Entry Test (NMDCAT & ECAT) Preparation for FSc students to get admission to Medical colleges and Engineering Universities

MCQ-46
The empirical formula of organic compound is CH2O and molecular mass is 60g/mol. What is the molecular formula?
A. C6H12O6
B. CH3-CH3
C. CH3COOH
D. C2H6O

Answer: C

Conceptual Answer

MCQ-47
56g of Fe reacts with 24g of oxygen to produce Fe2O3. Which one is limiting reactant
A. Fe
B. 02
C. Fe2O3
D. Both are consumed completely

Answer: D

Conceptual Answer

MCQ-48
The largest number of molecules are present in
A. 3.6g of H2O
B. 4.8g of C2H5OH
C. 2.8g of CO
D. 5.4g N2O5

Answer: A

Conceptual Answer

MCQ-49
The mass of one carbon atom is
A. 12amu
B. 12/NA
C. 2×10-23g
D. All of these

Answer: D

Conceptual Answer

MCQ-50
Number of electrons in 1.6g of methane
A. NA / 2
B. NA
C. 12NA
D. NA/5

Answer: B

Conceptual Answer
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This Post Has 6 Comments

  1. Khadija ali August 12, 2022 Reply

    Amazing sir g…i need these mcqs in pdf plzz …. please share me in email these all mcqs of chemistry from fsc to BS PLZZZ SIR plzz

    1. Umair Ali khan August 18, 2022 Reply

      These MCQs are not available in pdf. Material is taken from different sources, students requested or from past papers and put on the website randomly without writing in pdf.

  2. M bialal September 5, 2022 Reply

    sir where are the lectures mcqs of other chapters of pmc chemistry explanation ?

  3. Priyanka November 6, 2022 Reply

    Sir I am unable to find notes I want notes for macromolecules

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