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To protect tooth decay we are advised to...

To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is

A

Acidic

B

Neutral

C

Basic

D

Baking soda

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It is very commonly thought that the sciences and humanities are producing two cultures which are opposed to each other. Science is even accused of not being sympathetic to the well-being of society. All this is due to the debatable use made by some scientists of their discoveries. However, science has now become increasingly aware of its responsibility towards society. Consequently, many scientists are of the opinion that science should be defined in humanistic terms. According, I.I. Rabi defines science as follows : "Science is an adventure of the whole human race to learn to live in and perhaps to love the universe in which they are. To be a part of it is to understand it, to understand oneself, to begin to feel that there is a capacity within man far beyond that he felt he had, of an infinite extension of human possibilities - not just on the material side..." Rabi proposes that science be taught “with a certain historical understanding, with a certain philosophical understanding, with a social understanding and a human understanding". At the moment, we are dealing with physics and one might well ask if we can define physics also in humanistic terms. Gerald Halton provides us with a relevant definition of physics. According to him : "Physics is a sequence of related ideas whose pursuit provides one with the cumulative effect of an even higher vantage point and a more encompassing view of the working of nature. Physics is neither an isolated bloodless body of facts and theories with mere vocational usefulness, nor a glorious entertainment restricted to an elite of specalists. Rather students of physics may leave them unprepared for their own time. They can be neither participants nor even intelligent spectators in one of the great adventures”. It will be no exaggeration if we say that the fate of society is linked to physics as whatever is thought or discovered in physics immediately affects the society. Our intellegence lies in applying physics to solve the pressing problems that the society faces and not to annihilate it. According to I.I Rabi

To protect our environment we should use ____ instead of polythene bags.

(A) Anionic detergents are used in tooth pastes. (R) In anionic detergents, the anionic part of the molecule is involved in the cleansing action.

Do metals exist in nature in the same form as that we use in our daily life?

VGS PUBLICATION-BRILLIANT-ACIDS AND BASES-EXERCISE
  1. Test the nature of lemon juice and milk sample with the help of natura...

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  2. How do you feel about nature? It is a big natural laboratory that cont...

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  3. To protect tooth decay we are advised to brush our teeth regularly. Th...

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  4. Which of the following is acidic in nature?

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  5. Why are industrial wastes neutralised before releasing into water?

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  6. Write the names of food substances that you know in the appropriate co...

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  7. Take solutions of some juices of fruits, vegetables, cold drinks and v...

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  8. How are hydroxides prepared ? What is their nature ?

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  9. Classify the substances given in the table into the fallowing categori...

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  10. When do you get a neutral solution from acids and bases?

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  11. How are salts produced,? Give an example.

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  12. Describe the uses of Acids, Bases and Salts.

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  13. Which are called chemical Indicators ?

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  14. What are indicators ? How are they useful ?

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  15. Are there any acids apart from natural acids ? What are they ?

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  16. You might have touched soap water or lime water. How do you feel ? Wha...

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  17. Who discovered Hydrogen? What is its colour?

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  18. Write the properties of acids and bases from your observations with th...

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  19. Are all neutral solutions salts? Give example.

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  20. How do you draw a red flower using indicators to get the desired colou...

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