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