Please select a subject first
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In the chemical equation the _______ are written on the left-hand side.
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A group of students from COEP Pune sent a small satellite _______ through ISRO in 2016.
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Diamond : electric insulator : : _______ : electric conductor
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Complete the given chemical reaction.
\[\ce{CuSO_{4(aq)} + Fe_{(s)} ->}\]______ + ______
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The function of a satellite launcher is based on Newton's second law of motion.
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Write an Explanation.
Balanced equations
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Write scientific reason.
Adding zinc particles to a solution of copper sulphate makes the blue solution colorless.
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What are reactants? Explain with the help of example.
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What are products? Explain with the help of example.
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Name any two appliances which works on the phenomenon of magnetic effect of electric current.
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Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.
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What is Medium Earth Orbit?
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Distinguish between:
High Earth orbit - Medium Earth orbit.
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Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
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Write three steps of writing chemical equations with example?
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Draw a neat labelled diagram to show the magnetic effect of electric current.
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Identify the given figure, write the labels of it.
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Observe the figure and write the answers.
- Name the outer orbit.
- Which satellites revolve in low earth orbits?
- Which various orbits are given in the figure?
- Give an example of a launch vehicle based on Newton’s third law.
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Write functions of Military satellite and Navigational satellite.
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Note the relationship between the entries in all the three columns in the table and rewrite the table.
| Column-1 (Location) |
Column-2 Height from the earth’s surface (km) |
Column-3 g (m/s2) |
| Earth’s surface (average) | 8.8 | 0.225 |
| Mount Everest | 36.6 | 9.81 |
| Maximum height ever reached by manmade balloon | 400 | 9.8 |
| Orbit of a typical weather satellite | 35700 | 9.77 |
| Orbit of communication satellite | 0 | 8.7 |
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