Q. What is the chemical formula of (a) baking soda, and (b) washing soda?

Q. Define one “Coulomb” on the basis of Coulomb’s law.

Q. Graphite is a non – metal. But still it conducts electricity. Explain.

Q. Weaving of fabric is done on …….

Q. What is ‘a hemlock tree’? Why doesn’t the poet write about a more ‘beautiful’ tree such as maple, an oak, or a pine?

Q. Write the general characteristics of dyes.

Q. Describe the regional variations in the climatic conditions of India with the help of suitable examples.

Q. Why did the captain send the men to the land?

Q. Define turbulent flow.

Q. How do they replace the necklace?