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

Edit

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

Edit

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

Edit

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

Edit

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.

Edit

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

Edit