List of practice Questions

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

What is meant by satellite launch vehicle? Name any one Indian satellite launch vehicle.
What is free fall? When is it possible?
The focal length of a convex lens is 20 cm. What is its power?
What are the factors affecting the rate of chemical reaction?

Observe the following graph and answer the following questions:

What does the graph represent?

Complete the following table by observing the given figures:

Write any three general properties of ionic compounds.
State Newton’s universal law of gravitation.
Write the molecular formula of calcium carbonate.

Identify the hydrocarbon from the given electron-dot structure:

Match the Columns:

Give scientific reasons (any two):
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.
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.
Answer the following (any three):
State Dobereiner's law of triads. Give one example of it.

Identify the figure and explain its use.

The SI unit of heat is ..........................................
We can see the sun even when it is a little below the horizon because of ..........................................
....................... is the functional group of carboxylic acid.
In a simple microscope, ........................ lens is used.
In .................. process, a layer of molten tin is deposited on metals.
Answer the following:
Write the name of the atom having the smallest size.
Write the molecular formula of calcium carbonate.
Translate the following sentences into your medium of instruction
Remove your shoes outside the library.