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When a spacecraft is launched into outer space, the velocity attained by it should be greater than the escape velocity.
Concept: Space Missions Away from Earth
Calculate the time taken by a satellite for one revolution revolving at a height of 6400 km above the earth's surface with a velocity of 5.6 km/s.
Concept: Orbits of Artificial Satellites
The height of medium earth orbit above the surface of the earth is ______.
Concept: Orbits of Artificial Satellites
Write the name of small satellite made by a group of students from COEP (College of Engineering, Pune) sent to the space through ISRO in 2016.
Concept: Orbits of Artificial Satellites
Complete the Following table.
| Sr. no. | Type of Satellite | The names of Indian Satellite and launcher |
| (1) | Navigational Satellite | Satellite: ______ |
| Launcher: ______ | ||
| (2) | Earth Observation Satellite | Satellite: ______ |
| Launcher: ______ |
Concept: Orbits of Artificial Satellites
Complete the following equations:
Concept: Orbits of Artificial Satellites
What is meant by a satellite launch vehicle?
Concept: Satellite Launch Vehicles
Name any one Indian satellite launch vehicle.
Concept: Satellite Launch Vehicles
The orbit of a satellite is exactly 35780 km above the earth's surface and its tangential velocity is 3.08 km/s.
How much time the satellite will take to complete one revolution around the earth?
(Radius of earth = 6400 km.)
Concept: Orbits of Artificial Satellites
Fill in the blank:
The modern periodic table consists of ……………. periods.
Concept: The Modern Periodic Table
Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
Concept: Periods and Electronic Configuration
The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.
Concept: Mendeleev’s Periodic Table >> Insights into Mendeleev’s Periodic Table
The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.
Concept: Mendeleev’s Periodic Table >> Insights into Mendeleev’s Periodic Table
Elements in the same group show the same valency. Give scientific reason.
Concept: Periods and Electronic Configuration
Write the electronic configuration of K and Ne.
Concept: Periods and Electronic Configuration
The atomic masses of three elements A, B and C having similar chemical properties are 7, 23 and 39, respectively.
- Calculate the average atomic mass of elements A and C.
- Compare the average atomic mass with atomic mass of B.
- What could the elements A, B and C be?
Concept: Periods and Electronic Configuration
Classify the following elements into metals, non-metals and metalliods
As, C, Hg, Mg, S, Si
Concept: Periods and Electronic Configuration
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Concept: The Modern Periodic Table
Differentiate between Normal elements and Transition elements.
Concept: Periods and Electronic Configuration
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
Concept: The Modern Periodic Table
