Hydrogen is collected in the laboratory by upward displacement of water.(True / False)

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The statement asks whether hydrogen is collected in the laboratory by upward displacement of water.

2. **Density of Hydrogen**: Hydrogen is less dense than water. This means that when hydrogen gas is produced, it will rise above the water surface.

3. **Method of Collection**: In laboratory settings, gases that are less dense than water, like hydrogen, are typically collected using the method of downward displacement of water. This involves inverting a container over a water source, allowing the hydrogen gas to rise and displace the water downwards.

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