Which of the following compounds contain(s) no covalent bond(s)?K

Subject

Chemistry

Class

JEE Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

1.

An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?

  • Base Acid End Point
    Strong  Strong Pink to colourless
  • Base Acid End Point
    Weak  Strong Colourless to pink
  • Base Acid End Point
    Strong  Strong Pinkish Red to Yellow
  • Base Acid End Point
    Weak Strong Yellow to Pinkish Red

2.

The predominant form of histamine present in human blood is (pKa, Histidine = 6.0)


3.

Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermic reaction?

  • A and D

  • A and B

  • B and C

  • C and D


4.

The combustion of benzene (l) gives CO2(g) and H2O(l). Given that heat of combustion of benzene at constant volume is –3263.9 kJ mol–1 at 250C; the heat of combustion (in kJ mol–1) of benzene at constant pressure will be (R = 8.314 JK–1 mol–1)

  • –3267.6

  • 4152.6

  • –452.46

  • 3260


Advertisement
5.

The ratio of mass percent of C and H of an organic compound (CXHYOZ) is 6: 1. If one molecule of the above compound (CXHYOZ) contains half as much oxygen as required to burn one molecule of compound CXHY completely to CO2 and H2O. The empirical formula of compound CXHYOZ is

  • C2H4O3

  • C3H6O3

  • C2H4O

  • C3H4O2


6.

Which of the following are Lewis acids?

  • BCl3 and AlCl3

  • PH3 and BCl3

  • AlCl3 and SiCl4

  • PH3 and SiCl4


7.

According to molecular orbital theory, which of the following will not be a viable molecule?

  • H22-

  • He22+

  • He2+

  • H2-


Advertisement

8.

Which of the following compounds contain(s) no covalent bond(s)?
KCl, PH3, O2, B2H6, H2SO4

  • KCl, B2H6

  • KCl, B2H6, PH3

  • KCl, H2SO4

  • KCl


D.

KCl

KCl is an ionic compound. 

PH3, O2, B2H6, H2SOcovalent compound.


Advertisement
Advertisement
9.

Total number of lone pair of electrons in  I3ion is

  • 12

  • 3

  • 6

  • 9


10.

Hydrogen peroxide oxidises Fe(CN)6]4- to [Fe(CN)6]3- in acidic medium but reduces [Fe(CN)6]3- to [Fe(CN)6]4- in alkaline medium. The other products formed are, respectively

  • H2O and (H2O + OH-)

  • (H2O + O2) and H2O

  • (H2O + O2) and (H2O + OH-)

  • H2O and (H2O + O2)


Advertisement