You spill a bucket of soapy water on a marble floor accidently.Would it make it easier or more difficult for you to walk on the floor ? Why ?

You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.

While constructing a house ,a builder selects marble flooring and marble table tops for the kitchen where vinegar and juice of lemon, tamarind etc. Are more often used for cooking. Will you agree to this selection and why?

Name the forces acting on a plastic bucket containing water held above ground level in you hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.

Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to fool it. Should you add ice to the lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?

(a) What is the action of litmus on: (i) Dry ammonia gas (ii) Solution of ammonia gas in water (b) State the observations you would make on adding sodium hydroxide to aqueous solution of : (i) Ferrous sulphate (ii) Aluminium chloride Give balanced chemical equations.