- Only II
- Only I
- Both I and III
- Both I and II
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Option 2 : Only I
- Acid turns blue litmus paper red.
- Phenolphthalein turns colorless in acidic solutions.
- Methyl Orange turns red in acidic solutions.
| Indicators |
Colour Changes |
| Blue Litmus Paper |
Turns red |
| Phenolphthalein |
Remains colorless |
| Methyl Orange |
From orange to red |
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The following sentences form a paragraph.They are numbered as P, Q, R and S. These four parts are not given in their proper order. Read the sentences and choose the alternative that arranges them in correct order.
P. It uses radio frequency identification (RFID) technology to make cashless payments through a prepaid account linked to it.
Q. The tag, which is valid for five years, comes in seven different colours — violet, orange, yellow, green, pink, blue, black. Each colour is assigned to a particular category of vehicles.
R. A FASTag is a reloadable tag that automatically deducts toll charges and allows a vehicle to pass through a toll gate without stopping for the payment.
S. The tag is fixed to the windscreen of a vehicle and an RFID antenna in the canopy of the toll gate scans the QR code and the tag identification number, following which the boom barrier lifts to allow a vehicle to pass through.?
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