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