UPSC NDA I 2017 General Ability Solved Paper

Concept:Baking soda is chemically known as sodium bicarbonate.Explanation:Baking soda is a white crystalline powder used in cooking and cleaning.Its chemical name is sodium bicarbonate, with the formula $NaHCO_{3}$.This compound is different from other carbonates and hydroxides.$Na_{2}CO_{3}$ is sodium carbonate, commonly called washing soda.$CaCO_{3}$ is calcium carbonate, found in chalk, limestone, and marble.$NaOH$ is sodium hydroxide, known as caustic soda.Only $NaHCO_{3}$ corresponds to baking soda among the given options.Answer:$NaHCO_{3}$ (Option B)