PES SS 2 Chemistry 1st Term Exam 2025-2026
A) C7H16 B) C8H18 C) C2H6 D) C3H6
A) alkanol B) alkyne C) alkene D) alkane
A) Members share the same general method of preparation. B) Successive members differ in molecular formula by an addition of CH2 C) Members have the same general method of preparation. D) The physical properties are similar.
A) Most organic compounds are non-polar. B) They are generally soluble in water. C) They are generally soluble in non-polar solvents. D) They are mostly covalent. 
A) C3H6 B) C4H9 C) C5H12 D) C2H6
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) C3H7CHO C) C3H7OH D) C3H7COOH
A) H2 B) O2 C) CO2 D) Cl2
A) CO2 B) SO2 C) NO2 D) Na2O
A) Na2O B) SO2 C) MgO D) K2O
A) Na2O B) K2O C) ZnO D) CaO
A) CO B) CO2 C) ZnO D) MgO
A) acidic oxide B) hydrochloric oxide C) neutral oxide D) basic oxide E) amphoteric oxide
A) potassium trioxocarbonate (IV) B) potassium trioxonitrate (V) C) potassium tetraoxosulphate (VI) 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) fractional distillation of liquid air D) hydrolysis of liquid air
A) It turns blue litmus paper red B) It is a colourless, odourless and tasteless gas C) It is slightly soluble in water D) Its atomic number is 8 and mass number is 16
A) N2 + 2O2 --> 2NO2 B) C + O2 --> CO2 C) CH4 + 2O2 --> CO2 + 2H2O D) 4Na + O2 --> 2Na2O
A) Steam Process B) Bosch Process C) Haber Process D) Contact Process
A) It is slightly soluble in water B) It turns red litmus paper blue C) It is colourless, odourless and tasteless D) It is highly inflammable
A) concentration B) temperature C) volume D) pressure
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) Haber Process C) Service Process D) Bosch Process
A) Moderately low temperature B) Iron catalyst C) Low pressure D) High pressure
A) definite shape B) very dense C) can be compressed D) definite volume
A) cannot be compressed B) no definite shape C) less dense D) no definite volume
A) no definite shape B) least dense C) fixed mass D) cannot be compressed easily
A) inversely proportional to its pressure B) inversely proportional to its temperature C) directly proportional to its pressure D) directly proportional to its temperature
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) 459.2cm3 C) 442.4cm3 D) 429.2cm3
A) 288.4cm3 B) 388.4cm3 C) 188.4cm3 D) 488.4cm3
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 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) chlorine gas B) carbon (IV) oxide gas C) oxygen gas D) hydrogen 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) CO2 (g) + 3H2 (g) B) CO (g) + 3H2 (g) C) CH2 (g) + 2H2O (g) D) CH4 (g) + H2O (g) |
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