Chemistry Nios plus two Welcome to your Chemistry Nios plus two Total Questions: 18 Name Mobile No: 1. What is the pH of a 0.10 M solution of barium hydroxide, Ba (OH)2? 13.30 11.31 11.7 None of these None Hint 2. Third law of thermodynamics provides a method to evaluate which property? Absolute Energy Absolute Entropy Absolute Enthalpy Absolute Free Energy None Hint 3. 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. Positive deviation from Raoult’s Law. That the solution is unsaturated None Hint 4. 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 5. One mole of which of the following has the highest entropy? Hydrogen Gas Diamond Liquid Nitrogen Mercury None Hint 6. 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 7. H2S is more acidic than H2O because 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. Oxygen is more electronegative than Sulphur. Atomic number of Sulphur is higher than oxygen. None Hint 8. Which of the following oxides is not expected to react with sodium hydroxide? CaO Beo SiO2 B2O3 5 None Hint 9. The pH of a 10-10 M NaOH solution is nearest to 4 10 7 -10 None Hint 10. Maximum number of electrons in a subshell can be 2n2 4l – 2 4l + 2 2l + 1 4. None Hint 11. 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 6.02 × 1023 3.01 × 1023 1.2 × 1023 None Hint 12. Which of the following aqueous solutions will have highest pH? NaCl CH3COONa NH4Cl Na2CO3 None Hint 13. Which has the lowest boiling point at 1 atm pressure? 0.1 M CaCl2 0.1 M Urea 0.1 M A1Cl3 0.1 M KCl None Hint 14. Molecules are held together in a crystal by Van der Waal’s attraction Dipole-dipole attraction Electrostatic attraction Hydrogen bond None Hint 15. The orientation of atomic orbital’s depends on their Azimuthal quantum number Spin quantum number Principal quantum number 5 Magnetic quantum number None Hint 16. In the manufacture of sulphuric acid by contact process Tyndall box is used to Filter dust particles Convert SO2 and SO3 Test the presence of dust particles Remove impurities None Hint 17. Find the molecule with the maximum dipole moment CH4 NH3 CO2 NF3 5. None Hint 18. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°? Six Three Four Two 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
