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प्रश्न
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.
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उत्तर
False. Metals react with dilute acids to produce hydrogen gas that burns with a 'pop' sound.
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संबंधित प्रश्न
A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green
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Iron is
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(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
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What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
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Describe the reaction of potassium with water. Write the equation of the reaction involved.
What is the action of water on sodium ? Write equation of the chemical reaction involved.
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
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Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
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