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प्रश्न
Which of the following materials is not lustrous?
पर्याय
Gold
Silver
Wood
Diamond
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उत्तर
Wood
Explanation:
Wood is not a crystalline substance and has no lusture.
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संबंधित प्रश्न
Gold and diamond are the examples of _________ materials.
Look at the pictures and identify the materials by which they are made of:
(paper, clay, glass, wood, plastic, metal rubber, wax
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| ____________ | ____________ | ____________ | ___________ | _____________ |
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| ____________ | ____________ | ____________ | ____________ | ____________ |
Sand paper is a good example for smooth materials.
Chalk dissolves in water.
Vinegar dissolves in water.
Choose the odd one:
Soft material ______.
Which among the following is an example of dull material?
Match the substances in Column A with their applications given in Column B.
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Column A |
Column B |
| (a) oxygen | (i) for making crackers |
| (b) copper | (ii) for disinfecting water |
| (c) sulphur | (iii) all living beings inhale during breathing |
| (d) iron | (iv) for making electric wires |
| (e) chlorine | (v) for making rails |
Fill in the blanks to complete the following paragraph.
The name of the product formed in the reaction of sulphur and ______ is sulphur dioxide gas. When sulphur dioxide is dissolved in ______, sulphurous acid is formed. The sulphurous acid turns ______ litmus paper to ______. Generally oxides of ______ are acidic in nature.
After completing the paragraph, write two questions which you can raise on the basis of this information.
