SSC (English Medium) 10th Standard - Maharashtra State Board Question Bank Solutions

Identify periods of elements and blocks of elements from given electronic configuration?

1. 2, 8, 2
2. 2, 8, 7
3. 2, 1

Observe the given chart and answer the questions given below.

1. Which elements are in the same row?
2. Which elements have the same column?
3. Which elements are in the 18th column?
4. Which element is more reactive among A and C?
5. Which of the following elements A or B will form compounds?

XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.

1. Determine the position of the element X and Y periodic table.
2. X and Y belongs to which of the following: metals, nonmetals or metalloids?
3. From which block the elements X and Y are?
4. Determine the electronic configuration and valency of these elements.

Observe the periodic table given below and write the answers of the questions.

1. Write the name and valencies of the elements in 3rd row.
2. Classify the elements in this row as metal, nonmetal and metalloids.
3. Which block does nonmetals belong to?
4. Write name of any two metalloid elements.

Make a chart which shows the name of the element, valency, atomic number, electronic configuration in the 2nd row of the modern periodic table and arrange these elements in ascending order of atomic mass.

Observe the figure and write the answers to the questions asked.

1. The construction shown in the figure is of which device?
2. Explain the principle on which this device works.
3. Write any three uses of this device.

In a double displacement reaction ______.

Observe the following diagram and answer the questions.

1. Construction of which equipment does the above diagram show?
2. On which principle does this equipment work?
3. According to which law the coil ABCD rotates?
4. Write the law in your own words.
5. Where is this equipment used?

Add potassium chromate (K₂CrO₄) into the solution of barium sulphate (BaSO₄).

1. What was the colour of the precipitate formed? Also, write the name of the precipitate.
2. Write down the balanced equation for this reaction.
3. Will you call this reaction a displacement reaction or a double displacement reaction? Why?

What is the electronic configuration of K₁₉?

An element has its electron configuration as 2, 8, 1. Now answer the following questions:

1. What is the atomic number of this element?
2. What is the group of this element?
3. To which period does this element belong?

Give scientific reason.

While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.

Given below is a diagram showing a defect of human eye. Study it and answer the following questions.

(i) Name the defect shown in the figure.
(ii) Give reason for this defect of eye in human being.
(iii) Name the type of lens used to correct the eye defect.

The device used for producing electric current is called _________.

Name the following:

Main ore of aluminium.

When does short circuiting take place?

What happens to the resistance of the circuit during a short circuit?

What happens to the flow of electric current during a short circuit?

What is overloading?

How can the effects of overloading be avoided?