রসায়ন • IUT • ইসলামিক ইউনিভার্সিটি অব টেকনোলজি ভর্তি পরীক্ষা ২০২১-২০২২
রসায়ন প্রশ্ন
Which a statement about exothermic and endothermic reactions is correct?
- ক
In an endothermic reactions, energy is used to break bonds but no energy is released when bonds form.
- খ
In an endothermic reactions, energy is released when bound from but more energy is used to break bonds.
- গ
In an exothermic reactions, energy is released both by breaking and by forming bonds.
- ঘ
In an exothermic reactions, energy is released when bonds form but no energy is needed to break bonds.
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