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