1st Year Chemistry | Basic Concepts | Quiz Part-1

Dear Students!

• This quiz is from Chemistry FSc Part-I / 1st Year, Chapter No.1: Basic Concepts.
• We tried our best to make/choose maximum Multiple Choice Questions (MCQs) in this chapter.
• Improve yourself by attempting all quizzes of 11th Class (Chemistry). 
• This quiz is the Part-I of this chapter.

NOTE: 

The remaining MCQs of this chapter will be uploaded soon Insha Allah.

Attempt Short Questions and Answer (Chapter No.1: Basic Concepts) 

Chapter No.1: Basic Concepts | Quiz Part-I

 

1. Isotopes differ in:
   1.   Properties which depend upon mass
   2.   Arrangement of electrons in orbitals
   3.   Chemical properties
   4.   The extent to which they may be affected in electromagnetic field
2. The mass of one mole of electron is:
   1.   1.008 mg
   2.   0.55 mg
   3.   0.184 mg
   4.   1.673 mg
3. The mass of Aluminium in 51 g of \(Al_{2}O_{3}\) is:
   1.   13 g
   2.   27 g
   3.   54 g
   4.   108 g
4. The radius of atoms are in the range:
   1.   1 \(A^{o}\)
   2.   2 \(A^{o}\)
   3.   3 \(A^{o}\)
   4.   4 \(A^{o}\)
5. Number of atoms present in 1 mole of NaOH:
   1.   \(6.02\times10^{23}\) atoms/mole
   2.   \(2\times6.02\times10^{23}\) atoms/mole
   3.   \(3\times6.02\times10^{23}\) atoms/mole
   4.   None of these
6. Number of moles of water present in 90 g of water are:
   1.   2
   2.   3
   3.   4
   4.   5
7. When we compare one mole each of \(O_{2}\) and \(H_{2}\), then we observe:
   1.   same no. of molecules
   2.   \(O_{2}\) has greater no. of molecules than \(N_{2}\)
   3.   \(N_{2}\) has greater no. of molecules than \(O_{2}\)
   4.   None of these
8. Silver has number of isotopes:
   1.   2
   2.   4
   3.   8
   4.   16
9. Which one is a molecular ion?
   1.   \(F^{-1}\)
   2.   \(NH_4^{+1}\)
   3.   \(Fe^{+3}\)
   4.   \(N_2^{+2}\)
10. Which of the following is approximately 3400 times lighter than haemoglobin molecule?
    1.   \(_4 He\)
    2.   \(_{20}Ne\)
    3.   \(_{40}Ca\)
    4.   \(_{12}Mg\)
11. Which one is the empirical formula of a compound?
    1.   \(B_{2}H_{6}\)
    2.   \(Hg_{2}Cl_{2}\)
    3.   \(Al_{2}Cl_{6}\)
    4.   \(HgCl_{2}\)
12. Tin (element) has number of isotopes:
    1.   5
    2.   7
    3.   9
    4.   11
13. Gold has number of isotopes:
    1.   1
    2.   3
    3.   6
    4.   9
14. In a mass spectrum, the height of peak explains:
    1.   relative abundance of isotopes
    2.   atomic number
    3.   number of isotopes
    4.   number of electrons
15. Mass spectrometer separates different positive isotopic ions on the basis of their:
    1.   e/m value
    2.   m/e value
    3.   charge value
    4.   mass value