Chemical Reactions and Equations

Short Answers

Question: 1: Which substance is flushed in bags of potato chips to prevent rancidity?

Answer: Nitrogen

Question: 2: What is the name of reaction in which an atom, molecule or ion gains oxygen?

Answer: Oxidation reaction

Question: 3: Question: 2: What is the name of reaction in which an atom, molecule or ion loses oxygen?

Answer: Reduction reaction

Question: 4: What is the chemical name of rust?

Answer: Iron oxide

Question: 5: Which substance does get oxidized in rancidity of food?

Answer: Fats present in food

Question: 6: In which reaction generally heat is evolved?

Answer: Combination reaction

Question: 7: In which reaction generally heat is absorbed?

Answer: Decomposition reaction

Question: 8: Which reaction is used in black and white photography?

Answer: Thermal decomposition

Question: 9: Which chemical substance is used to print impression of black and white photography paper?

Answer: Silver chloride or Silver bromide

Question: 10: What is the chemical name of quick lime?

Answer: Calcium oxide

Question: 11: What is the chemical name of limestone?

Answer: Calcium carbonate

Question: 12: What is the chemical name of slaked lime?

Answer: Calcium hydroxide

Question: 13: Which chemical substance is used in white washing?

Answer: Calcium hydroxide (Slaked lime)

Question: 15: What is a chemical equation?

Answer: Symbolic representation of chemical reaction is called chemical equation.