2nd Year Chemistry Chapter 1 Online MCQs Test

Here is the 2nd Year Chemistry Chapter 1 Online MCQs Test. It will provide students with the opportunity to assess their knowledge and skills through the online test. This test not only helps you learn, but it allows you to gain better grades. This online test is for those who would like to achieve full marks in their exams. It will be beneficial for you if you try all the online tests prior to your exam.

From chapter 1 Periodic Classification of Elements and Periodicity, you will need to know the following topics for this test:

• Introduction
• The Modern Periodic Table
• Periodic Trends in Physical Properties
• Periodic Relationship in Compounds
• The Position of Hydrogen

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2nd Year Chemistry Chapter 1 Quiz

 Online Test Instructions

 Type: MCQs
 Total Questions: 10
 Total Marks: 10
 Time: 05 minutes

 Questions will be shuffled each time you start the test.
 You can not skip any question.
 Once you are finished, click the See Results button.

1 / 10

1) Which of the following pair of atomic numbers represents IIA elements:

a) 4, 20

b) 3, 11

c) 3, 12

d) 3, 20

The pair of atomic numbers 3 (Li) and 12 (Mg) both belong to Group IIA, known as alkaline earth metals, showcasing similar properties.

2 / 10

2) The decrease in nuclear force on valence electrons, because of the increase in number of shells containing electrons and layering above is known as:

a) None

b) Shielding effect

c) Inductive effect

d) Resonance effect

The shielding effect describes how inner electrons reduce the effective nuclear charge felt by valence electrons, impacting their energy levels.

3 / 10

3) Polymeric (Intermediate) hydride shall be formed by:

a) Be

b) C

c) K

d) Na

Carbon can form polymeric hydrides, which are complex compounds with varying structures and properties, often found in organic chemistry.

4 / 10

4) Which of the following has highest value of Ionization Energy:

a) Al²⁺

b) Na

c) Al³⁺

d) Al⁺

Al³⁺ has the highest ionization energy among the choices because it has lost multiple electrons, resulting in a strong positive charge that holds remaining electrons tightly.

5 / 10

5) Which of the following elements is most electronegative:

a) Chlorine

b) Oxygen

c) Fluorine

d) Nitrogen

Fluorine is the most electronegative element, meaning it has the strongest ability to attract electrons in chemical bonds, crucial in forming compounds.

6 / 10

6) The Ionization energy of Sodium is:

a) 500 K.J mol¹

b) 513 K.J mol

c) 496 K.J mol

d) 480 K.J mol

The ionization energy of sodium is the energy required to remove its outermost electron, making it an important factor in understanding its reactivity.

7 / 10

7) Total groups in modern periodic table:

a) 10

b) 18

c) 8

d) 7

The modern periodic table consists of 18 groups, reflecting the unique properties and behaviors of elements across various categories.

8 / 10

8) Hydrogen can be placed with the element of group (IV-A) because both:

a) Possess the property of catenation

b) Form neutral oxides

c) Act as strong oxidizing agent

d) Act as strong reducing agent

Hydrogen can be grouped with IV-A elements due to its ability to form neutral oxides, similar to the behavior of carbon and silicon.

9 / 10

9) In Potassium super oxide (KO₂) oxidation state of O is:

a) -1

b) -1/2

c) -2

d) -4

In potassium superoxide (KO₂), the oxidation state of oxygen is -1, reflecting its unique bonding environment in this compound.

10 / 10

10) Hydrogen can be placed above the groups of the periodic table:

a) IIIA, IVA and VA elements

b) IIA, IIIA and VIIA elements

c) VIIA Elements

d) IA, IVA and VIIA elements

Hydrogen can be aligned with IA, IVA, and VIIA elements in the periodic table because it shares similar properties, such as forming bonds and behaving as both a reducing and oxidizing agent.

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This Chemistry Chapter 1 Online Test for the 12th Class has been prepared in accordance with the syllabus of Punjab Boards. In Punjab, there are the following boards: the Gujranwala Board, the Lahore Board, the Faisalabad Board, the Multan Board, the Rawalpindi Board, the Bahawalpur Board, the Sargodha Board, and the DG Khan Board.

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