Question

Q.1 (A) Multiple Choice Questions
(5)
1.According to Mendeleev's periodic law,properties of elements are periodic functions of the ir ---
d. Boiling point
c. Density
a. Atomic number
b. Atomic mass

2.--- is the least reactive metal
a. Gold
b. Silver
d. Sodium
c. Copper

3 To prevent rustng; a layer of --
metal is applied on iron sheets.
c. Copper
b. Lead
d. Potassium
a. Zinc

4.An alloy of mercury is known as ----
a. Sulphide
b. Amalgam
c. Cinnabar
d. Caustic Soda

5.The reaction in which heat is absorbed is called
d. Active
b. Exothermic
a. Endothermic
c. Redox
​

Answer 1

Answer:

1. A -Part
2. C -Part
3. A -Part
4. B -part
5. D -Part.......