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Federal (FBISE) · Quarter book test · Free

9th Class Chemistry 1st Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: 5 chapters (01. Nature of Science in Chemistry to 05. Chemical bonding).

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9th Class Chemistry 1st Quarter Book Paper

9th Class · Chemistry · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 40Time: 1 hour

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. Benzene is:
    1. Polar compound
    2. Non-polar compound
    3. Homoatomic compound
    4. Monoatomic compound
  2. Who discovered atomic number?
    1. Moseley
    2. Bohr
    3. Rutherford
    4. Cannizaro
  3. Differentiate between accuracy and precision.
  4. Pure Form of matter having particular characteristics is called:
    1. Mixture
    2. Substance
    3. Both a & b
    4. None of these
  5. Which isotope is commonly used to irradiate cancer cells?
    1. Iodine-123
    2. Carbon-14
    3. Cobalt-60
    4. Iodine-131
  6. The atoms having less than 2 or 8 electrons in their valence shell are:
    1. Stable
    2. Inreactive
    3. Unstable
    4. Noble gases
  7. Which of the following elements belongs to VIII A?
    1. Na
    2. Mg
    3. Br
    4. Xe
  8. List some properties of water?
  9. Anything that has mass and occupies space is called.
    1. liquid
    2. gas
    3. solid
    4. matter
  10. The force present between nucleus and electron is electrostatic force of :
    1. Attraction
    2. Repulsion
    3. Both a, b
    4. None of these
  11. Which of the following is not true about the formation of Na₂S:
    1. Each sodium atom loses one electron
    2. Sodium forms cation
    3. Sulphur forms anion
    4. Each sulphur atom gains one electron
  12. What is the sheilding effect?
    1. increase in nuclear charge
    2. decrease in atomic size
    3. reduction in force
    4. increase in ionization energy

Q2. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. Gram atom of Na is equal to:
    1. 23 amu
    2. 23 g
    3. 24 amu
    4. None
  2. What is Halogens?
  3. Define and Explain Fertilizer?
  4. How does electron affinity change as you move down a group?
    1. increase
    2. decreases
    3. remains constant
    4. fluctuates
  5. What is an unsaturated solution?
  6. Activation energy of a chemical reaction must be ________ the average kinetic energy of reacting molecules.
    1. Lower than
    2. greater than
    3. equal to
    4. None of these
  7. Write down scientific notation?
  8. What is the factors of water scarity in pakistan?
  9. Which of the following atoms will not form cation or anion.
    1. Atomic no. 16
    2. Atomic no. 17
    3. Atomic no. 18
    4. Atomic no. 19
  10. State whether allotropy is shown by elements or compounds?
  11. Give importance of noble gas electronic configuration.
  12. The atoms having less than 2 or 8 electrons in their valence shell are:
    1. Stable
    2. Inreactive
    3. Unstable
    4. Noble gases

Q3. Long questions (Attempt any 3 of 4 · 3 × 4 = 12)

  1. Explain the transition elements?
  2. If there are 18 protons in the Argon atom, them what is the atomic number of Argon?
  3. Represent the formation of cations for the following metal atoms using electron dot structures: (a) Al (b) Sr (c) Ba
  4. Define chemistry and discuss its branches?