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The carbon filament is invented by
The resources which can be used continuously, yr-after -yr are called
When lime juice is dropped on baking soda, brisk effervescence takes place as the gas evolved is
Which of the following is required for the rusting of iron?
Chewing gum is made from
If A is a matrix of order 3*5 and B is a matrix of order 5*3,then the order of AB and BA will be
One fathom is equal to how many meters ?
The cause of periodicity of properties is
The richest source of vitamin D is?
When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its Noise?
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