Chemistry Nios plus two Welcome to your Chemistry Nios plus two Total Questions: 18 Name Mobile No: 1. Which of the following oxides is not expected to react with sodium hydroxide? SiO2 CaO B2O3 5 Beo None Hint 2. Find the molecule with the maximum dipole moment CH4 NH3 CO2 NF3 5. None Hint 3. 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 4. H2S is more acidic than H2O because Oxygen is more electronegative than Sulphur. Atomic number of Sulphur is higher than oxygen. 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 5. One mole of which of the following has the highest entropy? Liquid Nitrogen Mercury Hydrogen Gas Diamond None Hint 6. The pH of a 10-10 M NaOH solution is nearest to 10 4 7 -10 None Hint 7. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°? Six Two Four Three None Hint 8. 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. Positive deviation from Raoult’s Law. That the solution is unsaturated Negative deviation from Raoult’s Law. None Hint 9. Molecules are held together in a crystal by Dipole-dipole attraction Electrostatic attraction Hydrogen bond Van der Waal’s attraction 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 3.01 × 1023 2.01 × 102 1.2 × 1023 6.02 × 1023 None Hint 11. Third law of thermodynamics provides a method to evaluate which property? Absolute Enthalpy Absolute Free Energy Absolute Energy Absolute Entropy None Hint 12. The boiling points of hydrides of group 16 are in the order H2O > H2S > H2Se > H2Te None of these H2O > H2Te > H2S > H2Se H2O > H2Te > H2Se > H2S None Hint 13. 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 14. The orientation of atomic orbital’s depends on their Spin quantum number Magnetic quantum number Principal quantum number 5 Azimuthal quantum number None Hint 15. Which of the following aqueous solutions will have highest pH? CH3COONa NH4Cl Na2CO3 NaCl None Hint 16. 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 17. Which has the lowest boiling point at 1 atm pressure? 0.1 M CaCl2 0.1 M Urea 0.1 M KCl 0.1 M A1Cl3 None Hint 18. Maximum number of electrons in a subshell can be 4l – 2 2n2 4l + 2 2l + 1 4. 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
