Select the missing number?

Identify the diagram that best represents the relationship among the given classes.
Brain, Cerebrum, Liver, Human body

A piece of paper is folded and punched as shown in the diagram. Indicate how it will appear when it is opened?

Steam Engine was invented by?

Bacteria was discovered by

Which among the following is false about alpha particles?

Which among the following is not a characteristic of oxidation reaction?

Chandragiri Fort is a historical fort, built in the 11th century. It is located in ______.