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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
विकल्प
Oxygen
Diamond
Zinc
Graphite
Gold
उत्तर
Gold
APPEARS IN
संबंधित प्रश्न
Give one example for the following type of mixtures
solid-solid homogenous mixture.
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 |
Give two examples of the following.
Non-metals which are solids
Name: Three different forms of carbon
Give reason: Graphite is used to make a lead of the pencils.
Indicate whether the following statement is true or false:
All elements are artificially prepared
Complete the statement – an element is a pure substance made up of ____________ atoms.
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
