Please select a subject first
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List the main parts of an electric motor.
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Write the differences between elements and compounds and give an example for each.
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Complete the following table.
| Atomic Number | Mass Number | Number of Neutrons | Number of Protons | Number of Electrons | Name of the Element |
| 9 | ______ | 10 | ______ | ______ | ______ |
| 16 | ______ | 16 | ______ | ______ | ______ |
| ______ | 24 | ______ | ______ | 12 | Magnesium |
| ______ | 2 | ______ | 1 | ______ | ______ |
| ______ | 1 | 0 | 1 | 1 | ______ |
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What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
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Buckminster Fullerene contains ______ carbon atoms.
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Match the following.
| Antipyretics | Large surface area |
| Corrosion prevention | Iodine-131 |
| Hyperthyroidism | Fever |
| Nanoparticle | Body building |
| Proteins | Electroplating |
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The skeletal framework of Porifera is ______.
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Comment on the aquatic and terrestrial habits of amphibians.
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Which of the following is a complex tissue?
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Write about the elements of Xylem.
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To prevent the entry of food into the trachea, the opening is guarded by ______.
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Differentiate the following.
Ingestion and Egestion
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State whether true or false. If false, correct the statement.
Iron is required for the proper functioning of thyroid gland.
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Assertion: Haemoglobin contains iron.
Reason: Iron deficiency leads to anaemia
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Differentiate
Macronutrients from Micronutrients
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Why salt is used as preservative in food?
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Write any one function of the following minerals
- Calcium
- Sodium
- Iron
- Iodine
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The value of an astronomical unit is ______.
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Match the following:
| Column-I | Column-II | |
| 1. | 10 years | 1 year |
| 2. | 10 centuries | 1century(100 years) |
| 3. | 10 decades | 1 millennium |
| 4. | 365.24 days | 1 decade |
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Assertion (A): Light year and wavelength both measure distance
Reason (R): Both have dimensions of time.
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