1. Where did the first hydro-electric power plant come in India?
[A]Madhya Pradesh
[B]Darjeeling
[C]Sikkim
[D]Karnataka
2. In fireworks the green flame is produced because of _____________.
[A]Potassium
[B]Mercury
[C]Barium
[D]Sodium
3. Production of Chlorofluorocarbon(CFC) gas is used in which of the following domestic products?
[A]Refrigerators
[B]TV
[C]Tube light
[D]Cooking gas
4. Permanent hardness of water can be removed by ______________________.
[A]Potassium permanganate
[B]Washing soda
[C]Chlorine
[D]Bleaching powder
5. Which scientist is known as the founder of India's first pharmaceutical company,'Bengal Chemicals & Pharmaceuticals'?
[A]Prafulla Chandra Ray
[B]Arvind Bhatnagar
[C]Srikumar Banerjee
[D]Shivram Bhoje
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