ICSE CHEMISTRY class 10 CHEMICAL BONDING - 4

ICSE CHEMISTRY CLASS 10 CHEMICAL BONDING - 4

Give reasons

1.      Electrovalent compounds are soluble in water but not in organic solvents.

2.      Electrovalent compounds undergo high speed reactions where as covalent compounds undergo slow reactions.

3.      CCl₄ does not conduct electricity.

4.      Covalent compounds exist as liquids, gases or soft solids.

Choose the correct answer.

1.      Which of the following does not favour formation of ionic bond:

A)    Lower I.P value of metallic atom

B)    Higher E.A value of non-metallic atom

C)    Lower E.A value of non-metallic atom

D)    Larger electronegativity difference between the combining atoms

2.      A compound ‘X’ consists of molecules only then the nature of the bonding in ‘X’ is:

3.      Which of the following is not a property of electrovalent compounds:

A)    High B.P and M.P

B)    Non conductors of electricity in their fused state

C)    Non volatile

D)    Crystalline solids

4.      The compound which is composed of three types of bonding:

5.      Metal loses electron/s to form cation/s. It is called ________

6.      Which one among the following is a polar covalent molecule?

A)    Water

B)    Methane

C)    CCl₄

D)    Chlorine

7.      Which of the following is not an electrovalent compound?

A)    NaCl

B)    MgO

C)    CCl₄

D)    CaCl₂

8.      Methane is a/an _____________ compound.

9.      Which of the following involves coordinate covalent bonding?

A)    Ammonia

B)    Calcium oxide

C)    Ammonium chloride

D)    Water

10.  Which of the following can be electrolyzed ?

A) H₂O         B) NaCl sol.    C) Solid MgCl₂           D) CCl₄