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Mdcat-past-papers - UHS - Chemistry Quiz

Filters: Board: UHS | Subject: Chemistry |
101. Which one of the following molecules has sp³ hybridization?



102. Which one of the following hydrogen bonds is stronger than others?



103. The average bond energy of C–Br is:



104. Which of the following sets constitutes all the molecules and ions of non-planar geometry?



105. The bond energy of hydrogen in H₂ molecule is:



106. Reactants have high energy than products in:



107. Which of the following is a state function?



108. The rate of reaction between two specific time intervals is called:



109. How will be the rate of reaction, if the slope of the curve is greater near the start of the reaction?



110. What is the reason for energy changes in a chemical reaction?



111. In endothermic reaction, the heat content of the:



112. Liquid in the container has temperature 70°C. What will be the temperature in kelvin scale?



113. What is the unit of heat capacity?



114. In standard enthalpy of atomization, heat of surrounding:



115. ΔH will be given a negative sign in:



116. Lattice energy of an ionic crystal is the enthalpy of:



117. Heat of formation (ΔH°f) for CO₂ is:



118. 2H₂O → ΔH = +285.5 kJ/mol What will be the enthalpy change in the equation?



119. Combustion of graphite to form CO₂ can be done by two ways. Reactions are: C + O₂ → CO₂ ΔH = –284 kJ/mol C + ½O₂ → CO ΔH = –110 kJ/mol CO + ½O₂ → CO₂ ΔH = –676 kJ/mol What will be enthalpy of formation of CO?



120. Reaction of water with quick lime results in the rise of temperature of the system. Using the concept of energy change, indicate the nature of the reaction:



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