Light — Science STD 8 — Question

Fill in the blanks:Electroplating of ______________ is done on objects like water taps and cycle bell to give them a shiny appearance.

Mention the five English letters that do not show lateral inversion on suffering reflection from a plane mirror.

Name two inflammable fuels.

Name three types of portable sources of electricity.

If people do not have enough iodine in their diet, will they get goitre caused by lack of thyroxine ?

Fill in the following blanks with suitable words: The change of caterpillar into an adult silk moth is called ______________.

Out of kerosene oil or wood, which has higher ignition temperature ?

The underlined words in the following sentence have been jumbled up. Write them in their correct form. Rineryfe is a place where various fractions of peroleum are separated.

Name the hormone which prepares our body for action to face emergency situation like danger, fear, anger or excitement.

Which part of a cell controls all the activities of the cell?