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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
पर्याय
metals
non-metals
metalloids
noble gases
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उत्तर
non-metals
APPEARS IN
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 |
State the number of atoms of H2SO4
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Give the name of the radical - OH
Give three differences between elements & compounds with relevant examples.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Reason out
Elements are called semimetals.
