A. Methanal
B. Ethanal
C. Propanal
D. Hexanone
✅ The correct answer is option D.
Chemistry MCQs
The diameter of an atom is in the order of
A. 0.2m
B. 0.2mm
C. 0.2nm
D. 0.2pm
✅ The correct answer is option C.
Which of the following is true in the case of the Zn-Cu cell?
A. The flow of electrons takes place from copper to zinc
B. E0red of the copper electrode is less than that of a zinc electrode
C. Zinc acts as an anode and copper as a cathode
D. All are correct
✅ The correct answer is option C.
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
✅ The correct answer is option D.
Which of the following are isoelectronic species?
A. H+ HH-
B. Li+ Na+ K+
C. C1- Br- I
D. F- Ne Na+
✅ The correct answer is option D.
In a galvanic cell
A. Chemical energy is converted into electricity
B. Chemical energy is converted into heat
C. Electrical energy is converted into chemical energy
D. Electrical energy is converted into heat
✅ The correct answer is option A.
The carbon atom of the carbonyl group is
A. Sp hybridized
B. Sp2 hybridized
C. Cp3 hybridized
D. Dsp2 hybridized
✅ The correct answer is option B.
The mass spectrometer is used to determine the Mass number of isotopes and
A. Atomic number
B. Relative abundance
C. Electronic configuration
D. All of the above
✅ The correct answer is option B.
The degree of dissociation of week electrolyte increases as
A. Pressure Increases
B. Dilution decreases
C. Dilution increases
D. None
✅ The correct answer is option C.
Which of the following substances does not give iodoform test?
A. Acetaldehyde
B. Ethyl alcohol
C. Methyl alcohol
D. Acetone
✅ The correct answer is option C.