1.

Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order.A. There are many gadgets that are operated by a remote control and contain a silicon chip.B. This produces an infra-red beam, made up of electromagnetic waves.C. When a button is pressed on the remote control, the chip sets off an electronic vibration.D. The beam carries a coded signal for operating the systems.

A. ADCB
B. BACD
C. ACBD
D. ACDB
Answer» D. ACDB


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