Sample Qustion Paper for class 10

 1. Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of 

Potassium Iodide solution to it. What would she observe?

A. The solution turned red. 

B. Yellow precipitate was formed.

C. White precipitate was formed.

D. The reaction mixture became hot.

Answer : B. Yellow precipitate is formed

2. Identify gas A in the following experiment.

A. Nitrogen

B. Hydrogen

C. Oxygen

D. Carbon dioxide

Answer : B. Hydrogen