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 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. |
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 |
Question 4
Question MCQ▾
Write down the increasing order of melting points of alkali metals?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
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. |
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 |
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. |