Advertisements
Advertisements
प्रश्न
Name the metal which has been placed at the top of the reactivity series.
Advertisements
उत्तर
Potassium (K)
APPEARS IN
संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Why is sodium kept immersed in kerosene oil?
Write the chemical reaction when iron reacts with dilute H2SO4.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be ______.
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.
Name two metals which form amphoteric oxides.
How would you show that silver is chemically less reactive than copper?
Name two metals which cannot displace hydrogen from dilute acids.
Describe the reaction of potassium with water. Write the equation of the reaction involved.
Name another metal oxide which behaves like aluminium oxide.
Write the equation for the reaction of:
Iron with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
The elements whose oxides can turn phenolphthalein solution pink are ______.
One of the following is not a neutral oxide. This is:
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be ______.
A metal less reactive and another metal more reactive than hydrogen are ______.
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
