Part – A: I. Select the correct option from the given choices: 1. Aquatic species are more comfortable in cold water rather than in warm water. This is due to a) solubility of oxygen is more in warm water. b) solubility of oxygen is more in cold water. c) solubility of gases increases with decrease of temperature. d) both (b) and (c).
2. Which of the following cell was used in Apollo space programme? a) Mercury cell b) Daniel cell c) H2–O2 Fuel cell d) Dry cell
3. During electrolysis of aqueous solution of NaCl, the reaction preferred at anode is a) 2H2O(l) → O2(g) + 4H+(aq) + 4e b) H2O(l) + e-→ ½ H2(g) + OH c) Cl- (aq) → ½ Cl2(g) + e d) ½ Cl2(g) + e-→ Cl-(aq)
4. Order of a reaction is determined by a) balanced chemical equation b) unbalanced chemical reaction c) experimental rate expression d) thermo-chemical equation
5.Ionic character decreases in the following oxides. a) Mn2O7> MnO2>MnO b) MnO> MnO2> Mn2O7 c) Mn2O7>MnO> MnO2 d) MnO> Mn2O7> MnO2
6. The oxidation state of Fe in [Fe(CO)5] is a) + 2 b) 0 c) + 3 d) + 5
7. The gases liberated when primary alcohols react with thionyl chloride are a) SO2 and H2 b) H2and HCl c) SO2and HCl d) NO2and H2
8. Phenol molecule is less stable than phenoxide ion because a) phenol resonance structures have charge separation but not in phenoxide ion. b) phenoxide ion resonance structures have charge separation but not in phenol. c) both Phenoxide ion and phenol resonance structures have charge separation d) both Phenoxide ion and phenol resonance structures do not have charge separation
9. Glycerol is an example for a) dihydric alcohol b) dihydric phenol c) trihydric phenol d) trihydric alcohol
10. Tollen’s reagent is a a) silver nitrate solution b) ammonical silver nitrate solution c) ammonium nitrate solution d) silver chloride solution
11. Carboxylic acids exists in dimeric form even in vapour phase due to a) Hydrogen bond b) peptide bond c) ionic bond d) metallic bond
12. The state of hybridization of orbitals of Nitrogen atom in amines is; a) sp2 b) sp3 c) sp d) dsp2
13.Benzene diazonium chloride reacts with phenol to form p-hydroxy azobenzene in a) acidic medium b) neutral medium c) basic medium d) both acidic and neutral medium
14. Thiamine is a chemical name of; a) Vitamin A b) Vitamin B1 c) Vitamin C d) Vitamin K
15. The nitrogenous base adenine form hydrogen bonding with a) Thymine b) Cytosine c) Guanine d) None of the above
II. Fill in the blanks by choosing the appropriate word from those given in the brackets: (phosgene, tin, hydrogen, molecularity, zinc, cellulose acetate)
16. Thesemi permeable membrane used in the reverse osmosis is ________________. 17. The number of molecules taking part in the elementary reaction is called _______. 18. The non-transitional metal present in brass is ___________. 19. The poisonous gas formed when chloroform is exposed to air and lightis ________. 20. Solubility of ethylamine in water is due to formation of _______bonding with water.
Similar Searches: ii puc question papers for karnataka board, ii puc question papers 2021, 2nd puc question papers, 2nd puc question papers with answers, 2nd puc question papers with answers 2021, 2nd puc question papers commerce 2021, 2nd puc question papers 2021, 2nd puc question papers with answers 2021, 2nd puc question papers accountancy, 2nd puc question papers arts, 2nd puc model question papers arts 2021, 2nd puc question papers karnataka biology, 2nd puc question papers karnataka board, 2nd puc annual exam question papers biology, 2nd puc question papers commerce, 2nd puc question papers commerce, 2nd puc question papers chemistry, 2nd puc question papers commerce, 2nd puc model question papers commerce, 2nd puc model question papers commerce, 2nd puc model question papers commerce, ii puc question papers, ii puc question bank, 2nd puc question papers download, puc question papers download, 2nd puc question papers economics karnataka, 2nd puc previous year question papers english, ii puc electronics model question papers, 2nd puc question papers for commerce
Have a question? Please feel free to reach out by leaving a comment below
