Chemistry - Study Mode

[#166] The percentage of carbon in cast iron is :
Correct Answer

(D) 3 to 5

Explanation

Solution: The percentage of carbon in cast iron is 3 to 5.

[#167] Brass is a solution of molten copper in
Correct Answer

(B) Molten zinc

Explanation

Solution: 'Brass' is a solution of molten copper in Molten zinc. Brass is an alloy of 'copper and zinc'.

[#168] Which of these acids is not organic in origin?
Correct Answer

(B) Sulphuric acid

Explanation

Solution: Sulphuric acid is produced from sulfur, oxygen and water via the conventional contact process (DCDA) or the wet sulfuric acid process (WSA). Sulfuric acid can be produced in the laboratory by burning sulfur in air and dissolving the gas produced in a hydrogen peroxide solution.

[#169] Match the sourc in Column B with the product of Column A. (Product) Column B (Source) A. Formic acid 1. Lemon B. Citric acid 2. Tamarind C. Tartaric acid 3. Ants
Correct Answer

(B) A B C 3 1 2

[#170] Saline soil contains
Correct Answer

(A) High concentration of salt

Explanation

Solution: Saline soil contains high concentration of salt.