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Everyday Science MCQs
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2481.Barcode reader is a device ____?
2482.Which disease is caused by deficiency of Iron?
2483.If a machine performs 20 J of work in 10 sec. then it power is ______?
2484.Light travels in a ______?
2485.Ozone Layer restricts which one of the following?
2486.The unit of amount of substance in SI system is _____?
2487.Omnivores that eat only _____?
2488.In modern periodic table, how many periods are there?
2489.A reaction in which heat energy is absorbed or taken into the system is called __________?
2490.When blue litmus paper dipped acids, its colour change to ____?