Sulfur igcse

Statement 1: The burning of fossil fuels containing sulfur is a cause of ‘acid rain’. Statement 2: Acid rain contains sulfur dioxide which is formed when sulfur compounds burn in the air. Which of the following is true?

• Both statements are correct and statement 2 explains statement 1.

• Both statements are correct, but statement 2 does not explain statement 1

• Statement 1 is correct but statement 2 is incorrect.

• Statement 2 is correct but statement 1 is incorrect.

2.Which of these are ores of sulfur

• Haematite

• Zinc blende

• Bauxite

• Chalcopyrite

3.which of these are conditions of the contact process?

• 2atm, 400 C

• 1 atm, 450 C

• 1 atm 350 C

• 2 atm 300 C

4.Name the catalyst used in Contact process

• Iron

• Platinum

• Manganese dioxide

• Vandium ( V) oxide

5. Identification test for So2 is

• Potassium dichromate turns colorless

• Potassium permanganate turns colorless

• Potassium pentaoxide turns colorless

• Potassium maganate turns colorless

Which of these processes in Contact is reversible

• Burning of sulfur in oxygen

• Oxidation of sulfur dioxide

• Formation of oleum

• Dilution of oleum

7. Sulfuric acid is strong ...... and ........

• reducing, dehydrating agent

• reducing, bleaching agent

• oxidizing, dehydrating agent

• oxidizing, bleaching agent

8. Which of the following is the source of sulfur?

• Steam reforming

• Cracking of crude oil

• Volcanic craters

• Fractional distillation of air

9.Which statement about sulfur is not correct?

• Used in the preparation of sulfuric acid

• The atomic mass of sulfur is 32

• The atomic number of sulfur is 15

• Pure sulfur is yellow in color

10. Sulfuric acid is used for

• making detergents

• making fertilizers

• in car batteries

• as laboratory reagent