(a) 1g CO2 (b) 1g N2 Which of the following has maximum number of atoms? The mass is same for all the four gases. (b) 1 g N 2. 48 molecules of methane. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. Explanation: And a mole specifies 6.022×1023 individual molecules.......and is represented by the N A. a. contains 3 × N A atoms......... b. contains 1⋅ g 100.1⋅ g ⋅ mol−1 × 3 ×N A atoms......... c. contains 4 × N A atoms.........i.e. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. Correct Answer: 2 gm H₂. Which of the following contains maximum number of molecules ? (a) 18g of H 2 O (b) 18g of O 2 (c) 18g of CO 2 (d) 18g of CH 4 7. Ask for details ; Follow Report by 7077 05.02.2020 number of molecules? 3. Explanation: 2 gm of H₂ means one mole of H₂. 2. Which of the following contains maximum number of molecules. Which of the following contains maximum number of molecules? Which of the following has maximum number of atoms? NCERT Solutions of Ch 3 Atoms and Molecules Class 9th Science. of molecules in N 2 = 1 × 6. Soln: Others have less than one mole, so have less number of molecules. Avogadro's number (6.022 x 10^23) is a collective number which tells you how many molecules of a substance there are in 1 mole of that substance. In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C6H1206. Therefore , the answer is ( c ) 8. Performance & security by Cloudflare, Please complete the security check to access. (A) 100 cc of CO2 at STP (B) 150 cc of N2 at STP (C) 50 cc of SO2 at STP (D) 150 cc. A sample of ethane (C2H6) gas has the same mass as 1.5 x 1020 molecules of methane (CH4). MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers MCQs from Class 9 Science Chapter 3 – Atoms and Molecules are provided here to help students prepare for their upcoming Science exam. • a) SiCl 4. A gold sample contains 90% of gold and the rest copper. With the molar mass, this allows you to convert between mass, moles and molecules. The number of oxygen atoms in the solution are. The gas having lowest molar mass will have maximum number of moles and maximum number of molecules. Books. Number of atoms present in 1 molecule of methane ( ) = 5. Which of the following contains maximum number of molecules? (ii) 20 moles of … 15.0 g N2. Chemistry. Which of the following correctly represents 360g of […] Solution : Equal volume of all gases, under similar conditions of temperature and pressure contains equal number of molecules (Avogadro's Law)