Chemistry (School & UG)

Q. What is the principal quantum number for the outermost electrons in a chlorine atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in a potassium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in a sodium atom?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number for the outermost electrons in potassium (K)?
  • A. 3
  • B. 4
  • C. 5
  • D. 2
Q. What is the principal quantum number for the outermost electrons in sodium (Na)?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the principal quantum number of the outermost electrons in a chlorine atom?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. What is the principle behind electrophoresis in qualitative analysis?
  • A. Separation based on boiling point
  • B. Separation based on charge and size
  • C. Separation based on solubility
  • D. Separation based on density
Q. What is the principle behind quantum mechanics in chemistry?
  • A. Particles have wave-like properties
  • B. Energy is quantized
  • C. Both A and B
  • D. None of the above
Q. What is the principle behind the use of chromatography for qualitative analysis?
  • A. Separation based on charge
  • B. Separation based on size
  • C. Separation based on solubility
  • D. Separation based on boiling point
Q. What is the principle behind using UV-Vis spectroscopy for qualitative analysis?
  • A. It measures the mass of ions
  • B. It detects the color of the solution
  • C. It identifies functional groups based on absorbance
  • D. It separates ions based on charge
Q. What is the product of the complete combustion of 2-butyne?
  • A. C4H10 + CO2 + H2O
  • B. C4H10 + CO + H2O
  • C. CO2 + H2O
  • D. C4H8 + O2
Q. What is the product of the complete combustion of ethyne (acetylene)?
  • A. CO2 and H2O
  • B. C and H2O
  • C. CO and H2O
  • D. C2H4
Q. What is the product of the complete combustion of ethyne (C2H2)?
  • A. C2H4 + H2O
  • B. CO2 + H2O
  • C. C2H6 + O2
  • D. C2H2 + O2
Q. What is the product of the dehydration of an alcohol?
  • A. Alkene
  • B. Alkane
  • C. Ether
  • D. Aldehyde
Q. What is the product of the E1 elimination of 2-bromo-2-methylpropane?
  • A. Isobutylene
  • B. Butane
  • C. 2-methylpropene
  • D. Cyclobutane
Q. What is the product of the E2 elimination of 2-bromobutane?
  • A. Butene
  • B. 2-butene
  • C. 1-butene
  • D. Butyne
Q. What is the product of the electrophilic substitution of toluene with sulfuric acid?
  • A. Toluene sulfonic acid
  • B. Benzene sulfonic acid
  • C. Methyl sulfonic acid
  • D. Phenol
Q. What is the product of the elimination reaction of 2-bromobutane with KOH in ethanol?
  • A. But-1-ene
  • B. But-2-ene
  • C. But-3-ene
  • D. Butane
Q. What is the product of the Friedel-Crafts acylation of benzene with acetyl chloride?
  • A. Acetophenone
  • B. Benzophenone
  • C. Benzyl acetate
  • D. Phenyl acetate
Q. What is the product of the Friedel-Crafts acylation of benzene with acetyl chloride (CH3COCl)?
  • A. Acetophenone
  • B. Benzophenone
  • C. Benzyl acetate
  • D. Phenyl acetate
Q. What is the product of the Friedel-Crafts acylation of benzene with acetyl chloride (CH3COCl) in the presence of AlCl3?
  • A. Acetophenone
  • B. Benzophenone
  • C. Benzyl acetate
  • D. Phenyl acetate
Q. What is the product of the Friedel-Crafts acylation of benzene with acetyl chloride in the presence of AlCl3?
  • A. Acetophenone
  • B. Benzophenone
  • C. Benzyl acetate
  • D. Phenyl acetate
Q. What is the product of the Friedel-Crafts alkylation of benzene with 1-bromopropane in the presence of AlCl3?
  • A. Propylbenzene
  • B. Isopropylbenzene
  • C. Benzyl bromide
  • D. Benzene
Q. What is the product of the hydrogenation of 1-hexene?
  • A. Hexane
  • B. Cyclohexane
  • C. 1-hexanol
  • D. 2-hexanol
Q. What is the product of the hydrogenation of 2-pentyne?
  • A. pentane
  • B. 2-pentene
  • C. 1-pentene
  • D. 3-pentene
Q. What is the product of the hydrolysis of an amide?
  • A. Carboxylic acid and amine
  • B. Alcohol and acid
  • C. Alkene and water
  • D. Ketone and ammonia
Q. What is the product of the hydrolysis of an ester?
  • A. Alcohol and carboxylic acid
  • B. Alkene and water
  • C. Ketone and hydrogen
  • D. Aldehyde and carbon dioxide
Q. What is the product of the hydrolysis of chlorobenzene?
  • A. Phenol
  • B. Benzene
  • C. Chlorobenzene
  • D. Benzyl alcohol
Q. What is the product of the reaction between 1-butyne and H2 in the presence of a catalyst?
  • A. 1-butene
  • B. 2-butene
  • C. Butane
  • D. Cyclobutane
Q. What is the product of the reaction between 1-pentene and HBr?
  • A. 1-bromopentane
  • B. 2-bromopentane
  • C. 3-bromopentane
  • D. 4-bromopentane
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