SSC (Marathi Semi-English) १० वीं कक्षा - Maharashtra State Board Important Questions for Science and Technology 1

State the modern periodic law.

Fill in the blank and rewrite the completed statement:

________ group in the periodic table contains elements that are all gases at room temperature.

Answer the following question:
State the four blocks of the modern periodic table based on the electronic configuration of elements.

Distinguish between:

s-block - p-block

Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.

1. What is A element metal or nonmetal?
2. Which is the outermost orbit of element B?
3. Identify C element and it's physical state.

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?

Complete the correlation:

Group 1 : Alkali metals : : ______ : Halogens.

Write the answer to the questions with reference to the periodic table.

1. What do (A), (B), (C), and (D) represent?            [1]
2. Elements are arranged in increasing order of their ______.            [1]
3. Write the electronic configuration of the first four elements in Group I.            [1]
4. What change in atomic radius is observed in moving from left to right in a Period?            [1]
5. Give a reason for (d).            [1]

Match the columns:

Answer the following questions related to the modern periodic table.

Name the blocks with the groups that they consist of.

Answer the following questions related to the modern periodic table.

Which block elements are known as transition elements?

Answer the following questions related to the modern periodic table.

How are elements placed around the zig-zag line in the p-block of the periodic table?

Define periods of modern periodic table.

Define groups of modern periodic table.

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?

Select the appropriate options and complete the following paragraph:

(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).

On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.

Corrosion can be prevented by using ……………. solution.

Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
(c) Displacement reaction
(d) Double displacement reaction

Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________