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