PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. Which of the following are pure substances?
Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.
Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.
Pure substances are
Impure substances are
2. Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Oxygen is an , It contains the atoms of of the same kind.
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