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प्रश्न
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
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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
Correct the following statement:
CO and Co both represents cobalt.
Define: Compounds
What is meant by H20 and 3H2O
Fill in the blank
A diatomic gaseous element is _______.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
State five different characteristics of compounds.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
Higher-Order Thinking questions:
Why is hydrogen considered an element?
