10th Class Chemistry Past Paper MCQs Leave a Comment / Uncategorized / By Majid Ali PAST PAPER MCQs 1 / 12 1- About 99% of atmospheric mass lies within: (A) 30 kilometers (B) 35 kilometers (C) 15 kilometers (D) 11 kilometers 2 / 12 2- Which of the following is not a greenhouse effect? (A) Increasing atmospheric temperature (B) Increasing food chain (C) Increasing flood risks (D) Increasing sea level 3 / 12 Specific heat capacity of water is: (A) 4.2 Jg⁻¹K⁻¹ (B) 4.2 KJg⁻¹K⁻¹ (C) 2.4 KJg⁻¹K⁻¹ (D) 2.4 Jg⁻¹K⁻¹ 4 / 12 Global warming is because of: (A) CO (B) O₂ (C) CO₂ (D) O₃ 5 / 12 An acute infection caused by the bacteria Vibrio cholerae is: (A) Dysentery (B) Cholera (C) Hookworm (D) Typhoid 6 / 12 Crude oil is heated in the furnace up to: (A) 300°C (B) 350°C (C) 400°C (D) 450°C 7 / 12 A reverse reaction is one: (A) Which proceeds from left to right (B) In which reactants react to form products (C) Which slows down gradually (D) Which speeds up gradually 8 / 12 What is the pOH of 0.02M Ca(OH)₂? (A) 1.698 (B) 1.397 (C) 12.31 (D) 12.61 9 / 12 Coal gas is a mixture of: (A) CO and CH₄ (B) CO, CH₄ and CO₂ (C) CO, CH₄ and H₂ (D) CO, H₂ and CO₂ 10 / 12 Which scientist prepared urea in the laboratory? (A) Wöhler (B) Rutherford (C) Berzelius (D) Dalton 11 / 12 The reduction of alkyl halides takes place in the presence of: (A) Zn/HCl (B) Na/HCl (C) Mg/HCl (D) Cu/HCl 12 / 12 Which one of the following is a fat-soluble vitamin? (A) A (B) E (C) K (D) All of these Your score isThe average score is 66% 0% Restart quiz Related posts: MCQs Related to Introduction and Composition of atmosphere || 10th Chemistry Chapter 14 Gujaranwala baord 2022 chemistry past paper MCQs Related to Introduction, occurrence and physical properties of water || 10th Chemistry Chapter 15 Chemistry 10TH MCQs Past Paper Sargodha Board 2022 QUIZ
