Advertisements
Advertisements
प्रश्न
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
Advertisements
उत्तर
Magnesium and manganese are two metals that liberate hydrogen gas from very dilute nitric acid.
APPEARS IN
संबंधित प्रश्न
Why is sodium kept immersed in kerosene oil?
Food cans are coated with tin and not with zinc because ______.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.
In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
Write equation for the reaction of magnesium with oxygen.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
How do non-metals react with hydrogen? Explain with an example.
Why does aluminium not react with water under ordinary conditions?
What is the action of water on aluminium ? Write equation of the chemical reaction involved.
Name another metal oxide which behaves like aluminium oxide.
Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?
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.
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
What is the characteristic of the electronic configuration of noble gases?
Write the name and formula of a molecule made up of three atoms of oxygen.
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
