Chemistry Fundamentals for RRB
Test your chemistry knowledge with these key concepts frequently asked in Railway Recruitment Board exams
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: Which gas is commonly known as laughing gas?
Carbon dioxide
Nitrous oxide
Sulfur dioxide
Nitrogen dioxide
Question 2: What is the process of conversion of a solid directly to gas called?
Sublimation
Evaporation
Condensation
Fusion
Question 3: Which element has the highest electronegativity?
Oxygen
Chlorine
Fluorine
Nitrogen
Question 4: What is the pH of a neutral solution at 25°C?
0
7
14
1
Question 5: Which of these is an example of a noble gas?
Nitrogen
Chlorine
Neon
Oxygen
Question 6: What type of bond is formed by sharing of electrons?
Ionic bond
Covalent bond
Metallic bond
Hydrogen bond
Question 7: Which of these is an amphoteric oxide?
Zinc oxide
Calcium oxide
Magnesium oxide
Sodium oxide
Question 8: What is the most abundant element in Earth's crust?
Silicon
Oxygen
Aluminum
Iron