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Punjab (PTB) · Quarter book test · Free

10th Class Chemistry 2nd Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: 4 chapters (CHAP 18: SALTS to CHAP 21: ORGANIC CHEMISTRY).

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10th Class Chemistry 2nd Quarter Book Paper

10th Class · Chemistry · Punjab (PTB)

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

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

  1. Which two elements are specifically known to increase the risk of certain cancers?

    1. Lead and Mercury

    2. Arsenic and Cadmium

    3. Chromium and Copper

    4. Nitrogen and Phosphorus

  2. Hydrocarbons containing at least one double or triple bond are called:

    1. Saturated hydrocarbons

    2. Unsaturated hydrocarbons

    3. Alkanes

    4. Monosaccharides

  3. According to the solubility rules, which of these groups of salt are always soluble in water?

    1. All sodium, potassium, and ammonium salts

    2. Barium and lead sulfates

    3. Silver and lead chlorides

    4. All

  4. To obtain sulphuric acid of desired concentration, oleum is mixed with an appropriate amount of:

    1. Water

    2. Oxygen

    3. Hydrochloric acid

    4. Alcohol

  5. Effective management of which resources is required to face future challenges in Pakistan?

    1. Forest resources

    2. Mineral resources

    3. Water resources

    4. Land resources

  6. The part of the IUPAC name that indicates the presence of a substituent group attached to the parent chain is:

    1. Root

    2. Suffix

    3. Prefix

    4. Bond

  7. Where are the smaller sodium ions located in the sodium crystal cube?

    1. At the corners of the cube

    2. At the center of each face

    3. In the edges of the cube

    4. Floating outside the cube

  8. What is the product formed when Zinc oxide reacts with an alkali like NaOH?

    1. Zinc chloride

    2. Sodium zincate

    3. Sodium aluminate

    4. Zinc hydroxide

  9. Adding too much quantity of micro-nutrients can be dangerous because they are:

    1. Beneficial

    2. Poisonous

    3. Insoluble

    4. Gaseous

  10. While showing the arrangement of atoms in a molecule, it is usual to omit most of the:

    1. Double bonds

    2. Triple bonds

    3. Single covalent bonds

    4. Functional groups

  11. What is the three dimensional network structure formed by ions in a salt called?

    1. Atomic cloud

    2. Liquid matrix

    3. Molecular chain

    4. Crystal lattice

  12. The arrangement of metals in the decreasing order of their reactivities is called:

    1. Periodic series

    2. Reactivity series

    3. Homologous series

    4. Displacement series

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

  1. Define the reactivity series of metals.

  2. What information does the "Root" provide in IUPAC nomenclature? Give an example.

  3. Which reactants are used to prepare soluble potassium nitrate?

  4. How does potassium fertilizer make plants physically strong?

  5. How do group 1 metals (Na, K) react with cold water?

  6. What is the difference between saturated and unsaturated hydrocarbons?

  7. How is excess amount of the base or the metal remove from the mixture?

  8. Which minerals are typically found in tap water?

  9. State the balanced chemical equation for the synthesis of ammonia.

  10. Name the three parts that make up the entire IUPAC name of an organic compound.

  11. What is the role of an evaporating dish in the salt crystallization process?

  12. Why is flood irrigation considered a disadvantageous practice for water management?

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

  1. How domestic water supply can be made fit for drinking?

  2. Define the phenomenon of isomerism. Explain structural isomerism in detail by giving examples of both saturated and unsaturated hydrocarbons, along with their structural formulas.

  3. Write a detailed note on the reactivity series of metals.

  4. Describe which salts are soluble in water and which are insoluble.