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 6.02 × 1023 3.01 × 1023 1.2 × 1023 None Hint 2. The boiling points of hydrides of group 16 are in the order H2O > H2S > H2Se > H2Te None of these H2O > H2Te > H2Se > H2S H2O > H2Te > H2S > H2Se None Hint 3. Which of the following oxides is not expected to react with sodium hydroxide? SiO2 Beo B2O3 5 CaO None Hint 4. The pH of a 10-10 M NaOH solution is nearest to 4 -10 10 7 None Hint 5. Find the molecule with the maximum dipole moment NH3 NF3 5. CH4 CO2 None Hint 6. Which has the lowest boiling point at 1 atm pressure? 0.1 M CaCl2 0.1 M A1Cl3 0.1 M Urea 0.1 M KCl None Hint 7. Molecules are held together in a crystal by Van der Waal’s attraction Hydrogen bond Electrostatic attraction Dipole-dipole attraction None Hint 8. One mole of which of the following has the highest entropy? Hydrogen Gas Diamond Mercury Liquid Nitrogen None Hint 9. Third law of thermodynamics provides a method to evaluate which property? Absolute Enthalpy Absolute Energy Absolute Free Energy Absolute Entropy None Hint 10. What is the pH of a 0.10 M solution of barium hydroxide, Ba (OH)2? None of these 11.31 13.30 11.7 None Hint 11. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°? Four Three Six Two None Hint 12. The orientation of atomic orbital’s depends on their Spin quantum number Magnetic quantum number Principal quantum number 5 Azimuthal quantum number None Hint 13. H2S is more acidic than H2O because 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. Oxygen is more electronegative than Sulphur. None Hint 14. In the manufacture of sulphuric acid by contact process Tyndall box is used to Convert SO2 and SO3 Remove impurities Test the presence of dust particles Filter dust particles None Hint 15. Which of the following aqueous solutions will have highest pH? NaCl CH3COONa NH4Cl Na2CO3 None Hint 16. 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. H — S bond dissociation energy is less as compared to H — O bond. Atomic number of sulphur is higher than oxygen. None Hint 17. Maximum number of electrons in a subshell can be 2l + 1 4. 2n2 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. Negative deviation from Raoult’s Law. That the solution is unsaturated No deviation from Raoult’s Law. 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
