Some Basic Concepts of Chemistry

JEE Main Chemistry · 10 questions

All questions, latest first

• Match List - I with List - II. Choose the correct answer from the options given below:20268 April, Shift 2 · Q51
• Which of the following contain the same number of atoms? (Given: Molar mass in g mol^-1 of H, He, O and S are 1, 4, 16 and 32…20266 April, Shift 2 · Q51
• An oxide of iron contains 69.9 % iron, its empirical formula, is: (Given: Molar mass of Fe and O are 56 and 16 g mol^-1…20266 April, Shift 1 · Q51
• What volume of hydrogen gas at STP would be liberated by action of 50 mL of H_2 SO_4 of 50 % purity (density =1.3 g mL^-1 ) on 20…20265 April, Shift 2 · Q51
• How many grams of residue is obtained by heating 2.76 g of silver carbonate? (Given: Molar mass of C, O and Ag are 12, 16 and 108…20265 April, Shift 1 · Q51
• The correct order of total number of atoms present in 2 moles of cyclohexane 684 g of sucrose 90.8 L of dihydrogen at STP is:20264 April, Shift 2 · Q51
• Number of moles and number of molecules in 1.4187 L of SO_2 at STP respectively are20264 April, Shift 1 · Q51
• The ratio of mass percentage ( w / w ) of C: H in a hydrocarbon is 12: 1. It has two carbon atoms. The weight (in g ) of CO_2( g)…20262 April, Shift 2 · Q51
• The mass of iron converted into Fe_3 O_4 by the action of 18 g of steam is: (Given: Molar mass of H, O and Fe are 1, 16 and 56 g…20262 April, Shift 1 · Q51
• One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the…20262 April, Shift 1 · Q73