S-Block Elements Group 1 and 2-Preparation and Properties [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry]: Questions 1 - 7 of 33

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Question 1

Question MCQ▾

In the following reaction, , What is A?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 2

Question MCQ▾

Which of the following sodium compound will give phosphine gas when reacted with yellow phosphorus?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 3

Question MCQ▾

Magnesium chloride exists as MgCl2 . 6H2 O, but sodium chloride exists as . Why?

Choices

Choice (4)Response

a.

Because of + 2 oxidation state.

b.

hydration energies of alkaline earth metals are higher

c.

alkaline earth metals are more electropositive

d.

lower hydration energies of alkaline earth metals

Edit

Question 4

Question MCQ▾

Write down the increasing order of melting points of alkali metals?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 5

Question MCQ▾

What will the product when dry ammonia is passed over sodium at 4000 C in absence of air?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 6

Question MCQ▾

Which of the following is true about sodium?

Choices

Choice (4)Response

a.

NaOH solution does not react with chlorine.

b.

NaOH is primary standard in volumetric analysis

c.

Manganous hydroxide is soluble in excess of NaOH solution.

d.

NaOH is used in concentration of bauxite ore

Edit

Question 7

Question MCQ▾

Which of the following salts does not form any precipitate with excess of NaOH?

Choices

Choice (4)Response

a.

F e C l 3

b.

c.

d.

Edit