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Q1. Functional group of Butanone
Answer: Ketone
Description:
Butanone is an organic compound that contains a carbon-oxygen double bond (C=O) within its carbon chain. This group is present on a middle carbon atom, not at the end. When the carbonyl group is located in the middle of the chain, the compound is classified as a ketone. Therefore, Butanone belongs to the ketone group.
Q2. Female germ cells are produced in
Answer: Ovary
Description:
In the female body, reproductive cells known as ova (egg cells) are formed in the ovary. The ovary is an important part of the female reproductive system. It not only produces egg cells but also releases hormones that help in growth and reproductive functions.
Q3. Reaction of dilute HCl with iron filings
Answer: Hydrogen gas and Iron chloride are produced
Description:
When iron reacts with dilute hydrochloric acid, it replaces hydrogen from the acid. As a result, iron chloride and hydrogen gas are formed. The hydrogen gas can be observed as bubbles during the reaction. This is an example of a metal reacting with an acid.
Q4. Image formation in human eye
Answer: Retina
Description:
In the human eye, the image of an object is formed on the retina. The retina is a light-sensitive layer present at the back of the eye. It receives light and converts it into signals, which are then sent to the brain for interpretation.
Q5. Artificial ecosystem example
Answer: Crop field
Description:
An artificial ecosystem is one that is created and maintained by humans. A crop field is a good example because it requires human care such as watering, use of fertilizers, and protection. It does not function naturally without human involvement.