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