Changes Around Us QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Changes Around Us Multiple choice objective type questions and answers will help you in many competitive written examinations and inteview 2024 like SSC exams :
1.The reactions in which heat is absorbed are called ………………. reactions |
| Endothermic |
| Exothermic |
| Isothermic |
| Isochronous |
2.The reactions in which heat is liberated are called …………… reactions |
| Endothermic |
| Exothermic |
| Adiabatic |
| Isothermic |
3.Which of the following is a non-periodical change? |
| Oscillation of pendulum |
| Phases of moon |
| Occurrence of day and night |
| Earthquake |
4.Changes that are useful are called …………….. changes |
| Undesirable |
| Desirable |
| Periodic |
| Irreversible |
5.In some changes, the substance can be brought back to its original state. Such changes are called …………… changes |
| Periodic |
| Non-periodic |
| Undesirable |
| Reversible |
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