Have you observed the rare view mirrors of a car ?

Have you ever observed the duration of anger ?

What variations generally have you observed in the species of cow?

What variations generally have you observed in the species of cow?

Have you observed the colour of a cloud before its rain?

Revanth blew air from his mouth onto the mirror while he was getting ready to go to school. He observed that the image in the mirror was not clear. Why do you think it has become so?

How can you observe Algae?

Have you observed material used to make school bell or bells in temple?

Have you observed any change when lime water is added to turmeric ?