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