صنعتی اور ماحولیاتی کیمیا

بارہویں جماعت · کیمیا · 5 سوالات

نام: ____________________   تاریخ: ____________

1. Ammonia is made industrially by the:

   • A Contact process
   • B Solvay process
   • C Ostwald process
   • D Haber process

2. The catalyst in the contact process is:

   • A Iron
   • B Vanadium(V) oxide
   • C Nickel
   • D Platinum on silica only

3. Biodegradable waste is broken down by:

   • A Metals
   • B Sunlight only
   • C Microorganisms
   • D Plastics

4. Catalytic converters in cars reduce emissions of:

   • A Nitrogen
   • B Carbon monoxide and nitrogen oxides
   • C Oxygen
   • D Water vapour

5. Eutrophication of lakes is caused by excess:

   • A Oxygen
   • B Nitrates and phosphates
   • C Sodium chloride
   • D Sunlight