S-Block Elements Group 1 and 2 [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry]: Questions 40 - 45 of 131
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Question 40
Question MCQ▾
Which of the following process is used for preparation of Pearl ash?
Choices
Choice (4) | Response | |
---|---|---|
a. | Electrolytic process | |
b. | Nelson process | |
c. | Le-Blancs process | |
d. | Lowig՚s process |
Question 41
Question MCQ▾
How many electrons will be there in penultimate shell of potassium?
Choices
Choice (4) | Response | |
---|---|---|
a. | 6 electrons | |
b. | 1 electron | |
c. | 8 electrons | |
d. | 3 electrons |
Question 42
Question MCQ▾
The substance not likely to contain CaCO3?
Choices
Choice (4) | Response | |
---|---|---|
a. | Marble statue | |
b. | Seashell | |
c. | Dolomite | |
d. | Calcined gypsum |
Question 43
Question MCQ▾
A substance which gives a brick red flame and breaks down on heating giving oxygen and a brown gas is?
Choices
Choice (4) | Response | |
---|---|---|
a. | Magnesium carbonate | |
b. | Magnesium nitrite | |
c. | Calcium carbonate | |
d. | Calcium nitrite |
Question 44
Question MCQ▾
Identify the correct statement?
Choices
Choice (4) | Response | |
---|---|---|
a. | Gypsum is not a natural product. It is obtained by heating of plaster of Paris. | |
b. | The percentage of calcium is lower in gypsum in comparison to plaster of Paris. | |
c. | Plaster of Paris is formed by oxidation of gypsum. | |
d. | Plaster of Paris is obtained by hydration of gypsum. |
Question 45
Question MCQ▾
The second ionization enthalpies of alkali metals are higher than corresponding alkaline earth metals, why?
Choices
Choice (4) | Response | |
---|---|---|
a. | because of increase in atomic size | |
b. | electrons are loosely held towards nucleus | |
c. | one can՚t predict the exact reason | |
d. | electrons are tightly held towards nucleus |