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प्रश्न
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Oxygen is a ______ in respiration.
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उत्तर
Oxygen is a reactant in respiration.
संबंधित प्रश्न
How would you show that setting of curd is a chemical change?
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
TRUE \ FALSE
Positively charged electrode is called the anode. True or false ?
State what you would observe when the following substance is heated in a glass test tube red lead.
Name: Gas with rotten egg smell.
Give reason for the following:
Electrolytic decomposition of water is a reaction involving change of state.
Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the reaction.
What happens when cane sugar is strongly heated? Mention any two changes in it.
The chemical name of baking soda is sodium bicarbonate.
