10th Class Chemistry Chapter 6 TestNITROGEN AND SULPHUR

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

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

   1. Water

   2. Oxygen

   3. Hydrochloric acid

   4. Alcohol

2. 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

3. 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

4. Acid rain is defined as rainwater having a pH value of:

   1. Exactly 7

   2. More than 7

   3. Less than 5.6 

   4. Between 6 and 7

5. Which of the following oxides is neutral in character?

   1. Al₂O₃

   2. SO₂

   3. CO₂

   4. NO

6. What is the optimum temperature maintained in the contact chamber for the oxidation of SO₂?

   1. 100°C

   2. 250°C

   3. 450°C

   4. 800°C

7. Major components of acid rain are:

   1. H₂SO₄ and HNO₃

   2. H₂SO₃ and HNO₂

   3. H₂SO₄ and HCl

   4. Acetic acid and HNO₃

8. What is the primary man-made source responsible for generating in cities?

   1. Burning of wood

   2. Combustion of fossil fuels in vehicles

   3. Nuclear power plants

   4. Domestic cooking

9. Metals at the top of the reactivity series are powerful ......... since they are easily oxidized:

   1. Oxidizing agents

   2. Reducing agents

   3. Catalysts

   4. Dehydrating agents

10. The oxygen gas used in the Contact process is obtained from air by which method?

    1. Filtration

    2. Fractional distillation

    3. Evaporation

    4. Electrolysis