The polarising power of Mg is close to that of –
1. Na
2. Cs
3. Li
4. K
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
The incorrect statement among the following is-
1. Alkali metals are more electropositive than alkaline earth metals.
2. Alkaline earth metals are denser and harder than alkali metals.
3. An alkali metal's electronic configuration is ns1 and an alkaline earth metal's electronic configuration is ns2
4. The first IP of alkali metals is more than that of alkaline earth metals.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Potassium is kept-
1. Under cold water.
2. In ammonia.
3. In alcohol.
4. In kerosene.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Nitrolim (a nitrogenous fertilizer) is a mixture of-
1. Calcium carbide and calcium cyanamide.
2. Calcium oxide and calcium carbide.
3. Calcium cyanamide and carbon.
4. Calcium oxide and carbon.
The strongest base among the following is-
1.
2.
3.
4.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Ca, on exposure of the moist air, forms a layer on its surface as :
1.
2.
3.
4. CaO
The incorrect statement regarding Be(II group) is -
1. It forms an ionic carbide.
2. Its carbonate decomposes on heating.
3. Its halides are covalent.
4. It is easily attacked by water.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Lithium has the minimum tendency to form ion. The aqueous solution of lithium is the:
1. Strongest reducing agent.
2. Poorest reducing agent.
3. Strongest oxidising agent.
4. Poorest oxidising agent.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Calcium hydride can be obtained by heating :
1. Calcium oxide with hydrogen.
2. Calcium oxide with hydrogen under pressure.
3. Calcium with hydrogen under pressure.
4. Calcium with hydrogen at a very low temperature.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Calcium hydroxide upon reacting with moist chlorine forms-
1.
2.
3.
4.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.