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प्रश्न
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
विकल्प
True
False
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उत्तर
False
Correct Statement: the compound is made up of two or more elements is a fixed proportion by mass.
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संबंधित प्रश्न
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Name: a Metal Which is a Poor Conductor of Electricity.
State the number of atoms of CaCO3
Name: Two substances used to make jewellery.
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Select the correct answer from the choice given below.
A group of atoms of elements
Select the correct answer from A, B, C, D & E for the statement given below :
A noble gas.
Give an example for the elements derived from their Latin names.
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Give two example of elements.
