Question:

The Soda feldspar is also known as

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Soda feldspar is albite \((NaAlSi_3O_8)\), potash feldspar is orthoclase, and lime feldspar is anorthite.
  • Orthoclase
  • Albite
  • Anorthite
  • Dickite
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The Correct Option is B

Solution and Explanation

Concept: Feldspars are important rock-forming minerals. They are alumino-silicates of potassium, sodium, and calcium.

Step 1:
Soda feldspar means feldspar containing sodium.

Step 2:
The sodium-rich feldspar is known as albite.

Step 3:
The chemical formula of albite is: \[ NaAlSi_3O_8 \]

Step 4:
Orthoclase is potassium feldspar, while anorthite is calcium feldspar.

Step 5:
Hence, soda feldspar is: \[ \boxed{\text{Albite}} \]
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