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प्रश्न
Write the names of ZnS compounds :
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उत्तर
ZnS - Zinc sulphide
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संबंधित प्रश्न
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
A liquid compound X of molecular mass 18 u can be obtained from a number of natural sources. All the animals and plants need liquid X for their survival. When an electric current is passed through 200 grams of pure liquid X under suitable conditions, then 178 grams of gas Y and 22 grams of gas Z are produced. Gas Y is produced at the positive electrode whereas gas Z is obtained at the negative electrode. Moreover, gas Y supports combustion whereas gas Z burns itself causing explosions.
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- State an important use of Y in our life.
Fill in the following blank with suitable word:
A potassium ion has positive charge because it contains less............... than.....................
Fill in the following blank with suitable word:
A sulphide ion has negative charge because it contains less ....................... than ...................
An element X has a valency of 2. Write the simplest formula for oxide of the element.
Give example.
Composite radicals
What do you understand by the following terms?
Acid radical
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State if the following element or radical is divalent?
Nickel
State if the following element or radical is divalent?
Bisulphite
