1) SCIENCE : We can call Covid-19 vaccine as a_________ a) Artificial Passive Immunity b) Artificial Active Immunity c) Natural Passive Immunity d) Natural Active Immunity 2) TECHNOLOGY : What type of glass used to prevent UV(ultraviolet ray)? a) Anti-UV glass b) Fibre glass c) Photochromic glass d) Fused Silica glass 3) ENGINEERING : What is used to make cables? a) Silicon b) Plastic c) Superconductors d) Optical fibre 4) MATHEMATICS : There is 90 chickens in the farm. 30 of them must get hormones by 1st July. Meanwhile, the next 30 chickens need to take the hormones the next two weeks. When will the next 30 chicken get the hormones if the last 30 chickens have got the hormones on the last two weeks?  a) 14th July b) 28th July c) 20th July d) 22nd July

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