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प्रश्न
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
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उत्तर
Bases – are chemicals which are hydroxide (or oxides) of metals eg. sodium hydroxide.
संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
Name: Three different forms of carbon
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Indicate whether the following statement is true or false:
All elements are artificially prepared
State four differences between – elements, compounds and mixtures with suitable examples.
Select the correct answer to the statement given below:
A metalloid
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Name the two elements which are derived from the country.
