Q1. Heating lead nitrate produces brown fumes of: A. Nitric oxide ❌B. Nitrogen monoxide ❌C. Nitrogen dioxide ✅D. Nitrous oxide ❌Why correct: Nitrogen dioxide is brown.Why others wrong: The others are colorless gases. Q2. Brown coloured gas NO₂ is: A. Nitrous oxide ❌B. Nitrogen monoxide ❌C. Nitrogen dioxide ✅D. Nitric oxide ❌Why correct: NO₂ is […]
Q1. What happens when milk is left at room temperature during summers? A. It freezes ❌B. It evaporates ❌C. It undergoes a chemical reaction ✅D. It becomes salty ❌ Why correct: Milk turns sour due to formation of new substances.Why others wrong: No freezing, evaporation, or salting occurs. Q2. What change occurs when an iron
Q1. The balanced equation 3Fe + 4H₂O → Fe₃O₄ + 4H₂ uses water as: A. Liquid ❌B. Solid ❌C. Steam ✅D. Ice ❌ Why correct: The reaction occurs with steam, not liquid water.Why others wrong: Liquid/solid/ice forms do not react like this with iron. Q2. Symbol (g) represents: A. Graph ❌B. Gravity ❌C. Gas ✅D.
Chemistry MCQ Quiz Chemistry MCQ Quiz Reset & Reshuffle Show Results Reveal Answers × Quiz Results Your Name: Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0 Percentage 0% Grade – Reshuffles 0 Share via Email Download Summary (CSV)
Chemistry MCQ Quiz – Part 2 0/50 Questions Answered Reset & Reshuffle Show Results Reveal Answers Quiz Results – Part 2 × 0 Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0% Percentage – Grade 0 Reshuffles Your Name Date Share via Email Download Summary (CSV)
Chemistry MCQ Quiz – Part 1 0/50 Questions Answered Reset & Reshuffle Show Results Reveal Answers Quiz Results – Part 1 × 0 Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0% Percentage – Grade 0 Reshuffles Your Name Date Share via Email Download Summary (CSV)
Chemistry MCQ Quiz 0/100 Questions Answered Reset & Reshuffle Show Results Reveal Answers Quiz Results × 0 Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0% Percentage – Grade 0 Reshuffles Your Name Date Share via Email Download Summary (CSV)
Chemistry MCQ Quiz Chemistry MCQ Quiz Reset & Reshuffle Show Results Reveal Answers × Quiz Results Your Name: Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0 Percentage 0% Grade – Reshuffles 0 Share via Email Download Summary (CSV)
Chemistry MCQ Quiz Reset & Reshuffle Show Results Reveal Answers Previous Question 1 of 100 Next Question Quiz Results × 0 Total Questions 0 Attempted 0 Unattempted 0 Correct 0 Wrong 0% Percentage – Grade 0 Reshuffles Your Name Date Share via Email Download Summary (CSV)
Q1. A spherical mirror whose reflecting surface is curved inward is called a) Convex mirror b) Plane mirror c) Concave mirror d) Cylindrical mirror Answer: Concave mirror. Why correct: The surface bends inward. Why others wrong: Others are different types. Q2. A mirror which always forms a virtual, erect and diminished image is a) Concave
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