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Chemistry 1488 MCQs [All-Courses]

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

All Topics  1488

The given dissociation constant (Ka) value 1.3×10-10 is of_________________?
A Alcohol
B Acetic acid
C Water
D Phenol
Correct Answer: Phenol
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
Correct Answer: acetic acid
The distinction test for primary secondary and tertiary alcohol required to react each of them is_________________?
A Cone. HCI and anhydrous SOCl2
B Cone. HCI and anhydrous CaCl2
C Cone. HCI and anhydrous PCl2
D Cone. HCI and anhydrous ZnCl2
Correct Answer: Cone. HCI and anhydrous ZnCl2
Which of the following will not give addition reaction with NaHSO3________________?
A HCHO
B CH3CHO
C CH3-CH2-CHO
D None of the above
Correct Answer: CH3-CH2-CHO
The oxidation of isopropyl alcohol will yield___________________?
A propane
B Propanol
C Propanone
D Propanoic acid
Correct Answer: Propanone
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
A Nylon 66
B urotropine
C Aniline formaldehyde plastic
D Bakelite
Correct Answer: Bakelite
The rectified spirit contains________________?
A 12% alcohol
B 90% alcohol
C 95% alcohol
D 100% alcohol
Correct Answer: 95% alcohol
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
Correct Answer: formation of throat lozenges
The formula of starch is__________________?
A C12H22O11
B C6H10O5
C (C6H10O5)n
D C6H12O6
Correct Answer: C6H10O5
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
Correct Answer: in making acetic acid
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