MCQ-16
According to equation
4NH3 +502 —> 4NO+6H2O
How many grams of H2O is formed from a mixture of 51g of NH3 and 48g of oxygen
A. 32.4g
B. 81g
C. 27g
D. 54g

Answer: A

Conceptual Answer

MCQ-17
Value of 1 amu is equal to
A. 1.661×1027g
B. 1.661×1024g
C. 6.02×1023g
D. 1/6.02×1023g
Answer: D

Conceptual Answer

MCQ-18
Combustion analysis is used to determine
A. %age composition
B. Empirical formula
C. Molecular formula
D. All of these

Answer: D

Conceptual Answer

MCQ-19
How many moles of magnesium phosphate Mg3(PO4)2 will contain 0.25 moles of oxygen atoms
A. 1/16
B. 1/8
C. 1/48
D. 1/32

Answer: D

Conceptual Answer

MCQ-20
Avogadro’s number is the number of molecules present in
A. 1g molecules
B. 1 kg molecules
C. 1dm³ molecules
D. 1 Litre of molecules

Answer: A

Conceptual Answer

This Post Has 6 Comments

  1. Khadija ali

    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

      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

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

  3. Priyanka

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

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