SSC (English Medium) 10th Standard - Maharashtra State Board Important Questions for Science and Technology 1

Define corrosion.

Define corrosion.

Give a scientific reason.

Simple microscope is used for watch repairs.

Solve the problem.

If the mass of a planet is eight times the mass of the Earth and its radius is twice the radius of the Earth, what will be the escape velocity for that planet?

Write a short note.

Escape Velocity

Give scientific reasons for the following:

Atomic radius goes on decreasing while going from left to right in a period.

Write a scientific reason.

Atomic radius goes on increasing down a group.

Write scientific reason.

Elements belonging to the same group have the same valency.

An element has its electron configuration as 2, 8, 2. Now answer the following question.

What is the group of this element?

State the modern periodic law.

Define ‘redox reaction’. Give one example.

• Complete the given chemical reaction:
  \[\ce{CuSO4_{(aq)} + Fe_{(s)} ->}\] _______ + _______
• Name the type of the reaction.

The chemical reaction in which two or more products are formed from a single reactant is called ______ reaction.

Observe the following figure and write the answer of the question.

1. Which process is shown in the figure?
2. Explain the chemical reaction shown in the figure.
3. Write the reactions on anode and cathode.

The device used for producing electric current is called _________.

Give a scientific reason:

For electric power transmission, copper or aluminium wire is used.

Identify the figure and give its use.

Identify the figure and give its use.

Name the following diagram and explain the concept behind it.

Identify the figure and give its use.