Question

Injection needles, polythene cover,dried leaves and mobile batteries.Which one is odd one out and what's it's reason

Answer 1

The odd one is dried leaves.

• There are four substances mentioned in the question,which are :

- Injection needles.

- Polythene cover.

- Dried leaves.

- Mobile batteries.

• Among,the above mentioned three substances the first,second and fourth substances are completely inorganic substances which means these three substances are made out of inorganic materials.

•On the other hand, the third substance or the dried leaves are organic substances.

That's why this is the odd one in this question.

Answer 2

The correct answer is dried leaves.

Explanation:

• Dried leaves are biotic components, that is, they are derived from living organisms. They are bio-degradable, that is, degraded by living organisms. They help in increasing soil fertility by adding nutritious carbon and other mineral components to the soil, thereby forming the Humus.
• Injection needle, polyethylene cover, mobile batteries are all abiotic components and non-biodegradable and are responsible for polluting the environment. They add toxic substances to the soil.