MCQs of Chapter # 07 [Solution and Suspension] Class IX

 

Chemistry IX

MCQs [Chapter# 07]

 

i.                    Foam/ froth is:

a.       Suspension of droplets of one liquid into another

b.     Suspension of gas in liquid

c.       Suspension of fine particles of soil in liquid

d.      Suspension of particles of carbon in air

 

ii.                 It is usually lesser in quantity:

a.      Solute

b.      Solvent

c.       Solution

d.      Suspension

 

iii.               Solubility is:

a.       Strength of solute

b.      Strength of solvent

c.      Strength of solution

d.      Strength of suspension

 

iv.                Solubility of solid and liquid:

a.       Increase with increase in pressure

b.      Increase with decrease in pressure

c.       Decrease with increase in pressure

d.     No change

 

v.                  The solution in which solute has less quantity than solvent is:

a.       Saturated solution

b.     Unsaturated solution

c.       Super saturated solution

d.      All of the above

 

vi.                Which of the following(s) is/are the characteristic(s) of Crystalline solid?

a.       Sharp melting point

b.      Regular and definite shape

c.       Contain water of crystallization

d.     All of the above

 

vii.             The breakdown of water is:

a.      Hydrolysis

b.      Hydration

c.       Hydrogenation

d.      Dehydrogenation

 

viii.           Number of solutes dissolve in 1000 gm of solvent is:

a.       Molarity

b.     Molality

c.       Normality

d.      Mole fraction

 

ix.                The value of mole fraction is always:

a.       Less than1

b.      Greater than 1

c.      Equals to 1

d.      Always 0

 

x.                  The particular mass of solute dissolves in definite volume of solvent:

a.      Mass by mass percentage concentration

b.      Mass by volume percentage concentration

c.      Volume by mass percentage concentration

d.      Volume by volume percentage concentration

MCQs of Chapter # 06 [Matter] Class IX

 

Chemistry IX

MCQs [Chapter# 06]

 

i.                    According to Kinetic molecular theory, the movement of particles increases with:

a.      Increase in temperature

b.      Decrease in temperature

c.       Increase in pressure

d.      Decrease in pressure

 

ii.                 It does not have particular shape:

a.       Solid

b.     Liquid

c.       Gas

d.      Plasma

 

iii.               They have strongest intermolecular forces:

a.      Solid

b.      Liquid

c.       Gas

d.      Plasma

 

iv.                They have highest intermolecular spaces:

a.       Solid

b.     Liquid

c.       Gas

d.      Plasma

 

v.                  Rate of diffusion of gas is inversely proportional to the:

a.      Square root of its density

b.      Square root of its mass only

c.       Cubic root of its density

d.      Cubic root of its mass only

 

vi.                The diffusion of hydrogen gas is:

a.       2 times faster than oxygen gas

b.      3 times faster than oxygen gas

c.      4 times faster than oxygen gas

d.      5 times faster than oxygen gas

 

vii.             Boiling point of water is:

a.       -4⁰C

b.      0⁰C

c.       50⁰C

d.     100⁰C

 

viii.           Camphor, dry ice, iodine are the examples of:

a.      Sublimation

b.      Evaporation

c.       Vaporization

d.      All of the above

 

ix.                The escape of liquid from the surface of the liquid is:

a.      Evaporation

b.      Sublimation

c.       Boiling point

d.      Fusion

 

x.                  The melting point of water is:

a.       -4⁰C

b.     0⁰C

c.       50⁰C

d.      100⁰C

MCQs of Chapter # 05 [Chemical bonding] Class IX

 

Chemistry IX

MCQs [Chapter# 05]

i.                    Ionic bond is formed by:

a.       Mutual sharing of electron

b.      Side sharing of electron

c.       Complete sharing of electron

d.     None of the above

 

ii.                 Sodium loses electron to form NaCl:

a.      1 electron

b.      2 electron

c.       3 electron

d.      7 electron

 

iii.               Ionic compounds have:

a.      High melting and high boiling point

b.      Low melting and low boiling point

c.       High melting and low boiling point

d.      Low melting and high boiling point

 

iv.                Carbon has valence:

a.       1

b.      2

c.       3

d.     4

 

v.                  Covalent bond is formed by:

a.       Single  sharing of electron

b.      Double  sharing of electron

c.       Triple sharing of electron

d.     All of the above

 

vi.                Double covalent bond represents by:

a.       One short line

b.     Two short line

c.       Three short line

d.      Arrow

 

vii.             Polar covalent bond is formed when electronegative value is up to:

a.       1.0

b.      1.3

c.       1.5

d.     1.7

 

viii.           Arrow is used to represent:

a.       Ionic bond

b.      Covalent bond

c.      Coordinate covalent bond

d.      All of the above

 

ix.                NH₄Cl is an example of:

a.       Ionic bond

b.      Covalent bond

c.      Coordinate covalent bond

d.      All of the above

 

x.                  The best example of Hydrogen bond is:

a.       HF

b.      HCl

c.      H₂O

d.      All of the above

 

xi.                CO₂ is an example of:

a.       Ionic bond

b.     Covalent bond

c.       Coordinate covalent bond

d.      None of these

 

xii.             Following are the characteristics of covalent bond except:

a.       They are insulators

b.     They have high melting and boiling point

c.       They are non-electrolytes

d.      They are volatile