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Punjab (PTB) · Chapter test · Free

1st Year Chemistry Chapter 1 TestPeriodic Table and Periodic Properties

30 marks · 40 minutes · 21 questions. Covers: CHAP 1: Periodic Table and Periodic Properties.

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1st Year Chemistry Chapter 1 Test

1st Year · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Which one of the following elements has the highest ionization energy?

    1. Sodium (Na)

    2. Magnesium (Mg)

    3. Aluminium (Al)

    4. Argon (Ar)

  2. Which property increases as you go down a group in the periodic table?

    1. Atomic radius

    2. Electron Affinity

    3. Electronegativity

    4. Ionization energy

  3. Which set of the following conditions results in higher ionization energy?

    1. Smaller atom and greater nuclear charge

    2. Smaller atom and smaller nuclear charge

    3. Larger atom and greater nuclear charge

    4. Larger atom and the smaller nuclear charge

  4. Which is the most strongly acidic:

    1. MgO

    2. Al2O3

    3. SO3

    4. P2O5

  5. The amount of energy given out when an electron is added to an atom is called:

    1. Lattice energy

    2. Ionization energy

    3. Electronegativity

    4. Electron affinity

  6. Which is the most basic oxide?

    1. MgO

    2. Na2O

    3. As2O3

    4. CI2O7

  7. The atomic radii of the elements in the periodic table:

    1. Increase from left to right in a period

    2. Increase from top to bottom in a group

    3. Do not change from left to right in a period

    4. Decrease from top to bottom in a group

  8. Alkali metals are strong reducing agents because:

    1. These are metals

    2. Their atomic radii are large

    3. They are monovalent

    4. Their ionization energies are very low

  9. The second electron affinity of oxygen is:

    1. 141 KJ mole-¹

    2. +780 KJ mole-¹

    3. 337 KJ mole-¹

    4. +29 KJ mole-¹

  10. The modern periodic table consists of .....:

    1. 8 horizontal rows & 12 vertical columns

    2. 7 horizontal rows & 18 vertical columns

    3. 15 horizontal rows & 14 vertical columns

    4. 16 horizontal rows & 8 vertical columns

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Why the elements of group VI-A have less ionization energy values than V-A?

  2. Define metals and give example?

  3. What is 1st ionization energy? Give an example.

  4. What is a triad?

  5. Basic character of oxides increases down the group. Justify it.

  6. Consider the chlorides of sodium, magnesium, and phosphorus(V): NaCl, MgCI2, and PCl5 (i) Classify each of these chlorides as acidic, basic, or neutral.(ii) For each chloride, briefly explain the reason for your classification, referring to their behavior when dissolved in water.

  7. Give salient features of period 4 in the modern Periodic Table.

  8. Why Na reacts vigorously with water?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Define ionization energy. Discuss the factors affecting and periodic trends of ionization energy.

  2. How are group number of period number significant in the arrangement of elements in the periodic table? How are these helpful in predicting the the properties of elements?

  3. Explain with the help of equations, acidic and basic behavior of oxides and chlorides.