دسویں جماعت · کیمیا · 9 سوالات
نام: ____________________ تاریخ: ____________
Urea is mainly used as a:
The Solvay process is used to manufacture:
Sulphuric acid is made industrially by the:
Crude petroleum is separated into fractions by:
Cement is made by heating limestone with:
Ammonia is mainly used to make:
The raw material for making glass is mainly:
Which of these is a fossil fuel?
Natural gas is mainly used as a:
1. A, 2. A, 3. C, 4. C, 5. C, 6. C, 7. A, 8. B, 9. D
Urea gives plants nitrogen.
Sodium carbonate (soda ash) is made by the Solvay process.
The contact process uses a vanadium oxide catalyst.
The fractions have different boiling points.
Limestone and clay are heated in a kiln and ground to make cement.
A large share of ammonia goes into fertilisers.
Silica sand is the main ingredient.
Coal is formed from ancient plants.
It is burnt for heating and electricity.