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