Chemistry - 9 Chapter - 4Periodicity of Elements and Periodic TableTest - 24

Chemistry - 9 Chapter - 4
Periodicity of Elements and Periodic Table
Test - 24

1. Define transition elements?

a) Elements having complete penultimate(next inner to outer most) electronic shell.ms
b) Elements having incomplete penultimate(next inner to outer most) electronic shell.
c) Elements having complete penultimate(inner to outer most) electronic shell.
d) Elements having incomplete penultimate(next inner to outer most) electronic shell.

2. f-block elements are outer transition elements.

a) False
b) True

3. How electrons are added in the transition elements of fifth and sixth periods?

a) Electrons are abruptly added in 4d and 5d orbital respectively.
b) Electrons are gradually added in 4d and 5d orbital respectively.
c) Electrons are simultaniously added in 4d and 5d orbital respectively.

4. Hydrogen gas is passed through hot vegetable oil to make Banaspatti ghee.

a) True
b) False

5. Nickel (Ni) is used as a catalyst in reaction between Hydrogen gas passed through hot vegetable oil to make banaspatti ghee.

a) False
b) True

6. Physical properties of elements depend upon outer shell configuration.

a) True
b) False

7. Presence of compounds of iron, cobalt and copper will give _____ Colour of hairs.

a) Black
b) Ginger
c) Brown
d) Red

8. Presence of compounds of molybdenum (Mo) will give _____ Colour to hairs.

a) Brown
b) Black
c) Red
d) Ginger

9. Presence of compounds of titanium will give _____ Colour to hairs.

a) Black
b) Brown
c) Red
d) Ginger

10. S², P³ configuration in outer most shell means?

a) Three electrons
b) Five electrons
c) Two electrons
d) Four electrons

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