Home Quizzes Chemistry Quiz Chemistry Quiz 1 MCQ Questions Answers By Priyamstudycentre - December 28, 2020 23 Chemistry Quiz 1, online questions and answers to grow the knowledge of chemistry for different types of school college competitive examinations. The Quiz set contains 10 multiple choice questions (MCQ) from different topics of chemistry for all competitive exams. Among the following, the species with identical chemical bond order CO and O₂⁻² O₂⁻ and CO O₂⁻² and B₂ CO and N₂⁺ The role of hemoglobin is to Store oxygen in muscles Transport oxygen to different part of body Convert CO to CO₂ Convert carbon-dioxide to carbonic acid The paper soaked in salt X turns brown when exposed to HNO3 vapor, the salt X is KCl KBr KI K₂SO₄ The formal oxidation number of Cr and Cl in the ions Cr2O7-2 and ClO3- are +6 and +7 +7 and +5 +6 and +5 +8 and +7 The hybridization of xenon atom in XeF4 SP³ dsp² sp³d² d²sp³ The correct order of energy of 2S orbitals in H, Li, Na and K K < Na < Li < H Na < Li < K < H Na < K < H < Li H < Na < Li < K A container of volume 2.24 lit can stand with a maximum pressure of 2 atm at 298K before exploding. The maximum amount of nitrogen that can be safely put to the container at this temperature closet to 2.8 gm 5.6 gm 1.4 gm 4.2 gm Among the following, the correct statement No two electrons in an atom can have the same set of four quantum numbers The maximum number of electrons in the shell with the principal quantum number, n equal to n2 +2 Electrons in an orbital must have opposite spin In the ground state, atomic orbitals filled in the order of their increasing energies The solubility of BasO4 in pure water is closest to[Given KSP = 1.0 × 10-10 at 250C and molecular weight = 233 gm mol-1] 1.0 × 10⁻⁵ 1.0 × 10⁻³ 2.3 × 10⁻⁵ 2.3 × 10⁻³ Among the following, the correct statement is pH decreases when solid ammonium chloride added to a dilute aqueous solution of NH3. pH decreases when solid ammonium acetate added to a dilute aqueous solution of acetic acid. When solid NaCl added to a dilute aqueous solution of NaOH pH decrease. pH decreases when solid sodium oxalate added to a dilute aqueous solution of oxalic acid. The number of water molecules in 250 ml of water solution closest to[Given the density of water 1.0 gm ml-1; Avogadro number = 6.023 × 1023] 83.6 × 10²³ 13.9 × 10²³ 1.5 × 10²³ 33.6 × 10²³ Your score is The average score is 31% LinkedIn Facebook Twitter 0% Restart quiz
