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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

Which alkyl halide out of the following may follow both SN1 and SN2 mechanism ?
A CH3-X
B (CH3)3 C-CH2 – X
C (CH3)2 CH – X
D (CH3)3 C – X
Correct Answer: (CH3)2 CH – X
The basic hydrolysis of ethyl acetate produces__________________?
A ethanol
B acetic acid
C ethanol and acetic acid
D ethanol and sodium acetate
Correct Answer: ethanol
Which one is not a nucleophile ?
A C2H5O-
B SCN-
C NH3
D H3C+
Correct Answer: H3C+
Which of the following is not a fatty acid ?
A Propanoic acid
B Acetic acid
C Phthalic acid
D Butanoic acid
Correct Answer: Phthalic acid
Which alkyl halide has the highest reactivity for a particular alkyl group ?
A R-F
B R-C
C R-Br
D R-I
Correct Answer: R-I
Essential amino acids are___________________?
A 5
B 10
C 15
D 20
Correct Answer: 10
50% inversion of configuration of molecules take place in a___________________?
A E1 – reaction
B E2 – reaction
C SN1 – reaction
D SN2 – reaction
Correct Answer: SN1 – reaction
Picric acid is_________________?
A monocarboxylc acid
B dicarboxylic acid
C aromatic carboxylic acid
D none of these
Correct Answer: none of these
The best method of preparation of alkyl halides is a reaction of alcohol with__________________?
A Zn / HCI
B SOCl2 / Pyridine
C PCI3
D PCI5
Correct Answer: SOCl2 / Pyridine
The complete reduction carboxylic acid results in the formation of________________?
A Alkyne
B Alkene
C Alkane
D Alcohol
Correct Answer: Alkane
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