Maharashtra Board Solutions for Chapter: Materials we Use, Exercise 6: Exercise
Maharashtra Board Science Solutions for Exercise - Maharashtra Board Solutions for Chapter: Materials we Use, Exercise 6: Exercise
Attempt the practice questions on Chapter 15: Materials we Use, Exercise 6: Exercise with hints and solutions to strengthen your understanding. General Science Standard Seven solutions are prepared by Experienced Embibe Experts.
Questions from Maharashtra Board Solutions for Chapter: Materials we Use, Exercise 6: Exercise with Hints & Solutions
Fill appropriate terms in the blanks.
(white cement, soap, detergent, wearing of bones, tooth decay, hard, soft, Portland, fatty acid)
The substance that helps water to remove dirt from the surface of materials is called _____.
Fill appropriate terms in the blanks. (white cement, soap, detergent, tooth decay, hard, soft, Portland, fatty acid)
Fluoride is used in toothpaste to prevent _____.
Fill appropriate term in the blank.
| White cement | soap | detergent | wearing of bones | tooth decay | hard | soft | Portland | fatty acid |
Soap is a salt of _____ and sodium hydroxide.
Fill appropriate term in the blank.
(white cement, soap, detergent, wearing of bones, tooth decay, hard, soft, Portland, fatty acid)
Synthetic detergents can be used in _____ water as well.
Fill appropriate term in the blank.
(white cement, soap, detergent, wearing of bones, tooth decay, hard, soft, Portland, fatty acid)
For construction purposes _____ cement is the most commonly used cement.
Explain why –
Synthetic detergents are superior to soap.
Explain why –
Often coloured spots are formed on clothes during washing.
Explain why –
Tobacco masheri should not be used for cleaning teeth.
