Q. Draw up a list of the different festivals celebrated in your locality. Which of these celebrations are shared by members of different regional and religious communities?
Q. Compare the solubility and thermal stability of alkali metals carbonates with those of the alkaline earth metals nitrates.
Q. Name the types of components of habitat and how they interact with each other to support life. Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (5 marks)
Q. Why is LiF almost insoluble in water whereas LiCl is soluble not only in water but also in acetone?
Q. A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or not? Justify your answer.
