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Federal (FBISE) · Quarter book test · Free

9th Class General Science 2nd Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: 04. Structure of Atom, 05. Chemical Bonding, 06. Energy Resources.

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9th Class General Science 2nd Quarter Book Paper

9th Class · General Science · Federal (FBISE)

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

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

  1. The neutral atoms of all of the isotopes of the same element have
    1. Different number of protons
    2. Equal numbers of neutrons
    3. The same number of electrons
    4. The same mass numbers
  2. The reason of bonding in ionic compounds is..........
    1. Sharing of electrons
    2. Repulsion force
    3. Attraction force
    4. None of these
  3. Which is NOT naturally occurring greenhouse gas?
    1. Nitrous oxide
    2. Methane
    3. Carbon dioxide
    4. Ethane
  4. How many neutrons are there in an atom of potassium
    1. 19
    2. 20
    3. 39
    4. 58
  5. A polar covalent bond will be formed in which one of these pair of atoms:
    1. HF
    2. H₂
    3. Cl₂
    4. O₂
  6. Burning of fossil fuels results in:
    1. Increased oxygen level
    2. Decreases greenhouse gases
    3. Increased greenhouse gases
    4. Increased ethane level
  7. What does atomic number of an element indicate indicates?
    1. Neutron plus number of protons in the nucleus
    2. Electron in the nucleus
    3. Neutron in the nucleus
    4. Proton in the nucleus
  8. Ionic compounds have_____ melting points due to _____ ionic compounds
    1. High,weak
    2. High,strong
    3. Low,strong
    4. Low,weak
  9. Which of the following greenhouse gases is present in very high quantities?
    1. Carbon dioxide
    2. Ethane
    3. Propane
    4. Methane
  10. The space surrounding the nucleus is called the
    1. Electron cloud
    2. Ionic field
    3. Nucleus field
    4. Proton cloud
  11. A molecule of ........... contains a triple bond
    1. Sulphur
    2. Nitrogen
    3. Carbon
    4. Oxygen
  12. The two gases making highest relative contribution to the greenhouse gases are:
    1. CH₄ and NO₂
    2. CO₂ and CH₄
    3. CO₂ and N₂O
    4. CFCs and N₂O

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

  1. List the end products of photosynthesis.
  2. Determine the charge of an atom that has lost 3 electrons.
  3. Explain the significance of the atomic nucleus in an atom's structure and function.
  4. Identify the part of the leaf where photosynthesis primarily occurs.
  5. Define the term: ionic bond
  6. Estimate the size of an atom an discuss its scale in comparison to other particles
  7. Identify the type of pollution responsible for smog.
  8. Explain what homoatomic molecules are?
  9. Name and classify the three subatomic particles found in atom
  10. Identify the factors that affect the greenhouse effect.
  11. Name the three types of covalent bonds.
  12. Draw and label the structure of a carbon atom

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

  1. Analyze the relationship between the greenhouse effect and global warming and evaluate their impact on the environment.
  2. Determine whether FeSO₄ is a heteroatomic or homoatomic molecule?
  3. Calculate the number of oxygen atoms in Sn (SO₄)₂ and analyze the role of oxygen in the compounds reactivity
  4. Evaluate the harmful effects of smog and propose strategies to mitigate its impact.