Chemistry Nios plus two Welcome to your Chemistry Nios plus two Total Questions: 18 Name Mobile No: 1. The orientation of atomic orbital’s depends on their Spin quantum number Principal quantum number 5 Azimuthal quantum number Magnetic quantum number None Hint 2. In the manufacture of sulphuric acid by contact process Tyndall box is used to Test the presence of dust particles Convert SO2 and SO3 Filter dust particles Remove impurities None Hint 3. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°? Three Six Four Two None Hint 4. Molecules are held together in a crystal by Van der Waal’s attraction Electrostatic attraction Hydrogen bond Dipole-dipole attraction None Hint 5. The pH of a 10-10 M NaOH solution is nearest to 10 4 7 -10 None Hint 6. What is the pH of a 0.10 M solution of barium hydroxide, Ba (OH)2? None of these 11.7 13.30 11.31 None Hint 7. Find the molecule with the maximum dipole moment CH4 CO2 NF3 5. NH3 None Hint 8. Which of the following oxides is not expected to react with sodium hydroxide? Beo SiO2 B2O3 5 CaO None Hint 9. H2S is more acidic than H2O because. H — S bond dissociation energy is less as compared to H — O bond. Atomic number of sulphur is higher than oxygen. Oxygen is more electronegative than sulphur. H — O bond dissociation energy is less also compared to H — S bond. None Hint 10. A gas X has Cp and CV ratio as 1.4, at NTP 11.2 L of gas X will contain_______ number of atoms 1.2 × 1023 2.01 × 102 6.02 × 1023 3.01 × 1023 None Hint 11. Which has the lowest boiling point at 1 atm pressure? 0.1 M KCl 0.1 M A1Cl3 0.1 M Urea 0.1 M CaCl2 None Hint 12. One mole of which of the following has the highest entropy? Diamond Mercury Hydrogen Gas Liquid Nitrogen None Hint 13. Which of the following aqueous solutions will have highest pH? CH3COONa NH4Cl Na2CO3 NaCl None Hint 14. Maximum number of electrons in a subshell can be 4l + 2 2l + 1 4. 2n2 4l – 2 None Hint 15. The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows. That the solution is unsaturated No deviation from Raoult’s Law. Negative deviation from Raoult’s Law. Positive deviation from Raoult’s Law. None Hint 16. Third law of thermodynamics provides a method to evaluate which property? Absolute Enthalpy Absolute Energy Absolute Entropy Absolute Free Energy None Hint 17. The boiling points of hydrides of group 16 are in the order H2O > H2Te > H2Se > H2S H2O > H2Te > H2S > H2Se H2O > H2S > H2Se > H2Te None of these None Hint 18. H2S is more acidic than H2O because Oxygen is more electronegative than Sulphur. H — S bond dissociation energy is less as compared to H — O bond. H — O bond dissociation energy is less also compared to H — S bond. Atomic number of Sulphur is higher than oxygen. None Hint Time's up Share: admin Previous post Hindi Nios Plus Two PQ - II June 21, 2025 Next post English Nios Plus Two June 23, 2025
