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 2.01 × 102 6.02 × 1023 3.01 × 1023 None Hint 2. The orientation of atomic orbital’s depends on their Spin quantum number Principal quantum number 5 Magnetic quantum number Azimuthal quantum number None Hint 3. What is the pH of a 0.10 M solution of barium hydroxide, Ba (OH)2? 13.30 None of these 11.7 11.31 None Hint 4. In the manufacture of sulphuric acid by contact process Tyndall box is used to Filter dust particles Convert SO2 and SO3 Remove impurities Test the presence of dust particles None Hint 5. Which of the following aqueous solutions will have highest pH? NH4Cl CH3COONa NaCl Na2CO3 None Hint 6. The boiling points of hydrides of group 16 are in the order H2O > H2Te > H2S > H2Se H2O > H2Te > H2Se > H2S None of these H2O > H2S > H2Se > H2Te None Hint 7. 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 8. Which has the lowest boiling point at 1 atm pressure? 0.1 M KCl 0.1 M A1Cl3 0.1 M Urea 0.1 M CaCl2 None Hint 9. H2S is more acidic than H2O because. H — O bond dissociation energy is less also compared to H — S bond. Oxygen is more electronegative than sulphur. Atomic number of sulphur is higher than oxygen. H — S bond dissociation energy is less as compared to H — O bond. None Hint 10. Third law of thermodynamics provides a method to evaluate which property? Absolute Entropy Absolute Free Energy Absolute Enthalpy Absolute Energy None Hint 11. Maximum number of electrons in a subshell can be 2n2 2l + 1 4. 4l – 2 4l + 2 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. No deviation from Raoult’s Law. Negative deviation from Raoult’s Law. That the solution is unsaturated Positive deviation from Raoult’s Law. None Hint 13. Find the molecule with the maximum dipole moment NF3 5. NH3 CH4 CO2 None Hint 14. The pH of a 10-10 M NaOH solution is nearest to -10 7 10 4 None Hint 15. One mole of which of the following has the highest entropy? Hydrogen Gas Liquid Nitrogen Diamond Mercury None Hint 16. Molecules are held together in a crystal by Van der Waal’s attraction Electrostatic attraction Hydrogen bond Dipole-dipole attraction None Hint 17. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°? Four Three Two Six None Hint 18. Which of the following oxides is not expected to react with sodium hydroxide? SiO2 B2O3 5 CaO Beo 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
