The correct answer is: (b) ΔH > 0 Explanation: In endothermic reactions, the system absorbs heat from the surroundings. This results in a positive enthalpy change (ΔH > 0), indicating energy is gained.
Information Booster:
· Photosynthesis is a classic endothermic process.
· Such reactions cause the system to feel cold to touch.
· They require external energy input (heat or light).
· ΔH > 0 indicates net energy absorption.
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150 Mins English English10 Questions10 Marks10 Mins English English150 Questions150 Marks150 Mins EnglishThe caloric theory replaced which older theory of heat and combustion?
If the pressure of a gas is increased by two-fold at a constant volume, the work done by the gas will be _____.
Which type of wall is present in the closed system?
Food is cooked in a pressure cooker quickly because
The 3rd step of the Carnot cycle is:
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