**Step-by-Step Solution:**
1. **Identify the substances:** The question mentions Ganja and LSD. Ganja is commonly known as marijuana, and LSD is a well-known hallucinogenic drug.
2. **Understand their effects:** Both Ganja and LSD primarily affect the mind. They can alter perception, mood, and cognitive processes.
3. **Recognize the specific effects:** The effects of these substances include changes in hearing and visual perception, which are significant indicators of how they influence mental processes.
4. **Classify the substances:** Given that both Ganja and LSD alter perception and can lead to hallucinations, they fall under a specific category of drugs.
5. **Define the classification:** Substances that affect perception, mood, and cognitive functions, particularly leading to hallucinations, are classified as Hallucinogens.
6. **Select the correct answer:** Based on the classification, the correct answer to the question is that Ganja and LSD are classified as Hallucinogens.
**Final Answer:** Ganja and LSD are classified as Hallucinogens.
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