Chemistry MCQs

Option A: acetylene

Option B: N-hexane

Option C: Benzene sulphonic acid

Option D: Sodium benzoate

Correct Answer: N-hexane ✔

Option A: Benzyl chloride

Option B: o – chlorotoluene

Option C: p – chlorotoluene

Option D: benzoic acid

Correct Answer: Benzyl chloride ✔

Option A: Specific gravity method

Option B: Vapour density method

Option C: X-ray diffraction method

Option D: Distillation methos

Correct Answer: Vapour density method ✔

Option A: o – chloronitrobenzene

Option B: p – chloronitrobenzene

Option C: m – chloronitrobenzene

Option D: A & B

Correct Answer: A & B ✔

Option A: Imino group

Option B: Amino group

Option C: Amide group

Option D: Nitro group

Correct Answer: Amino group ✔

Option A: Hydrogen

Option B: Oxygen

Option C: Sulphur

Option D: OH

Correct Answer: Sulphur ✔

Option A: Glyoxime

Option B: Benzaldehyde

Option C: Glycol

Option D: Glyoxal

Correct Answer: Glyoxal ✔

Option A: C6H6O9

Option B: C6H5O8

Option C: C6H5O9

Option D: C6H6O6

Correct Answer: C6H6O9 ✔

Option A: Toluene

Option B: Ethyl benzene

Option C: n-propyl benzene

Option D: All

Correct Answer: All ✔

Option A: Dows process

Option B: Friedel & Craft acylation

Option C: Friedel & Craft alkylation

Option D: Clemmenson reduction

Correct Answer: Friedel & Craft alkylation ✔

Option A: On hydrogenation 208 KJ/mole is liberated

Option B: C-H bond length in benzene is 1.09 A?

Option C: Molecular mass of benzene is 78.108

Option D: Resonance energy of benzene is 150.5 K Cal/mole

Correct Answer: Resonance energy of benzene is 150.5 K Cal/mole ✔

Option A: Benzene

Option B: Nitro benzene

Option C: Toluene

Option D: Chlorobenzene

Correct Answer: Toluene ✔

Option A: HSO4-

Option B: SO2

Option C: SO3

Option D: H+

Correct Answer: SO3 ✔

Option A: The rupturing of benzene ring

Option B: Substitution reaction

Option C: Addition reaction

Option D: No-reaction

Correct Answer: Addition reaction ✔

Option A: Heating sod. Salt of Benzoic acid with soda lime

Option B: Distilling phenol with Zn dust

Option C: Chlorobenzene with NaOH at 360°C & 150atm.

Option D: Hydrolysis of benzene sulphonic acid with super heated steam

Correct Answer: Chlorobenzene with NaOH at 360°C & 150atm. ✔

Option A: Cr2O3 + A2O3 + SiO2

Option B: Raney nickel

Option C: Organo-nickel

Option D: Ni 250 – 300°C

Correct Answer: Organo-nickel ✔

Option A: 150.5 kJ/mol

Option B: 250.5 kJ/mol

Option C: 150.5 Cal/mol

Option D: 250.5 Cal/mol

Correct Answer: 150.5 kJ/mol ✔

Option A: Two

Option B: Three

Option C: Four

Option D: Six

Correct Answer: Three ✔

Option A: The presence of Oxygen

Option B: The presence of Hydrogen

Option C: The absence of Oxygen

Option D: The presence of excessive Oxygen

Correct Answer: The absence of Oxygen ✔

Option A: Bromine

Option B: Chlorine

Option C: Fluorine

Option D: Iodine

Correct Answer: Iodine ✔

Option A: 3

Option B: 4

Option C: 6

Option D: 8

Correct Answer: 6 ✔

Option A: Two

Option B: Three

Option C: Four

Option D: Five

Correct Answer: Three ✔

Option A: Triggers hydration

Option B: Triggers hydrolysis

Option C: Prevents rapid hardening

Option D: all of the above

Correct Answer: Prevents rapid hardening ✔

Option A: Na

Option B: Cr

Option C: Li

Option D: K

Correct Answer: Li ✔

Option A: being s-block elements

Option B: inert gas configurations

Option C: ns1 electronic configuration

Option D: being metals

Correct Answer: inert gas configurations ✔

Option A: N2

Option B: O2

Option C: N2 and O2

Option D: Ne

Correct Answer: Ne ✔

Option A: high first ionization potential

Option B: high second ioniation potential

Option C: high ionic radius

Option D: high electronegativity

Correct Answer: high second ioniation potential ✔

Option A: Sodium and Lithium

Option B: Lithium and magnesium

Option C: Lithium and beryllium

Option D: Boron and Beryllium

Correct Answer: Lithium and magnesium ✔

Option A: Lithium

Option B: Sodium

Option C: Potassium

Option D: Rubidium

Correct Answer: Lithium ✔

Option A: Ca and P

Option B: S and P

Option C: Ca and S

Option D: we could not apply

Correct Answer: Ca and S ✔

Option A: Water

Option B: HCI

Option C: Na+

Option D: NaCl

Correct Answer: Water ✔

Option A: Na2CO3

Option B: K2CO3

Option C: (NH4)2CO3

Option D: CaCO3

Correct Answer: CaCO3 ✔

Option A: Graphite

Option B: Copper

Option C: Molten sodium chloride

Option D: Mercury

Correct Answer: Molten sodium chloride ✔

Option A: Gypsum

Option B: Dolomite

Option C: Calcite

Option D: Plaster of Paris

Correct Answer: Gypsum ✔

Option A: Sodium sulphate

Option B: Potassium sulphate

Option C: Zinc sulphate

Option D: Barium sulphate

Correct Answer: Barium sulphate ✔

Option A: Na K

Option B: Mg Ca

Option C: Li Na

Option D: Li Ca

Correct Answer: Li Na ✔

Option A: Si

Option B: Ba

Option C: Mg

Option D: Ca

Correct Answer: Ca ✔

Option A: Base

Option B: Basic salt

Option C: Ashes

Option D: Spirit

Correct Answer: Ashes ✔

Option A: LiOH

Option B: NaOH

Option C: KOH

Option D: CsOH

Correct Answer: LiOH ✔

Option A: Na2CO3

Option B: Na2CO3.10H2O

Option C: Na2CO3.H2O

Option D: NaHCO3

Correct Answer: Na2CO3 ✔

Option A: A1+3

Option B: Cs+

Option C: Ba+

Option D: Mg+2

Correct Answer: A1+3 ✔

Option A: sodium

Option B: hydrogen

Option C: chlorine

Option D: oxygen

Correct Answer: oxygen ✔

Option A: KCI

Option B: KCI.MgCl2.6H2O

Option C: Na2B4O7.10H2O

Option D: CaCO3.MgCO3

Correct Answer: KCI ✔

Option A: It corrodes the organic tissues

Option B: It is used in soda water

Option C: It reacts with chlorine gas

Option D: It reacts with fats to form soap

Correct Answer: It corrodes the organic tissues ✔

Option A: They are more reactive

Option B: They have greater atomic radii

Option C: They have smaller atomic sizes

Option D: All

Correct Answer: They have smaller atomic sizes ✔

Option A: Smaller electronegativity of alkali metals

Option B: Smaller ionic radius of these metals

Option C: De-excitation of electrons from higher energy levels to low energy level

Option D: Excitation of electrons from low energy levels to higher energy levels

Correct Answer: De-excitation of electrons from higher energy levels to low energy level ✔

Option A: Hydroxide ions to reach anode

Option B: Chlorine gas to mix

Option C: Cathode to decay

Option D: All of the above

Correct Answer: Hydroxide ions to reach anode ✔

Option A: Absorbs moisture and remains solid

Option B: Absorbs moisture and turns to liquid form

Option C: Loses water of crystallization

Option D: Increases the number of water of crystallization

Correct Answer: Absorbs moisture and turns to liquid form ✔

Option A: NaHCO3

Option B: NaNO3

Option C: Na2CO3

Option D: Na2CrO4

Correct Answer: Na2CO3 ✔

Option A: Lose water and remain solid

Option B: Gain water and remain solid

Option C: Gain water and become liquid

Option D: Remains unchanged

Correct Answer: Lose water and remain solid ✔

Option A: Water

Option B: NaCl

Option C: Aqueous sodium hydroxide

Option D: H2SO4

Correct Answer: Aqueous sodium hydroxide ✔

Option A: Sodium carbonate

Option B: Sodium bicarbonate

Option C: Sodium metal

Option D: Sodium hydroxide

Correct Answer: Sodium metal ✔

Option A: Ca

Option B: Cr

Option C: Both of the above

Option D: None of the above

Correct Answer: None of the above ✔

Option A: Francium

Option B: Caesium

Option C: Rubidium

Option D: Radium

Correct Answer: Radium ✔

Option A: Low electronegativity

Option B: Low electropositivity

Option C: Low charge density

Option D: Not known yet

Correct Answer: Low electropositivity ✔

Option A: small size

Option B: high charge density

Option C: less electropositivity

Option D: all of the above

Correct Answer: all of the above ✔

Option A: Acidic

Option B: Basic

Option C: Amphoteric

Option D: Neutral

Correct Answer: Amphoteric ✔

Option A: NaNO3

Option B: CaCO3

Option C: Ba (NO3)2

Option D: NH4Cl

Correct Answer: NaNO3 ✔

Option A: Their oxides are basic

Option B: Their oxide and hydroxides are water soluble

Option C: Both A & B

Option D: They are found in earth

Correct Answer: Both A & B ✔

Option A: increases the nucleophilic character of reagent

Option B: increases electrophilic character of carbonyl compound

Option C: acidic character of reagent

Option D: both a and b

Correct Answer: increases the nucleophilic character of reagent ✔

Option A: 3 – hexanone

Option B: acetone

Option C: butanone

Option D: 2-pentanone

Correct Answer: acetone ✔

Option A: HCHO

Option B: C6H5CHO

Option C: Cl3CCHO

Option D: CH3COCH3

Correct Answer: CH3COCH3 ✔

Option A: Tartaric acid

Option B: Propanoic acid

Option C: Lactic acid

Option D: Valeric acid

Correct Answer: Lactic acid ✔

Option A: PdCl2

Option B: Cu2Cl2

Option C: CuCl2

Option D: PbCl2

Correct Answer: CuCl2 ✔

Option A: CnH2nO2n

Option B: CnH2n

Option C: CnH2nO

Option D: CnH2nOn+1

Correct Answer: CnH2n ✔

Option A: pink

Option B: black

Option C: yellow

Option D: brick red

Correct Answer: brick red ✔

Option A: 60%

Option B: 50%

Option C: 52%

Option D: 8%

Correct Answer: 52% ✔

Option A: HCOX

Option B: CX4

Option C: CHX3

Option D: CH3X

Correct Answer: CHX3 ✔

Option A: formamint

Option B: lactomint

Option C: aldomint

Option D: formalactose

Correct Answer: formamint ✔

Option A: formaldehyde

Option B: acetaldehyde

Option C: diemthyl ketone

Option D: propionaldehyde

Correct Answer: formaldehyde ✔

Option A: Grignard reagent

Option B: Tollens reagent

Option C: Fehlings reagent

Option D: Benedicts reagent

Correct Answer: Grignard reagent ✔

Option A: nucleophile addition

Option B: polymerization

Option C: oxidation

Option D: all of the above

Correct Answer: all of the above ✔

Option A: electronphilic addition

Option B: electrophilic substitution

Option C: nucleophilic addition

Option D: nucleophilic substitution

Correct Answer: nucleophilic addition ✔

Option A: 10%

Option B: 20%

Option C: 40%

Option D: 60%

Correct Answer: 40% ✔

Option A: sp hybridized

Option B: sp2 hybridized

Option C: cp3 hybridized

Option D: dsp2 hybridized

Correct Answer: sp2 hybridized ✔

Option A: methanol

Option B: ethanal

Option C: propanal

Option D: hexanone

Correct Answer: hexanone ✔

Option A: ethanol and methanol

Option B: acetaldehyde and methanal

Option C: acetone and diethyl ketone

Option D: all of the above

Correct Answer: all of the above ✔

Option A: hydrogen ion

Option B: hydride ion

Option C: oxide ion

Option D: methoxide ion

Correct Answer: hydride ion ✔

Option A: formaldehyde

Option B: acetaldehyde

Option C: methane

Option D: acetone

Correct Answer: acetone ✔

Option A: proton

Option B: H+

Option C: both A & amp; B

Option D: H-

Correct Answer: H- ✔

Option A: Alcohol

Option B: Ketone

Option C: Both A & B

Option D: None of the above

Correct Answer: Both A & B ✔

Option A: Acid

Option B: Base

Option C: Both A and B

Option D: None

Correct Answer: Both A and B ✔

Option A: ketone

Option B: Aldehyde

Option C: Alkene then – COOH

Option D: Ester

Correct Answer: Aldehyde ✔

Option A: carbonic acid

Option B: ethanol

Option C: acetic acid

Option D: methanoic acid

Correct Answer: acetic acid ✔

Option A: HCHO

Option B: CH3CHO

Option C: CH3-CH2-CHO

Option D: None of the above

Correct Answer: CH3-CH2-CHO ✔

Option A: Nylon 66

Option B: urotropine

Option C: Aniline formaldehyde plastic

Option D: Bakelite

Correct Answer: Bakelite ✔

Option A: formation of phenolic resins

Option B: formation of mirror

Option C: antiseptic inhalant

Option D: formation of throat lozenges

Correct Answer: formation of throat lozenges ✔

Option A: in silvery mirror

Option B: in making medicine urotropine

Option C: in making throat lozenges

Option D: in making acetic acid

Correct Answer: in making acetic acid ✔

Option A: alkyl groups are electron donating

Option B: steric hindrance

Option C: Both A and B

Option D: none

Correct Answer: Both A and B ✔

Option A: formaldehyde

Option B: acetaldehyde

Option C: benzaldehyde

Option D: trimethyl acetaldehyde

Correct Answer: acetaldehyde ✔

Option A: CH3-CHO

Option B: CH3-CH-CH3

Option C: CH3-COOH

Option D: CH3-CO-CH2-CH3

Correct Answer: CH3-CHO ✔

Option A: acetaldehyde

Option B: ethyl alcohol

Option C: methyl alcohol

Option D: acetone

Correct Answer: ethyl alcohol ✔

Option A: reaction with HCN

Option B: reaction with NaHSO3

Option C: reaction with 2 4 dinitrophenyl hydrazine

Option D: reaction with Fehling solution

Correct Answer: reaction with Fehling solution ✔

Option A: formaldehyde

Option B: accetaldehyde

Option C: benzaldehyde

Option D: acetone

Correct Answer: acetone ✔

Option A: acetaldehyde

Option B: ethyl alcohol

Option C: methyl alcohol

Option D: acetone

Correct Answer: ethyl alcohol ✔

Option A: reaction with HCN

Option B: reaction with NaHSO3

Option C: reaction with 2 4 dinitrophenyl hydrazine

Option D: reaction with Fehling solution

Correct Answer: reaction with Fehling solution ✔

Option A: glumatic acid

Option B: lactic acid

Option C: aspartic acids

Option D: glycine

Correct Answer: lactic acid ✔

Option A: esterification

Option B: neutralization

Option C: hydrolysis

Option D: saponification

Correct Answer: esterification ✔

Option A: alkane

Option B: alcohols

Option C: aldehydes

Option D: ketones

Correct Answer: alkane ✔

Option A: formic acid

Option B: acetic acid

Option C: propionic acid

Option D: butyric acid

Correct Answer: butyric acid ✔