Advertisements
Advertisements
प्रश्न
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Advertisements
उत्तर
A radical is an atom or group of an atom of the same or different elements that behave in the manner of positive or negative ions.
(a) NO3 – nitrate
(b) OH – hydroxide
(c) SO4 – sulphate
(d) CO3 – carbonate
संबंधित प्रश्न
Fill in the blank
A pure substance has definite.................. and constant ..............
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 |
Define: Compounds
Find the atomicity of the Following molecule:
Carbon Monoxide
Select the correct answer to the statement given below:
A metalloid
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Give three differences between elements & compounds with relevant examples.
______ is a mixture of gases.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
