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