Current Electricity Class-9 Exe-9C MCQs Concise Physics ICSE Selina Solutions Ch-9. In this article you would learn to solve MCQS on Efficient Uses of Energy. Visit official Website CISCE for detail information about ICSE Board Class-9 Physics.
Current Electricity Class-9 Exe-9C MCQs Concise Physics ICSE Selina Solutions Ch-9
| Board | ICSE |
| Class | 9 |
| Subject | Physics |
| Writer / Publication | Concise Selina Publishers |
| Chapter-9 | Current Electricity |
| Exe-9C | Efficient Uses of Energy |
| Topics | Solution of MCQs |
| Academic Session | 2025-2026 |
Efficient Uses of Energy
Current Electricity Class-9 Exe-9C MCQs Concise Physics ICSE Selina Solutions Ch-9
Page 222 (Choose the correct answer from the options given below).
Que-1: An efficient use of energy results in :
(a) increase in the emission of greenhouse gases
(b) a reduction in the cost of energy
(c) a reduction in the emission of green house gases
(d) both (b) and (c)
Ans: (d) both (b) and (c)
Hint- An efficient use of energy results in reduction of (i) the cost of energy and, (ii) the emission of greenhouse gases.
Que-2: The most non-polluting and efficient lighting device is —
(a) CFL
(b) Fluorescent light
(c) LED
(d) Electric bulb
Ans: (c) LED
Hint- The use of LED (light emitting diode) bulbs for lighting reduces the consumption of energy drastically. It is also helpful in reducing global warming and the harmful effects of mercury used in fluorescent lights.
Que-3: IEA is the short form of —
(a) Indian Energy Association
(b) Indian Eco Academy
(c) International Energy Agency
(d) International Eco Academy
Ans: (c) International Energy Agency
Hint- According to the International Energy Agency (IEA), the improved energy efficiency in buildings, industries and transportation could reduce the world’s energy need in 2050 by one-third and thus it can help to control global emission of greenhouse gases.
Que-4: LED stands for:
(a) Long lasting electric device
(b) Least efficient diode
(c) Light emitting diode
(d) Laser emission device
Ans: (c) Light emitting diode
Hint- LED stands for Light emitting diode.
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