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