List of top Science & Technology Questions asked in Maharashtra Class X Board

How much time will the satellite take to complete one revolution around the Earth? (Radius of Earth = 6400 km.)

Observe the given diagram and answer the questions:
Define ‘spectrum’.

What is a solenoid? Draw a neat diagram and name its various components.

Observe the given diagram and answer the questions:

Name the process shown in the figure.

Observe the given diagram and answer the questions:
Name the colour that deviates the most.

State Newton’s universal law of gravitation.
The focal length of a convex lens is 20 cm. What is its power?
What are the factors affecting the rate of chemical reaction?

Complete the following table by observing the given figures:

What is meant by satellite launch vehicle? Name any one Indian satellite launch vehicle.

Observe the following graph and answer the following questions:

What does the graph represent?

Write any three general properties of ionic compounds.
What is free fall? When is it possible?

Match the Columns:

Tungsten metal is used to make a solenoid-type coil in an electric bulb.
On exposure to air, silver articles turn blackish after some time.
Give scientific reasons (any two):
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
Answer the following (any three):
State Dobereiner's law of triads. Give one example of it.
Write the molecular formula of calcium carbonate.

Identify the hydrocarbon from the given electron-dot structure:

Identify the figure and explain its use.

Answer the following:
Write the name of the atom having the smallest size.
....................... is the functional group of carboxylic acid.
In .................. process, a layer of molten tin is deposited on metals.
The SI unit of heat is ..........................................