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