Fill in the blanks with appropriate words.
Like synthetic fibres ,plastic is also a……………….

Fill in the blanks with appropriate words. Synthetic fibres are also called ………………or…………. Fibres.

Fill in the blanks with appropriate words. Synthetic fibres are synthesised from raw material called ……………….. ..

What are synthetic fibres?

Fill in the blanks: -87-:1 = -

Fill in the blanks: _-:48 = -1

Fill in the blanks. Friction produces ………………

Fill in the blanks: -87-: __= 87

Fill in the blanks with suitable words. The unit of frequency is ……………... .

Fill in the blanks with suitable words. Shrillness of sound is determined by the ……………………of viberation .

Fill up the blanks with the words given: We get sugar from _____.