PES SS 2 Chemistry 1st Term Exam 2025-2026
A) C3H6 B) C7H16 C) C8H18 D) C2H6
A) alkene B) alkanol C) alkyne D) alkane
A) The physical properties are similar. B) Successive members differ in molecular formula by an addition of CH2 C) Members share the same general method of preparation. D) Members have the same general method of preparation.
A) They are generally soluble in water. B) They are generally soluble in non-polar solvents. C) They are mostly covalent. D) Most organic compounds are non-polar. 
A) C5H12 B) C3H6 C) C2H6 D) C4H9
A) It is the exceptional ability of carbon atoms to combine with one another. B) It is the ability of carbon to form single, double and tripple covalent bonds. C) It is the ease with which carbon combines with hydrogen, oxygen etc.
A) C3H7OH B) C3H7COOH C) C3H7COCH3 D) C3H7CHO
A) CO2 B) H2 C) O2 D) Cl2
A) NO2 B) CO2 C) Na2O D) SO2
A) Na2O B) MgO C) SO2 D) K2O
A) K2O B) Na2O C) CaO D) ZnO
A) CO2 B) ZnO C) MgO D) CO
A) amphoteric oxide B) neutral oxide C) basic oxide D) hydrochloric oxide E) acidic oxide
A) potassium trioxochlorate (V) B) potassium trioxocarbonate (IV) C) potassium tetraoxosulphate (VI) D) potassium trioxonitrate (V)
A) a catalyst B) a dehydrating agent C) an oxidizing agent D) a reducing agent
A) thermal decomposition of potassium trioxochlorate (V) B) fractional distillation of liquid air C) freezing of liquid air D) hydrolysis of liquid air
A) It is slightly soluble in water B) It is a colourless, odourless and tasteless gas C) Its atomic number is 8 and mass number is 16 D) It turns blue litmus paper red
A) N2 + 2O2 --> 2NO2 B) CH4 + 2O2 --> CO2 + 2H2O C) 4Na + O2 --> 2Na2O D) C + O2 --> CO2
A) Bosch Process B) Haber Process C) Steam Process D) Contact Process
A) It is slightly soluble in water B) It is colourless, odourless and tasteless C) It turns red litmus paper blue D) It is highly inflammable
A) concentration B) pressure C) volume D) temperature
A) Increasing the temperature will shift the equilibrium towards the endothermic reaction B) Decreasing the temperature will shift the equilibrium towards the endothermic reaction C) Increasing the temperature will shift the equilibrium towards the exothermic reaction D) Increasing the temperature will not affect the position of the equilibrium
A) Decreasing the pressure will shift the equilibrium towards the side with fewer moles of gas. B) Increasing the pressure will shift the equilibrium towards the side with fewer moles of gas. C) Increasing the pressure will shift the equilibrium towards the side with more moles of gas. D) Increasing the pressure will have no effect on the equilibrium of a gaseous system. 
A) Service Process B) Bosch Process C) Contact Process D) Haber Process
A) High pressure B) Iron catalyst C) Moderately low temperature D) Low pressure
A) definite shape B) can be compressed C) very dense D) definite volume
A) cannot be compressed B) no definite volume C) no definite shape D) less dense
A) least dense B) fixed mass C) no definite shape D) cannot be compressed easily
A) directly proportional to its pressure B) inversely proportional to its pressure C) directly proportional to its temperature D) inversely proportional to its temperature
A) inversely proportional to its pressure B) directly proportional to its absolute temperature C) directly proportional to its pressure D) inversely proportional to its absolute temperature
A) 442.4cm3 B) 459.2cm3 C) 432.4cm3 D) 429.2cm3
A) 388.4cm3 B) 288.4cm3 C) 488.4cm3 D) 188.4cm3
A) 27.4dm3 B) 44.8dm3 C) 36.8dm3 D) 18.2dm3
A) directly proportional to its density B) directly proportional to the square root of its density C) inversely proportional to the square root of its density D) inversely proportional to its density
A) They are both neutral to litmus paper B) They are both slightly soluble in water C) They are both colourless, odourless and tasteless gases D) They both belong to group 1 on the periodic table
A) oxygen gas B) chlorine gas C) carbon (IV) oxide gas D) hydrogen gas
A) for steel production B) in the manufacture of tetraoxosulphate (VI) acid C) as propellants for space rockets D) for medical applicants to help patients breathe
A) CH4 (g) + H2O (g) B) CO (g) + 3H2 (g) C) CH2 (g) + 2H2O (g) D) CO2 (g) + 3H2 (g) |
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