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Subject :NSO    Class : Class 7

Fill in the blanks by choosing an appropriate option. When an electric current is passed through a bulb, the __(i)__ gets so heated that it glows. The element of electric heater is made up of __(ii)__. Wires used in electric fuses break when large electric current is passed through them due to __(iii)__ effect of electric current.

--------(i)--------------(ii)---------(iii)
AElement---Tungsten---Heating
BElement---Chromium---Magnetic
CFilament---Tungsten---Magnetic
DFilament---Chromium---Heating


Ans 1:

Class : Class 7
all options are wrong correct answer is filaments --tungsten--heating

Ans 2:

Class : Class 8
answer is not in the options'

Ans 3:

Class : Class 7
d

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