NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS

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Analyzing +4 | -1

Consider the following statements
(a) Density of sodium is more than potassium.
(b) Potassium carbonate is manufactured by Solvay process
(c)

LiN{O_3}

evolves

N{O_2}

gas on heating but

NaN{O_3}

does not
The correct statement(s) is/are

View answer and explanation

Correct option: C

(a) and (c) only

Option C ((a) and (c) only) is correct because sodium is denser than potassium, and lithium nitrate decomposes to produce nitrogen dioxide, while sodium nitrate does not.

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Which of the following exists in polymeric form? If 5 moles of

\mathrm{BaCl}_{2}

is mixed with 2 moles of

\mathrm{Na}_{3} \mathrm{PO}_{4}

, the maximum number of moles of

\mathrm{Ba}_{3}\left(\mathrm{PO}_{4}\right)_{2}

formed is ________ (Nearest integer) Alkali metal superoxides are obtained by the reaction of Pearl ash and caustic potash are chemically: When sodium chloride solution is electrolysed, the gas that is liberated at the cathode is What is product of reaction :

\underset {\text{(dilute)}}{Ba(OH)_2}+H_2O_2+ClO_2 \longrightarrow