Trying to find the right answer to this..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Chemistry in Everyday Life

Short Answer Type

11.

Name a substance which can be used as an antiseptic as well as disinfectant.

149 Views

12.

What are the main constitutents of dettol?

135 Views

13.

What is tincture of iodine? What is its use?

268 Views

14.

What are food preservatives?

151 Views

15.

Name the sweetening agent used in the preparation of sweet for a diabetic patient.

264 Views

16.

Why should not medicines be taken without consulting doctors?

298 Views

17.

Explain why sweetener is predicted to become great commercial success.

193 Views

18.
If water contains dissolved calcium bicarbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes?

Calcium hydrogen carbonate present in water will furnish Ca²⁺ ions which cause hardness in water.
calcium ion form insoluble calcium soaps respectively when sodium potassium soaps are dissolved in hard water.

2C₁₇H₃₅COONa --> 2NaCl + (C₁₇H₃₅COO)₂Ca
^{Soap insoluble calcium stearate}

Therefore, soaps cannot be used to clean clothes with such water.

199 Views