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