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