesium & Aluminium  

d. Gallium & Helium 


Answer- Nitrogen & Phosphorous


Que- Which one of the following is not a periodic property ? 

a. Melting point of elements  

b. Boiling point of elements  

c. Ionization energy of elements  

d. Coordination number of ions 


Answer- Coordination number of ions


Que- Which discovery caused a revision in the periodic law as stated by Mendeleev ? 

a. Location of nucleus by Rutherford  

b. Atomic number by Moseley  

c. X-rays by Roentgen  

d. Natural radioactivity by Henry Bacquerel. 


Answer- Atomic number by Moseley


Que- The property which increases upto group IV-A then decreases on wards_______________? 

a. Ionization energy  

b. Atomic radii  

c. Melting & boiling points  

d. Atomic volume 


Answer- Melting & boiling points


Que- Deuterium reacts with oxygen to form________________? 

a. Hard water  

b. Heavy water  

c. Soft water  

d. Water gas 


Answer- Heavy water


Que- Ionization energy depends upon____________________? 

a. Nuclear charge  

b. Atomic size  

c. Shielding effect  

d. I.E depends upon all of the above and nature of orbital 


Answer- I.E depends upon all of the above and nature of orbital


Que- Addition of 2nd electron to a uni negative ion is always____________________? 

a. Exothermic  

b. Endothermic  

c. Data is insufficient  

d. Unpredictable 


Answer- Endothermic


Que- Metallic characters of alkali metals_____________________? 

a. Increase down the group  

b. Decrease down the group  

c. No regular trend  

d. Remain same 


Answer- Increase down the group


Que- 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- Apparent charge in compound


Que- Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________? 

a. Covalent halides  

b. Electronegative halides  

c. Polymeric halides  

d. Polymeric hydrides 


Answer- Polymeric halides


Que- Iodine is solid due to_________________? 

a. Strong covalent bond  

b. Large value of dipole moment  

c. High polarizability  

d. Strong hydrogen bonding 


Answer- High polarizability


Que- Keeping in view the size of atom which order is correct one ? 

a. Mg > Sr  

b. Ba > Mg  

c. Lu > Ce  

d. C1 > I 


Answer- Ba > Mg


Que- When – COOH is attached directly to the benzene ring the acid is called__________________? 

a. Aliphatic  

b. Alicyclic  

c. Carboxylic  

d. Aromatic 


Answer- Aromatic


Que- The common thing in phthalic acid and oxalic acid is that both are_________________? 

a. Aromatic  

b. Dicarboxylic  

c. Hydrocarbons  

d. Strong acids 


Answer- Dicarboxylic


Que- The acid which is used as ink remover is_________________? 

a. Oxalic acid  

b. Succinic acid  

c. Adipic acid  

d. Acetic acid 


Answer- Oxalic acid


Que- Which acid is the manufacture of synthetic rubber ? 

a. Acetic acid  

b. Formic acid  

c. Carbonic acid  

d. Benzoic acid 


Answer- Acetic acid


Que- 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- Carboxyl to amino group


Que- The organic acid that does not has COOH group is___________________? 

a. phthalic acid  

b. carbolic acid  

c. Maleic acid  

d. Succinic acid 


Answer- carbolic acid


Que- The test which is used for the identification of amino-acids is_________________? 

a. Ninhydrin test  

b. Molisch test  

c. Biuretic test  

d. Benedict test 


Answer- Ninhydrin test


Que- Carboxylic acid reacts with ammonia to form ammonium salts which on heating produces_______________? 

a. CO2  

b. Alkane  

c. Ester  

d. Acidamide 


Answer- Acidamide


Que- The complete reduction carboxylic acid results in the formation of________________? 

a. Alkyne  

b. Alkene  

c. Alkane  

d. Alcohol 


Answer- Alkane


Que- Picric acid is_________________? 

a. monocarboxylc acid  

b. dicarboxylic acid  

c. aromatic carboxylic acid  

d. none of these 


Answer- none of these


Que- Essential amino acids are___________________? 

a. 5  

b. 10  

c. 15  

d. 20 


Answer- 10


Que- Which of the following is not a fatty acid ? 

a. Propanoic acid  

b. Acetic acid  

c. Phthalic acid  

d. Butanoic acid 


Answer- Phthalic acid


Que- The basic hydrolysis of ethyl acetate produces__________________? 

a. ethanol  

b. acetic acid  

c. ethanol and acetic acid  

d. ethanol and sodium acetate 


Answer- ethanol and sodium acetate


Que- Which of the following is not an ester_________________? 

a. amyl acetate  

b. sodium butyrate  

c. isobutyle formate  

d. octyl acetate 


Answer- sodium butyrate


Que- Which of the following has orange flavour__________________? 

a. isobutyl formate  

b. octyl acetate  

c. ethyl butyrate  

d. amyl lactate 


Answer- octyl acetate


Que- Amino acids present in cheese___________________? 

a. lysine  

b. alanine  

c. tyrosine  

d. proline 


Answer- tyrosine


Que- Which of the following is an unsaturated carboxylic acid___________________? 

a. malonic acid  

b. oxalic acid  

c. succinic acid  

d. maleic acid 


Answer- maleic acid


Que- The common name of propane 1 3-dioic is_________________? 

a. Oxalic acid  

b. Aromatic acid  

c. Malonic acid  

d. Fumaric acid 


Answer- Malonic acid


Que- The irritation caused by red ants bite is due to____________________? 

a. Lactic acid  

b. Formic acid  

c. Uric acid  

d. Acetic acid 


Answer- Formic acid


Que- Which of the following is the strongest acid ? 

a. Water  

b. Formic acid  

c. Acetic acid  

d. Propanoic acid 


Answer- Formic acid


Que- Acidic amino acids have________________? 

a. 2 amino groups and 1 carboxylic group  

b. 1 amino and 1 carboxylic groups  

c. 2 carboxylic groups and 1 amino group  

d. 2 amino and 2 carboxylic groups 


Answer- 2 carboxylic groups and 1 amino group


Que- The term internal salt refers to_____________________? 

a. Acidic character of amino acids  

b. Basic character of amino acids  

c. Dipolar character of amino acids  

d. Non-polar structure of amino acids 


Answer- Dipolar character of amino acids


Que- Which one of the following acids is present in lemon juice ? 

a. Citric acid  

b. Benzoic acid  

c. Tartaric acid  

d. Oxalic acid 


Answer- Citric acid


Que- Which one of following amino acid is neither acidic nor a basic in nature ? 

a. Lysine  

b. Histidine  

c. Proline  

d. Glutamic acid 


Answer- Proline


Que- Glycine is the name of an amino acid because___________________? 

a. Sweet taste  

b. Bitter taste  

c. Shining appearance  

d. Green colour 


Answer- Sweet taste


Que- The organic acid that can be made from ethanol is_________________? 

a. Acetic acid  

b. Formic acid  

c. Butanoic acid  

d. Citric acid 


Answer- Acetic acid


Que- The formula of palmitic acid_________________? 

a. C15H31COOH  

b. C13H27COOH  

c. C17H33COOH  

d. C17H35COOH 


Answer- C15H31COOH


Que- 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- fats and oils


Que- An acid with unpleasant smell_________________? 

a. formic acid  

b. acetic acid  

c. propionic acid  

d. butyric acid 


Answer- butyric acid


Que- Carboxylic acid on reduction with HI / phosphorous yields_________________? 

a. alkane  

b. alcohols  

c. aldehydes  

d. ketones 


Answer- alkane


Que- The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________? 

a. esterification  

b. neutralization  

c. hydrolysis  

d. saponification 


Answer- esterification


Que- Which of the following is not an amino acids_____________________? 

a. glumatic acid  

b. lactic acid  

c. aspartic acids  

d. glycine 


Answer- lactic acid


Que- Which of the following reaction is not shown by ketones ? 

a. reaction with HCN  

b. reaction with NaHSO3  

c. reaction with 2 4 dinitrophenyl hydrazine  

d. reaction with Fehling solution 


Answer- reaction with Fehling solution


Que- Which of the following substances does not give iodoform test ? 

a. acetaldehyde  

b. ethyl alcohol  

c. methyl alcohol  

d. acetone 


Answer- methyl alcohol


Que- Which of the following aldehydes shows rapid reaction with sodium nitroprusside ? 

a. formaldehyde  

b. accetaldehyde  

c. benzaldehyde  

d. acetone 


Answer- acetone


Que- Which of the following reaction is not shown by ketones ? 

a. reaction with HCN  

b. reaction with NaHSO3  

c. reaction with 2 4 dinitrophenyl hydrazine  

d. reaction with Fehling solution 


Answer- reaction with Fehling solution


Que- Which of the following substances does not give iodoform test ? 

a. acetaldehyde  

b. ethyl alcohol  

c. methyl alcohol  

d. acetone 


Answer- methyl alcohol


Que- 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- CH3-CHO


Que- Cannizzaros reaction is not given by__________________? 

a. formaldehyde  

b. acetaldehyde  

c. benzaldehyde  

d. trimethyl acetaldehyde 


Answer- acetaldehyde


Que- 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- Both A and B


Que- Which of the following is not a use of formaldehyde ? 

a. in silvery mirror  

b. in making medicine urotropine  

c. in making throat lozenges  

d. in making acetic acid 


Answer- in making acetic acid


Que- Which of the following is not a use of acetaldehyde ? 

a. formation of phenolic resins  

b. formation of mirror  

c. antiseptic inhalant  

d. formation of throat lozenges 


Answer- formation of throat lozenges


Que- Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________? 

a. Nylon 66  

b. urotropine  

c. Aniline formaldehyde plastic  

d. Bakelite 


Answer- Bakelite


Que- 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- CH3-CH2-CHO


Que- Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ? 

a. carbonic acid  

b. ethanol  

c. acetic acid  

d. methanoic acid 


Answer- acetic acid


Que- Oxidation of primary alcohol gives________________? 

a. ketone  

b. Aldehyde  

c. Alkene then – COOH  

d. Ester 


Answer- Aldehyde


Que- Ncleophilic addition reactions are catalysed__________________? 

a. Acid  

b. Base  

c. Both A and B  

d. None 


Answer- Both A and B


Que- Acetal on acid hydrolysis generates__________________? 

a. Alcohol  

b. Ketone  

c. Both A & B  

d. None of the above 


Answer- Both A & B


Que- Tetrahydroborate ion is the source of_______________? 

a. proton  

b. H+  

c. both A & amp; B  

d. H- 


Answer- H-


Que- Dry distillation of calcium acetate results in the formation of_________________? 

a. formaldehyde  

b. acetaldehyde  

c. methane  

d. acetone 


Answer- acetone


Que- Cannizaros reaction takes place through the transfer of ____________________ from complex anion? 

a. hydrogen ion  

b. hydride ion  

c. oxide ion  

d. methoxide ion 


Answer- hydride ion


Que- Iodoform test can be used to distinguish between_________________? 

a. ethanol and methanol  

b. acetaldehyde and methanal  

c. acetone and diethyl ketone  

d. all of the above 


Answer- all of the above


Que- Which of the following will have the highest boiling point ? 

a. methanol  

b. ethanal  

c. propanal  

d. hexanone 


Answer- hexanone


Que- The carbon atom of carbonyl group is__________________? 

a. sp hybridized  

b. sp2 hybridized  

c. cp3 hybridized  

d. dsp2 hybridized 


Answer- sp2 hybridized


Que- Formalin is ___________ solution of formaldehyde in water? 

a. 10%  

b. 20%  

c. 40%  

d. 60% 


Answer- 40%


Que- Acetone reacts with HCN to form a cyanohydrin. It is an example of________________? 

a. electronphilic addition  

b. electrophilic substitution  

c. nucleophilic addition  

d. nucleophilic substitution 


Answer- nucleophilic addition


Que- Which of the following reactions may be assoclated with aldehyde and ketone ? 

a. nucleophile addition  

b. polymerization  

c. oxidation  

d. all of the above 


Answer- all of the above


Que- 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- Grignard reagent


Que- Which of the following do not give aldol condensation reactions ? 

a. formaldehyde  

b. acetaldehyde  

c. diemthyl ketone  

d. propionaldehyde 


Answer- formaldehyde


Que- Formaldehyde and lactose are combined to produce throat lozenges named as__________________? 

a. formamint  

b. lactomint  

c. aldomint  

d. formalactose 


Answer- formamint


Que- Formula of haloform is_________________? 

a. HCOX  

b. CX4  

c. CHX3  

d. CH3X 


Answer- CHX3


Que- Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________? 

a. 60%  

b. 50%  

c. 52%  

d. 8% 


Answer- 52%


Que- On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________? 

a. pink  

b. black  

c. yellow  

d. brick red 


Answer- brick red


Que- Aldehyde and ketone have same general formula for homologous series_________________? 

a. CnH2nO2n  

b. CnH2n  

c. CnH2nO  

d. CnH2nOn+1 


Answer- CnH2nO


Que- Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter? 

a. PdCl2  

b. Cu2Cl2  

c. CuCl2  

d. PbCl2 


Answer- CuCl2


Que- Acetaldehyele cyanohydrin on acid hydrolysis yields___________________? 

a. Tartaric acid  

b. Propanoic acid  

c. Lactic acid  

d. Valeric acid 


Answer- Lactic acid


Que- Which one exhibits aldol condensation____________________? 

a. HCHO  

b. C6H5CHO  

c. Cl3CCHO  

d. CH3COCH3 


Answer- CH3COCH3


Que- Which of the following is a symmetrical ketone___________________? 

a. 3 – hexanone  

b. acetone  

c. butanone  

d. 2-pentanone 


Answer- acetone


Que- 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- increases the nucleophilic character of reagent


Que- 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- Both A & B


Que- Formula of Chile saltpetre is__________________? 

a. NaNO3  

b. CaCO3  

c. Ba (NO3)2  

d. NH4Cl 


Answer- NaNO3


Que- The oxides of beryllium BeO is_______________? 

a. Acidic  

b. Basic  

c. Amphoteric  

d. Neutral 


Answer- Amphoteric

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