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