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This week's questions

What is the need for watering a newly constructed wall?

Manoj bonam, Rajahmundry, Andhra Pradesh

Unlike LCD TVs , why do CRT TVs show different colours on their screen when a magnet is kept near them?

A. Saravanan, Chennai

How does an overdose of sleeping tablets cause death?

K. Ragunathan, Coimbatore, Tamil Nadu

Why does the human body not feel an electric shock at low voltages such as 12 volts?

S. Yuvaraj, Coimbatore, Tamil Nadu

Readers can send questions/answers on science and technology for the Question Corner along with their names and address to the following email id:

questioncorner@thehindu.co.in or to The Editor, The Hindu (Science and Technology),

859-860, Anna Salai, Chennai 600 002.

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