Among the following, the false statement is :

Options

A. It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane
B. Lyophilic sol can be coagulated by adding an electrolyte
C. Latex is a colloidal solution of rubber particles which are positively charged
D. Tyndall effect can be used to distinguish between a colloidal solution and a true solution

Explanation

To determine the false statement among the given options, we will analyze each statement step by step.

### Step 1: Analyze the first statement
**Statement:** It is possible to cause artificial rain by throwing electrified sand carrying a charge opposite to the one on the clouds.

**Analysis:** This statement is true. Clouds contain charged water droplets, and introducing particles with an opposite charge can neutralize the charge on the droplets, allowing them to coalesce and form larger droplets, which can lead to rain.

### Step 2: Analyze the second statement
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