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