XiMDCAT XI Complete Chemistry Grand Test#Catalytic Properties#Transition Elements46Choose the best answerThe energy diagram shows the same reaction with and without a catalyst. Which statement is correct?AThe forward reaction, with catalyst, is endothermicBThe enthalpy change of reaction is (E₂ − E₃)CE₄ is the activation energy for the reverse uncatalysed reactionDThe enthalpy change of reaction is reduced by using a catalyst Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Bond Angles#Chemical Bonding47Choose the best answerWhich molecule has the smallest bond angle?APCl₃BNCl₃CAsCl₃DSbCl₃ Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Bond Angles#Chemical Bonding48Choose the best answerAs the s-character of a hybrid orbital increases, what happens to the bond angle?ADecreasesBBecomes zeroCIncreasesDDoes not change Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Chemical Equilibrium#Effect of Pressure49Choose the best answerWhich equilibrium is favoured in the forward direction by lowering the pressure?AN₂ + 3H₂ ⇌ 2NH₃B2HI ⇌ H₂ + I₂CPCl₅ ⇌ PCl₃ + Cl₂DN₂ + O₂ ⇌ 2NO Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Boiling Point & Pressure#Liquids50Choose the best answerWhy does food take longer to cook at a high-altitude place such as Gorakh Hill without a pressure cooker?AAtmospheric pressure increasesBBoiling point of water increasesCAtmospheric pressure decreasesDTemperature of water increases Like 0 Discuss 0Share